HALLWOOD ENERGY PARTNERS LP
POS AM, 1998-02-11
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1
 
   
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 11, 1998
    
 
                                                      REGISTRATION NO. 333-38973
================================================================================
                    U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ---------------------
   
                                 POST-EFFECTIVE
    
   
                                AMENDMENT NO. 1
    
                                       TO
 
                                    FORM S-3
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                             ---------------------
                         HALLWOOD ENERGY PARTNERS, L.P.
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<C>                                 <C>                                 <C>
             DELAWARE                              1311                             84-0987088
 (State or other jurisdiction of           (Primary Industrial                   (I.R.S. Employer
  incorporation or organization)       Classification Code Number)             Identification No.)
                                                                     CATHLEEN M. OSBORN
          HALLWOOD ENERGY PARTNERS, L.P.                               GENERAL COUNSEL
   4582 SOUTH ULSTER STREET PARKWAY, SUITE 1700                HALLWOOD ENERGY PARTNERS, L.P.
              DENVER, COLORADO 80237                    4582 SOUTH ULSTER STREET PARKWAY, SUITE 1700
                  (303) 850-7373                                   DENVER, COLORADO 80237
(Address, including zip code, and telephone number,                    (303) 850-7373
   including area code, of registrant's principal     (Name, address, including zip code, and telephone
executive offices and principal executive offices)   number, including area code, of agent for service)
</TABLE>
 
                             ---------------------
 
                                   Copies to:
 
<TABLE>
<C>                                                  <C>
                  W. ALAN KAILER                                        JAY H. HEBERT
  JENKENS & GILCHRIST, A PROFESSIONAL CORPORATION                  VINSON & ELKINS L.L.P.
           1445 ROSS AVENUE, SUITE 3200                         2001 ROSS AVENUE, SUITE 3700
                DALLAS, TEXAS 75202                                  DALLAS, TEXAS 75201
</TABLE>
 
                             ---------------------
 
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement.
                             ---------------------
 
     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  [ ]
 
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, please check the following box.  [ ]
 
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering.  [ ]
- ------------------
 
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
- ------------------
 
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [X]
                             ---------------------
 
                        CALCULATION OF REGISTRATION FEE
 
   
<TABLE>
<CAPTION>
==============================================================================================================================
       TITLE OF EACH CLASS OF            AMOUNT TO BE          PROPOSED MAXIMUM         PROPOSED MAXIMUM         AMOUNT OF
    SECURITIES TO BE REGISTERED         REGISTERED(1)     OFFERING PRICE PER UNIT(2)    OFFERING PRICE(2)    REGISTRATION FEE
- ------------------------------------------------------------------------------------------------------------------------------
<S>                                  <C>                  <C>                        <C>                     <C>
Class C Units of Limited Partner
  Interests.........................   2,070,000 Units              $10.00                 $20,700,000         $6,106.50(3)
==============================================================================================================================
</TABLE>
    
 
(1) Includes Class C units that may be purchased by the Underwriters to cover
    over-allotments, if any.
 
(2) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457.
 
   
(3) Fee previously paid.
    
 
     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THIS REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO
SECTION 8(a), MAY DETERMINE.
================================================================================
<PAGE>   2
 
   
                 SUBJECT TO COMPLETION, DATED FEBRUARY 11, 1998
    
 
PROSPECTUS
   
                            1,800,000 CLASS C UNITS
    
                          OF LIMITED PARTNER INTEREST
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
   
     The 1,800,000 Class C Units ("Class C Units") of limited partner interest
in Hallwood Energy Partners, L.P., a Delaware limited partnership (the
"Partnership"), offered hereby are being sold by the Partnership. The Class C
Units are traded on the American Stock Exchange under the symbol "HEPC." The
last reported sale price of the Class C Units on the American Stock Exchange on
January 30, 1998 was $11.00 per Class C Unit.
    
 
                             ---------------------
 
      SEE "RISK FACTORS" BEGINNING ON PAGE 14 FOR A DISCUSSION OF CERTAIN
FACTORS THAT SHOULD BE CONSIDERED BY PROSPECTIVE INVESTORS.
 
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
 
   
<TABLE>
<CAPTION>
============================================================================================================
                                                      PRICE TO          UNDERWRITING         PROCEEDS TO
                                                       PUBLIC            DISCOUNT(1)       PARTNERSHIP(2)
- ------------------------------------------------------------------------------------------------------------
<S>                                              <C>                 <C>                 <C>
Per Class C Unit................................       $10.00               $.70                $9.30
- ------------------------------------------------------------------------------------------------------------
Total(3)........................................     $18,000,000         $1,260,000          $16,740,000
============================================================================================================
</TABLE>
    
 
(1) The Partnership, the Operating Partnerships (as defined herein) and the
    General Partner (as defined herein) have agreed to indemnify the
    Underwriters against certain liabilities under the Securities Act of 1933
    (the "Securities Act"). See "Underwriting."
 
(2) Before deducting expenses payable by the Partnership estimated to be
    $425,000.
 
   
(3) The Partnership has granted the Underwriters a 30-day option to purchase up
    to an aggregate of 270,000 additional Class C Units solely to cover
    over-allotments, if any, at the Price to Public, less Underwriting Discount.
    If the Underwriters exercise this option in full, the total Price to Public,
    Underwriting Discount and Proceeds to Partnership will be $20,700,000,
    $1,449,000 and $19,251,000, respectively. See "Underwriting."
    
 
   
     The Class C Units are offered by the several Underwriters subject to prior
sale when, as and if delivered to and accepted by the Underwriters and subject
to their right to reject orders in whole or in part. It is expected that
certificates representing such Class C Units will be made available for delivery
at the offices of EVEREN Securities, Inc. in           on or about February 17,
1998.
    
 
EVEREN SECURITIES, INC.
 
                               WHEAT FIRST UNION
 
                                                   LADENBURG THALMANN & CO. INC.
 
   
                               FEBRUARY 11, 1998
    
<PAGE>   3
 
 [MAP SHOWING THE OUTLINES OF THE PARTNERSHIP'S CORE PRODUCING PROPERTIES: THE
GREATER PERMIAN REGION OF TEXAS AND SOUTHEAST NEW MEXICO, THE GULF COAST REGION
             OF LOUISIANA AND TEXAS, AND THE ROCKY MOUNTAIN REGION]
 
     CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN, OR OTHERWISE AFFECT THE PRICE OF THE CLASS C UNITS,
INCLUDING OVER-ALLOTMENT, STABILIZING TRANSACTIONS, SYNDICATE SHORT COVERING
TRANSACTIONS AND PENALTY BIDS. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE
"UNDERWRITING."
<PAGE>   4
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
PROSPECTUS SUMMARY....................    1
  Hallwood Energy Partners, L.P. .....    1
  The Offering........................    5
  Distribution Policy.................    5
  Risk Factors........................    5
  Summary Historical Consolidated
     Financial Data...................    6
  Summary Oil and Gas Operating
     Data.............................    8
  Summary Oil and Gas Reserve Data....    9
  Summary of Material Tax
     Considerations...................   10
STRUCTURE OF THE PARTNERSHIP..........   13
RISK FACTORS..........................   14
  Risks Inherent in the Partnership's
     Business.........................   14
  Risks Inherent in an Investment in
     the Partnership..................   18
  Conflicts of Interest and Fiduciary
     Responsibilities.................   21
  Tax Risks...........................   23
PRICE RANGE OF CLASS C UNITS AND
  DISTRIBUTIONS.......................   26
USE OF PROCEEDS.......................   26
CAPITALIZATION........................   27
CASH DISTRIBUTION POLICY..............   27
SELECTED HISTORICAL CONSOLIDATED
  FINANCIAL DATA......................   28
MANAGEMENT'S DISCUSSION AND ANALYSIS
  OF FINANCIAL CONDITION AND RESULTS
  OF OPERATIONS.......................   31
  General.............................   31
  Results of Operations...............   31
  Nine Months Ended September 30, 1997
     Compared to Nine Months Ended
     September 30, 1996...............   31
  1996 Compared to 1995...............   33
  1995 Compared to 1994...............   34
  Liquidity and Capital Resources.....   35
  Issues Related to the Year 2000.....   39
  Environmental Considerations........   40
BUSINESS AND PROPERTIES...............   40
  Overview............................   40
</TABLE>
 
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
  Business Strategy...................   42
  Organization........................   43
  Reserves and Production by
     Significant Regions and Fields...   43
  Volumes, Sales Prices and Oil and
     Gas Production Expense...........   50
  Development, Exploration and
     Acquisition Capital
     Expenditures.....................   50
  Productive Oil and Gas Wells........   50
  Oil and Gas Acreage.................   51
  Drilling Activity...................   51
  Marketing...........................   51
  Investment in Hallwood Consolidated
     Resources Corporation............   52
  Competition.........................   53
  Regulation..........................   53
  Operating Hazards and Insurance.....   56
  Title to Properties.................   56
  Employees...........................   56
  Legal Proceedings...................   57
MANAGEMENT............................   57
  General.............................   57
  Directors, Officers and Key
     Employees........................   57
EXECUTIVE COMPENSATION................   60
  General.............................   60
  Compensation of Executive
     Officers.........................   60
  Option Grants and Exercises in Last
     Fiscal Year......................   61
  Long-Term Incentive Plan............   62
  Director Compensation...............   63
  Compensation Committee Interlocks
     and Insider Participation........   63
CERTAIN RELATIONSHIPS AND RELATED
  TRANSACTIONS........................   64
CONFLICTS OF INTEREST AND FIDUCIARY
  RESPONSIBILITIES....................   65
  General.............................   65
  Acquisition of Additional Properties
     and Conduct of Exploratory and
     Development Drilling.............   66
  Fiduciary and Other Duties..........   67
PRINCIPAL UNITHOLDERS.................   68
DESCRIPTION OF CLASS C UNITS..........   69
</TABLE>
 
                                        i
<PAGE>   5
 
   
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
  General.............................   69
  Transfer of Class C Units...........   69
  Status as a Limited Partner
     or Assignee......................   69
  Duties and Status of Transfer
     Agent............................   70
DESCRIPTION OF THE PARTNERSHIP
  AGREEMENTS..........................   70
  Organization and Duration...........   70
  Management..........................   71
  Allocation of Profits and
     Losses -- The Partnership........   72
  Allocation of Profits and Losses --
     HEPO.............................   73
  Allocation of Profits and Losses --
     EDPO.............................   73
  Allocation of Income Tax Items......   74
  Distributions.......................   74
  Additional Classes or Series of
     Units; Sales of Other
     Securities.......................   74
  Amendment of Partnership Agreement
     and Operating Partnership
     Agreements.......................   75
  Meetings; Voting....................   76
  Indemnification.....................   77
  Limited Liability...................   77
  Books and Reports...................   78
  Termination, Dissolution and
     Liquidation......................   79
UNITS ELIGIBLE FOR FUTURE SALE........   79
MATERIAL FEDERAL INCOME TAX
  CONSIDERATIONS......................   80
  Opinion of Counsel..................   80
  Tax Shelter not a Significant or
     Intended Benefit of Investment in
     the Partnership..................   80
  Tax Classification of the
     Partnership......................   81
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
  Tax Consequences of the Offering....   82
  General Features of Partnership
     Taxation.........................   82
  Tax Consequences of the
     Partnership's Operations.........   91
  Sale of Units.......................   97
  Uniformity of Units.................  100
  Other Tax Consequences..............  100
  Administrative Matters..............  103
INVESTMENT IN THE PARTNERSHIP BY
  EMPLOYEE BENEFIT PLANS..............  105
UNDERWRITING..........................  106
LEGAL MATTERS.........................  107
EXPERTS...............................  108
AVAILABLE INFORMATION.................  108
DOCUMENTS INCORPORATED BY REFERENCE...  108
GLOSSARY OF CERTAIN TERMS.............  110
INDEX TO FINANCIAL STATEMENTS AND
  SUPPLEMENTARY DATA..................  F-1
</TABLE>
    
 
                                       ii
<PAGE>   6
 
                               PROSPECTUS SUMMARY
 
     The following summary is qualified in its entirety by the more detailed
information and financial and operating data appearing elsewhere in this
Prospectus. As used in this Prospectus, unless the context otherwise requires,
the "Partnership" or "HEP" refers to Hallwood Energy Partners, L.P. and its
predecessors, together with its subsidiaries. Unless otherwise indicated, all
information in this Prospectus assumes that the over-allotment option granted to
the Underwriters by the Partnership is not exercised. For ease of reference, a
Glossary of certain terms used in this Prospectus is included under "Glossary of
Certain Terms."
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
OVERVIEW
 
     Hallwood Energy Partners, L.P. explores for, develops, acquires and
produces oil and gas in the continental United States. The Partnership owns a
diversified portfolio of core producing properties located primarily in the
Greater Permian Region of Texas and Southeast New Mexico, the Gulf Coast Region
of Louisiana and Texas, and the Rocky Mountain Region. During 1996, the
Partnership's total production was 18.6 Bcfe, which consisted of 69% natural gas
and 31% crude oil. At December 31, 1996, the Partnership's estimated proved
reserves were 133.7 Bcfe, approximately two-thirds of which was natural gas,
with a standardized measure of discounted future net cash flows of $206 million.
The Partnership also holds a 46% interest in Hallwood Consolidated Resources
Corporation ("HCRC"), a publicly traded (NMS:HCRC) exploration and production
corporation. As of January 30, 1998, the Partnership's investment in HCRC had a
market value of $24.0 million.
 
     HEP is organized as a limited partnership to achieve more tax efficient
pass through of cash flow to its partners. The Partnership utilizes operating
cash flow, first, to reinvest in operations to maintain its reserve base and
production; second, to make stable cash distributions to Unitholders; and third,
to grow the Partnership's reserve base over time. HEP has three classes of Units
outstanding, designated Classes A, B and C. Class C Units, the class of Units
being offered by this Prospectus, represent preferred limited partner interests
and are traded on the American Stock Exchange (AMEX:HEPC). Class C Unitholders
are paid a preferred distribution of $1.00 per Class C Unit per year before
distributions are paid to other limited partners and are entitled to
preferential distributions upon liquidation of the Partnership. It is the
Partnership's intention to maintain the Class C Unit distributions at $1.00 per
Class C Unit per year to the extent consistent with maintaining its reserve base
and production. At $11.00, the closing market price of the Class C Units on the
American Stock Exchange on January 30, 1998, the Class C Units had an indicated
pre-tax yield of 9.1%. Class A and Class B Units are entitled to distributions
in the amount declared from time to time by the General Partner. During 1997,
Class A Unitholders received distributions of $0.52 and Class B Unitholders
received no distributions. All three classes of Units vote as separate classes
on all matters submitted to Unitholders.
 
     The Partnership has no employees. Management, technical and operational
services are provided by Hallwood Petroleum, Inc. ("HPI"), a subsidiary of the
Partnership. At December 31, 1996, HPI operated on behalf of the Partnership
over 1,000 wells, accounting for approximately 89% of the Partnership's proved
reserves. Management and employees of HPI have extensive experience and
expertise in operational, financial and managerial aspects of the oil and gas
industry. HPI's strengths include conducting cost-efficient operations;
geological and geophysical interpretation and prospect generation; use of
sophisticated land, legal, accounting and tax systems; use of risk management
tools, including price hedges, interest rate swaps and joint ventures; and
experience in making complex acquisitions on favorable terms. In addition,
financial incentive programs reward key operating and field personnel for
minimizing capital costs, operating costs, general and administrative expenses
and well downtime. In 1996, as a result of management's emphasis on cost
control, combined lease operating and general and administrative costs were $.86
per Mcfe produced, with realized gross operating margins of $1.73 per Mcfe.
 
     Over the last three years the Partnership has undertaken approximately 400
development and exploration wells, recompletions and workover projects and
completed numerous acquisitions. As a result of these
                                        1
<PAGE>   7
 
activities, including revisions, the Partnership has replaced 145%, 132% and
116% of its production, at an average cost of $.49, $.71, and $.64 per Mcfe for
1996, 1995, and 1994, respectively. From January 1, 1996 through December 31,
1997, the Partnership had an approximate 56% success rate on its drilling,
workovers and recompletions. For purposes of this determination the Partnership
has classified a well as successful if production casing has been run for a
completion attempt on the well.
 
     The evaluation of the Partnership's activities during 1997 and its reserves
at December 31, 1997 has not been completed. However, management currently
estimates that at December 31, 1997, the standardized measure of discounted
future net cash flows of the Partnership's reserves was approximately $129.4
million and that, for 1997 the Partnership's reserve replacement from all
activities, including revisions, equaled 63% of its 1997 production, using
December 31, 1997 prices of $16.90 per barrel of oil and $2.30 per mcf of gas.
The expected future production from certain of the Partnership's wells in West
Texas is more sensitive to fluctuations in oil prices. If December 31, 1997
prices had been equal to the weighted average prices the Partnership has
received for the five years ended December 31, 1997, or $18.44 per barrel of oil
and $1.87 per mcf of gas, management estimates that the Partnership's reserve
replacement from all activities, including revisions, would have equaled 128% of
its 1997 production.
 
     The Partnership's future growth will be driven by a combination of
development of existing projects, exploration for new reserves and select
acquisitions. The proceeds of the Offering will be utilized by the Partnership
in 1998 to accelerate the drilling of a portion of its current project inventory
which includes an estimated 67 development well and workover locations, 54 wells
and workovers that may be undertaken depending on the results of future
evaluations and 50 exploration locations which, if successful, could lead to
additional opportunities.
 
BUSINESS STRATEGY
 
     The Partnership's objective is to provide an attractive return to
Unitholders through a combination of cash distributions and capital
appreciation. The following are key strategic elements utilized to achieve that
objective.
 
     ACCELERATION OF DEVELOPMENT OF EXISTING PROPERTY BASE.The Partnership
intends to use all of the proceeds from the Offering to accelerate development
and production from its existing inventory of drilling locations. The
Partnership believes its existing development and workover projects offer
meaningful reserve addition opportunities and provide a base for generating
future cash flow, even without exploration or acquisition successes.
 
     EXPLORATION FOR NEW RESERVES. The Partnership is placing increasing
emphasis on exploration as a source of future growth and has an active
exploration program targeting a wide variety of reserve creation opportunities
in its core areas of operations and in select new areas. The Partnership pursues
a balanced portfolio of exploration prospects where it believes multiple
additional new reserve opportunities could result if a significant discovery
were made. At December 31, 1997, the Partnership had approximately 284,000 gross
(77,000 net) undeveloped acres on which it was actively conducting exploration
activities.
 
     UTILIZATION OF RISK MANAGEMENT TECHNIQUES. The Partnership uses a variety
of techniques to reduce its exposure to the risks involved in its oil and gas
activities. The Partnership conducts operations in distinct geographic areas to
gain diversification benefits from geologic settings, local commodity price
differences and local operating characteristics. The Partnership seeks to reduce
risks normally associated with exploration through the use of advanced
technologies, such as 3-D seismic surveys, by spreading projects over various
geologic settings and geographic areas, by balancing exposure to crude oil and
natural gas projects, by balancing potential rewards against evaluated risks and
by participating in projects with other experienced industry partners at working
interest levels appropriate for the Partnership. The Partnership seeks to reduce
its exposure to short-term fluctuations in the price of oil and natural gas and
interest rates by entering into various hedging arrangements.
 
     MAINTAIN LOW-COST OPERATING STRUCTURE. One of the Partnership's strengths
is its ability to implement and maintain a low-cost operating structure, through
its affiliate HPI. As operator, HPI manages all field
 
                                        2
<PAGE>   8
 
activities and thereby exercises greater control over the cost and timing of
exploration, drilling and development activities in order to help improve
project returns. The Partnership focuses on reducing lease operating expenses
(on a per unit of production basis), general and administrative expenses and
drilling and recompletion costs in order to improve project returns.
 
     ACQUISITION OF SELECT PROPERTIES. The Partnership actively seeks to acquire
oil and gas properties that are either complementary to existing production
operations or that it believes will provide significant exploration
opportunities beyond any proved reserves acquired. The Partnership has assembled
an experienced management team which employs a comprehensive interdisciplinary
approach encompassing technical, financial, legal and strategic considerations
in evaluating potential acquisitions of oil and gas properties. The
Partnership's average reserve acquisition cost was $.76 per Mcfe for the three
years ended December 31, 1996.
 
     UTILIZE STRENGTHS OF PERSONNEL. The Partnership utilizes qualified and
experienced lease operators, field supervisors, engineers, landmen, accountants
and other personnel assigned to specific core areas of operation. Virtually all
of the staff have over 10 years experience in their fields, and most have been
employed by the Partnership's subsidiary, HPI, for more than 10 years. All
personnel have access to and use modern information systems, operating
technologies and equipment to help maximize production and reliability of the
Partnership's operations while minimizing costs.
 
                                        3
<PAGE>   9
 
CURRENT OPERATIONS
 
     The table set forth below indicates the Partnership's project inventory at
December 31, 1997. The Partnership expects to pursue the majority of the Planned
Development Wells and Workovers and Planned Exploration Wells in 1998. The
Partnership's drilling plans are subject to change and it continually
reevaluates and upgrades its prospects throughout the year as new opportunities
are generated. Drilling plans are also subject to change based on rig
availability, title or land arrangements, and changes in expected economics
based on new data; therefore, some of the planned and contingent wells shown
below will not be drilled in 1998 and may not be drilled at all.
 
<TABLE>
<CAPTION>
                                                                     PROJECT INVENTORY(1)
                                                       ------------------------------------------------
                                                         PLANNED
                                                       DEVELOPMENT   WELLS AND WORKOVERS      PLANNED
                                                        WELLS AND      CONTINGENT UPON      EXPLORATION
                    PROJECT NAME                        WORKOVERS    FUTURE EVALUATION(2)      WELLS
                    ------------                       -----------   --------------------   -----------
<S>                                                    <C>           <C>                    <C>
GREATER PERMIAN REGION
  Carlsbad/Catclaw...................................       3                  4                --
  Cross Roads/Oasis..................................      --                 --                 3
  East Keystone......................................       2                  3                --
  Garden City........................................       2                 --
  Griffin............................................      --                  4                 5
  Merkle.............................................      --                 --                25
  Spraberry..........................................      20                 14                --
GULF COAST REGION
  Bison..............................................      --                 --                 1
  Boca Chica.........................................      --                 --                 1
  Giddings...........................................       1                  2                --
  Paul Field.........................................       1                 --                --
ROCKY MOUNTAIN REGION
  Bear Gulch.........................................      --                 --                 1
  Douglas Arch.......................................       3                 13                --
  Hudson Ranch.......................................      --                 --                 8
  San Juan...........................................       1                 11                --
  Toole County.......................................      19                  3                --
  West Sioux Pass....................................      --                 --                 1
OTHER
  Kansas.............................................      15                 --                --
  Sacramento.........................................      --                 --                 5
                                                           --                 --                --
TOTAL................................................      67                 54                50
</TABLE>
 
- ---------------
 
(1) All well counts reflect gross wells. The total net wells are 23 Planned
    Development Wells and Workovers, 24 Wells and Workovers Contingent upon
    Future Evaluation, and eight Planned Exploration Wells.
 
(2) These projects are sensitive to factors that cannot be determined with
    certainty at this time. These factors include, depending on the project: the
    effect of drilling or completion techniques or other factors on projected
    production rates; the cost of personnel and equipment; the availability of
    drilling equipment in the area; obtaining necessary permits and licenses for
    the project; the price of oil and gas; the projected lease operating
    expenses; the availability of gas gathering facilities to the project and
    the success of prior waterflood pilots in the area. As a result of these
    uncertainties, whether the Partnership will undertake these projects and
    whether they will be successful are less certain than for planned wells.
 
     Although the Partnership is currently pursuing each planned or contingent
well as set out in the preceding table, there can be no assurance that these
wells will be drilled at all or within the expected time frame. The final
determination with respect to the drilling of any well will depend upon a number
of factors, including (i) the results of exploration efforts and the
acquisition, review and analysis of seismic and other data, (ii) the
availability of sufficient capital resources to the Partnership and the other
participants for the drilling of the prospects, (iii) the approval of the
prospects by other participants after additional data has been compiled, (iv)
economic and industry conditions at the time of drilling, including prevailing
and anticipated prices for oil and gas and the availability of drilling rigs and
crews, (v) the financial resources and results of operations of the Partnership,
and (vi) obtaining necessary permitting for the prospects. There can be no
assurance that any of the planned or contingent wells identified on the
preceding table will encounter reservoirs of commercially productive oil or gas.
See "Risk Factors -- Risks Inherent in the Partnership's Business -- Replacement
Risk and Expansions of Reserves" and "-- Uncertainty of Reserve Information and
Future Net Revenue Estimates."
                                        4
<PAGE>   10
 
                                  THE OFFERING
 
   
<TABLE>
<S>                                              <C>
Class C Units offered by the Partnership.......  1,800,000 Class C Units(1)
Class C Units to be outstanding after the        2,464,063 Class C Units(1)
  Offering.....................................
Use of proceeds................................  The Partnership intends to use the net proceeds from
                                                 the Offering to accelerate the drilling of its
                                                 project inventory and, in the interim, to repay a
                                                 portion of its outstanding indebtedness under one of
                                                 its credit facilities. See "Use of Proceeds."
American Stock Exchange symbol.................  HEPC
</TABLE>
    
 
- ---------------
 
   
(1) Excludes 270,000 Class C Units issuable upon exercise of the Underwriters'
    over-allotment option. As of January 30, 1998 there were 9,977,254 Class A
    Units, 143,773 Class B Units and 664,063 Class C Units outstanding.
    
 
                              DISTRIBUTION POLICY
 
     The Partnership's policy is to maintain stable cash distributions to its
limited partners to the extent consistent with its primary objective of
maintaining its reserve base and production. Class C Unitholders are paid a
preferred distribution of $1.00 per Class C Unit per year before distributions
are paid to other limited partners. At $11.00, the closing market price of the
Class C Units on the American Stock Exchange on January 30, 1998, the Class C
Units had an indicated pre-tax yield of 9.1%. The Partnership anticipates that
taxable income allocable to Class C Units generally will be equal to
distributions to the persons who purchase the Class C Units in this Offering,
although there is no assurance this will always be the case. Since March 1996,
the Partnership has distributed $0.25 per Class C Unit per quarter or $1.00 per
Class C Unit on an annualized basis. Since March 1996, the Partnership has also
distributed $0.13 per Class A Unit per quarter or $0.52 per Class A Unit on an
annualized basis.
 
                                  RISK FACTORS
 
     Limited partner interests are inherently different from capital stock of a
corporation, although many of the business risks to which the Partnership will
be subject are similar to those that would be faced by a corporation engaged in
a similar business. An investment in the Class C Units offered hereby will
involve substantial risks, including risks associated with the nature of the
interests in the Partnership, certain potential conflicts of interest, risks
inherent in the Partnership's business and tax risks. Prospective purchasers of
the Class C Units should carefully consider the risk factors described beginning
on page 14 in evaluating an investment in the Partnership.
 
                                        5
<PAGE>   11
 
                 SUMMARY HISTORICAL CONSOLIDATED FINANCIAL DATA
 
     The summary of historical consolidated financial information of the
Partnership for the five years ended December 31, 1996 has been derived from the
Partnership's audited Consolidated Financial Statements and the notes thereto
contained elsewhere in this Prospectus. The data presented for the nine months
ended September 30, 1997 and September 30, 1996 has been derived from the
Partnership's unaudited Consolidated Financial Statements and the notes thereto
contained elsewhere in this Prospectus. The summary historical financial
information is qualified in its entirety and should be read in conjunction with
"Capitalization," "Selected Historical Consolidated Financial Data,"
"Management's Discussion and Analysis of Financial Condition and Results of
Operations," and the audited and unaudited Consolidated Financial Statements of
the Partnership and the related notes thereto included elsewhere in this
Prospectus.
 
<TABLE>
<CAPTION>
                                                 NINE MONTHS
                                                    ENDED
                                                SEPTEMBER 30,                    YEAR ENDED DECEMBER 31,
                                             -------------------   ----------------------------------------------------
                                               1997       1996       1996       1995       1994       1993       1992
                                             --------   --------   --------   --------   --------   --------   --------
<S>                                          <C>        <C>        <C>        <C>        <C>        <C>        <C>
INCOME STATEMENT DATA:
Revenues:
  Oil and gas operations...................  $ 32,302   $ 37,961   $ 50,644   $ 43,454   $ 43,899   $ 44,106   $ 52,822
  Gas marketing and transportation(1)......                                                            5,046      7,556
  Interest.................................       328        331        422        326        583        461        352
                                             --------   --------   --------   --------   --------   --------   --------
                                               32,630     38,292     51,066     43,780     44,482     49,613     60,730
                                             --------   --------   --------   --------   --------   --------   --------
Expenses:
  Oil and gas operations...................     8,767      8,930     12,237     12,092     12,907     11,689     14,107
  Gas marketing and transportation.........                                                            4,611      7,900
  General and administrative...............     3,250      3,133      4,540      5,580      5,630      6,812      7,732
  Depreciation, depletion and
    amortization...........................     8,657     10,554     13,500     15,827     18,168     17,076     18,866
  Impairment of oil and gas properties.....                                     10,943      7,345
  Litigation settlement expense
    (revenue)..............................      (240)       230        230        386      3,370     (9,768)       245
                                             --------   --------   --------   --------   --------   --------   --------
                                               20,434     22,847     30,507     44,828     47,420     30,420     48,850
                                             --------   --------   --------   --------   --------   --------   --------
        Operating income (loss)............    12,196     15,445     20,559     (1,048)    (2,938)    19,193     11,880
                                             --------   --------   --------   --------   --------   --------   --------
Interest and other income (expense)........    (2,315)    (3,047)    (3,878)    (4,245)    (3,834)    (4,692)    (6,512)
Equity in earnings (loss) of HCRC..........     1,384      1,227      1,768     (2,273)    (1,499)       112        732
Minority interest in net income of
  affiliates...............................    (1,341)    (2,092)    (2,723)    (1,465)    (1,822)    (1,549)    (2,487)
                                             --------   --------   --------   --------   --------   --------   --------
                                               (2,272)    (3,912)    (4,833)    (7,983)    (7,155)    (6,129)    (8,267)
                                             --------   --------   --------   --------   --------   --------   --------
  Net income (loss)........................  $  9,924   $ 11,533   $ 15,726   $ (9,031)  $(10,093)  $ 13,064   $  3,613
                                             ========   ========   ========   ========   ========   ========   ========
CASH FLOW DATA:
  Net cash provided by operating
    activities.............................  $ 18,278   $ 22,748   $ 26,423   $ 18,449   $ 21,575   $ 29,312   $ 29,693
  Net cash used in investing activities....  $(11,563)  $ (9,450)  $(12,485)  $(10,737)  $(11,061)  $ (2,870)  $   (795)
  Net cash used in financing activities....  $(10,486)  $(10,776)  $(13,375)  $ (5,144)  $(21,244)  $(27,031)  $(20,693)
OTHER FINANCIAL DATA:
  Operating cash flow (2)..................  $ 18,918   $ 22,543   $ 30,269   $ 20,766   $ 19,588   $ 32,871   $ 25,260
  Capital expenditures(3)..................  $ 11,572   $  9,505   $ 13,299   $ 17,768   $ 13,885   $ 15,386   $ 15,079
  Distributions per Class C Unit...........  $   0.75   $   0.75   $   1.00
  Ratio of Earnings to Fixed Charges and
    Class C Distributions..................      4.05       3.90       4.08         (4)        (4)      4.08       1.49
BALANCE SHEET DATA:
  Total Assets.............................  $124,650   $121,093   $122,792   $125,152   $136,281   $171,624   $186,087
  Long-term debt...........................  $ 31,986   $ 31,398   $ 29,461   $ 37,557   $ 25,898   $ 38,010   $ 52,814
  Partners' capital........................  $ 68,441   $ 62,016   $ 64,215   $ 57,572   $ 78,803   $ 98,576   $ 89,779
</TABLE>
 
                                        6
<PAGE>   12
 
- ---------------
 
(1) The Partnership sold its gas marketing and transportation operations during
    1993.
 
(2) Operating cash flow represents cash flows from operating activities prior to
    changes in assets and liabilities. Management of the Partnership believes
    that operating cash flow may provide additional information about the
    Partnership's ability to meet its future requirements for debt service,
    capital expenditures and working capital. Operating cash flow is a financial
    measure commonly used in the oil and gas industry and should not be
    considered in isolation or as a substitute for net income, operating income,
    cash flows from operating activities or any other measure of financial
    performance presented in accordance with generally accepted accounting
    principles or as a measure of a company's profitability or liquidity.
    Because operating cash flow excludes changes in assets and liabilities and
    these measures may vary among companies, the operating cash flow data
    presented above may not be comparable to similarly titled measures of other
    companies or partnerships.
 
(3) Consists of costs incurred by the Partnership in connection with property
    acquisition, exploration and development. See Note 2 to the Partnership's
    December 31, 1996 Consolidated Financial Statements included elsewhere in
    this Prospectus. The costs for each of the years ended December 31, include
    the Partnership's share of the capital expenditures for such periods of its
    proportionately consolidated affiliates. The costs for the nine-month
    periods ended September 30, 1997 and 1996 do not include the pro rata
    expenditures of the Partnership's proportionately consolidated affiliates.
    See Note 1 to the Partnership's December 31, 1996 Consolidated Financial
    Statements included elsewhere in this Prospectus.
 
(4) The Partnership had a loss in these years. Interest expense was $3,956,000
    in 1995 and $3,445,000 in 1994.
                                        7
<PAGE>   13
 
                       SUMMARY OIL AND GAS OPERATING DATA
 
     The following table sets forth summary historical production data at the
dates and for the periods indicated.
 
<TABLE>
<CAPTION>
                                                                AS AND FOR THE
                                                               NINE MONTHS ENDED      AS AND FOR THE YEARS ENDED
                                                               SEPTEMBER 30,(1)             DECEMBER 31,(1)
                                                              -------------------    -----------------------------
                                                               1997        1996       1996       1995       1994
                                                              -------     -------    -------    -------    -------
<S>                                                           <C>         <C>        <C>        <C>        <C>
PRODUCTION VOLUMES:
  Oil (Mbbls)...............................................      581         749        972        993        939
  Natural gas (Mmcf)........................................    8,588       9,790     12,786     13,035     13,208
  Total (Mmcfe).............................................   12,074      14,284     18,618     18,993     18,842
WEIGHTED AVERAGE SALES PRICES(2):
  Oil (per Bbl).............................................  $ 19.20     $ 19.49    $ 20.10    $ 17.36    $ 16.47
  Natural gas (per Mcf).....................................  $  2.22     $  2.18    $  2.24    $  1.82    $  1.97
AVERAGE COST (PER MCFE):
  Production costs(3).......................................  $  0.68     $  0.59    $  0.62    $  0.60    $  0.65
  Depreciation, depletion and amortization(4)...............  $  0.72     $  0.74    $  0.73    $  0.83    $  0.96
  General and administrative................................  $  0.27     $  0.22    $  0.24    $  0.29    $  0.30
</TABLE>
 
- ---------------
 
(1) Excludes pro rata production attributable to the Partnership's 46% equity
    interest in HCRC. See "Business and Properties -- Investment in Hallwood
    Consolidated Resources Corporation."
 
(2) Includes the effects of hedging.
 
(3) Includes production taxes.
 
(4) Excludes impairment of oil and gas properties.
                                        8
<PAGE>   14
 
                        SUMMARY OIL AND GAS RESERVE DATA
 
     The following table sets forth summary reserve data at the dates and for
the periods indicated with respect to the Partnership's estimated historical
proved oil and gas reserves and the estimated future net cash flows attributable
thereto. The reserves have been estimated by HPI's in-house engineers.
Approximately 75% of these reserves have been reviewed by Williamson Petroleum
Consultants, Inc., independent petroleum engineers. Estimates of net proved
reserves and future net revenues from which standardized measure of discounted
future net cash flows is derived are based on year-end prices for oil and gas
held constant (except to the extent a contract provides otherwise) in accordance
with the rules and regulations of the Securities and Exchange Commission ("SEC")
and, except as otherwise indicated, give no effect to federal or state income
taxes otherwise attributable to estimated future net revenues from the sale of
oil and gas. The prices of oil and gas at December 31, 1996, were substantially
higher than the prices used in the previous years to estimate net proved
reserves and future net revenues and substantially higher than average oil and
gas prices received for 1997. In addition, there are numerous uncertainties
inherent in estimating quantities of proved reserves and in projecting future
rates of production and timing of development expenditures, including many
factors beyond the control of the Partnership. See "Risk Factors -- Risks
Inherent in the Partnership's Business -- Uncertainty of Reserve Information and
Future Net Revenue Estimates" and "Business and Properties -- Oil and Gas
Reserves."
 
<TABLE>
<CAPTION>
                                                               FOR YEARS ENDED DECEMBER 31,(1)
                                                              ---------------------------------
                                                                1996        1995        1994
                                                              ---------   ---------   ---------
                                                                   (DOLLARS IN THOUSANDS)
<S>                                                           <C>         <C>         <C>
NET PROVED RESERVES:
  Oil (Mbbls)...............................................      7,531       8,098       6,738
  Natural gas (Mmcf)........................................     88,542      83,112      85,585
  Total (Mmcfe).............................................    133,728     131,700     126,013
NET PROVED DEVELOPED RESERVES:
  Oil (Mbbls)...............................................      7,056       7,444       6,166
  Natural gas (Mmcf)........................................     85,848      77,378      79,699
  Total (Mmcfe).............................................    128,184     122,042     116,695
ESTIMATED FUTURE NET CASH FLOWS(2)..........................   $334,000    $187,000    $153,000
STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH
  FLOWS(2)(3)...............................................   $206,000    $124,000    $104,000
</TABLE>
 
- ---------------
 
(1) Excludes pro rata proved reserves attributable to the Partnership's 46%
    equity interest in HCRC. See "Business and Properties -- Investment in
    Hallwood Consolidated Resources Corporation."
 
(2) The weighted average sales prices used as of December 31, 1996 were $24.18
    per Bbl of oil and $3.76 per Mcf of natural gas (which give effect to
    hedging). The weighted average sales prices used as of December 31, 1995
    were $17.95 per Bbl of oil and $2.03 per Mcf of natural gas; and as of
    December 31, 1994 the weighted average sales prices used were $15.80 per Bbl
    of oil and $1.72 per Mcf of natural gas.
 
(3) The standardized measure of discounted future net cash flows prepared by the
    Partnership represents the present value (using an annual discount rate of
    10%) of estimated future net revenues from the production of proved
    reserves. No effect is given to income taxes as the Partnership is not a
    taxpayer.
 
                                        9
<PAGE>   15
 
                     SUMMARY OF MATERIAL TAX CONSIDERATIONS
 
     The tax consequences of an investment in the Partnership to a particular
investor will depend in part on the investor's own tax circumstances. Each
prospective investor should consult his own tax advisor about the federal, state
and local tax consequences of an investment in Class C Units.
 
     The following is a brief summary of the opinion of Jenkens & Gilchrist, a
Professional Corporation, counsel to the General Partner and the Partnership
("Counsel") of the material tax considerations of owning and disposing of Class
C Units contained in "Material Federal Income Tax Considerations -- Opinion of
Counsel." This summary is qualified as described in that discussion,
particularly the qualifications on the opinions of Counsel described therein.
 
PARTNERSHIP STATUS
 
     In the opinion of Counsel, the Partnership will be classified for federal
income tax purposes as a partnership and will not be taxed as a corporation
under the publicly traded partnership rules of Section 7704 of the Code, and the
beneficial owners of Class C Units generally will be considered partners in the
Partnership. Accordingly, the Partnership will pay no federal income taxes, and
a Class C Unitholder will be required to report in his federal income tax return
his allocable share of the Partnership's income, gains, losses and deductions.
In general, cash distributions to a Class C Unitholder will be taxable only if,
and to the extent that, they exceed the Unitholder's tax basis in his Class C
Units.
 
PARTNERSHIP ALLOCATIONS
 
     In general, annual income and loss of the Partnership will be allocated 1%
to the General Partner and 99% to the Unitholders for each taxable year. Such
income will be allocated among the Unitholders first to the Class C Unitholders
to the extent of their prior allocable shares of Partnership losses and
deductions, next to the Class C Unitholders to the extent of their aggregate
preference amount whether or not actually distributed, and then to the Class A
and B Unitholders in accordance with their percentage interests. Income or loss
is determined annually and prorated on a monthly basis and apportioned among the
General Partner and the Unitholders of record as of the opening of the first
business day of the month to which it relates, even though Unitholders may
dispose of their Units during the month in question. A Class C Unitholder will
be required to take into account, in determining his federal income tax
liability, his share of income generated by the Partnership for each taxable
year of the Partnership ending within or with the Unitholder's taxable year
whether or not cash distributions are made to a taxpayer. As a consequence, a
Unitholder's share of taxable income of the Partnership (and possibly the income
tax payable by a taxpayer with respect to such income) may exceed the cash, if
any, actually distributed to such Unitholder.
 
BASIS OF CLASS C UNITS
 
     A Class C Unitholder's initial tax basis in his Class C Unit purchased in
the Offering will be the amount paid for the Class C Unit plus his share of
Partnership nonrecourse liabilities, if any. A Unitholder's basis is generally
increased by his share of Partnership income and any increase in his allocable
share of Partnership nonrecourse liabilities (if any) and decreased by the
amount of any distributions from the Partnership to him and further decreased by
his allocable share of Partnership losses and distributions and any decrease in
his share of Partnership nonrecourse liabilities (if any).
 
LIMITATIONS ON DEDUCTIBILITY OF PARTNERSHIP LOSSES
 
     In the case of Unitholders subject to the passive loss rules (generally,
individuals and closely-held corporations), any Partnership losses will only be
available to offset future income generated by the Partnership and cannot be
used to offset income from other activities, including passive activities or
investments. Any losses unused by virtue of the passive loss rules may be
deducted when the Unitholder disposes of all of his Units in a fully taxable
transaction with an unrelated party. In addition, a Unitholder may deduct his
share of Partnership losses only to the extent that losses do not exceed his tax
basis in his Units or,
                                       10
<PAGE>   16
 
in the case of taxpayers subject to the "at risk" rules (such as individuals),
the amount the Unitholder is at risk with respect to the Partnership's
activities, if less than such tax basis.
 
SECTION 754 ELECTION
 
     The Partnership has made the election provided for by Section 754 of the
Code, which generally permits a Unitholder to calculate income and deductions by
reference to the portion of his purchase price attributable to each asset of the
Partnership.
 
DISPOSITION OF CLASS C UNITS
 
     A Unitholder who sells Class C Units will recognize gain or loss equal to
the difference between the amount realized (including his share of Partnership
nonrecourse liabilities, if any) and his adjusted tax basis in such Class C
Units. Thus, prior Partnership distributions in excess of cumulative net taxable
income in respect of a Class C Unit that decrease a Unitholder's tax basis in
such Class C Unit will, in effect, become taxable income if the Class C Unit is
sold at its original cost. A portion of the amount realized from the sale of the
Class C Units (whether or not representing gain) may be taxable as ordinary
income.
 
OTHER TAX CONSIDERATIONS
 
     In addition to federal income taxes, Unitholders may be subject to other
taxes, such as state and local income taxes, unincorporated business taxes, and
estate, inheritance or intangible taxes that are imposed by the various
jurisdictions in which a Unitholder resides or in which the Partnership does
business or owns property. Although an analysis of those various taxes is not
presented here, each prospective Unitholder should consider their potential
impact on his investment in the Partnership. The Partnership owns property and
conducts business in states that impose a personal income tax. In certain
states, tax losses may not produce a tax benefit in the year incurred (if, for
example, the Partnership has no income from sources within that state) and also
may not be available to offset income in subsequent taxable years. Some of the
states may require the Partnership, or the Partnership may elect, to withhold a
percentage of income from amounts to be distributed to a Unitholder who is not a
resident of the state. Withholding, the amount of which may be more or less than
a particular Unitholder's income tax liability to the state, may not relieve the
nonresident Unitholder from the obligation to file an income tax return. Amounts
withheld may be treated as if distributed to Unitholders for purposes of
determining the amounts distributed by the Partnership. Based on current law and
its estimate of future Partnership operations, the Partnership anticipates that
any amounts required to be withheld will not be material.
 
     It is the responsibility of each prospective Unitholder to investigate the
legal and tax consequences, under the laws of pertinent states and localities,
of his investment in the Partnership. Accordingly, each prospective Unitholder
should consult, and must depend upon, his own tax counsel or other advisor with
regard to those matters. Further, it is the responsibility of each Unitholder to
file all federal, state and local tax returns that may be required of such
Unitholder. Counsel has not rendered an opinion on the state or local tax
consequences of an investment in the Partnership.
 
OWNERSHIP OF CLASS C UNITS BY TAX-EXEMPT ORGANIZATIONS AND CERTAIN OTHER
INVESTORS
 
     An investment in Class C Units by tax-exempt organizations (including
individual retirement accounts and other retirement plans), regulated investment
companies and foreign persons raises issues unique to such persons. Virtually
all of the Partnership income allocated to a Unitholder that is a tax-exempt
organization will be unrelated business taxable income, and thus will be taxable
to such Unitholder; no significant amount of the Partnership's gross income will
be qualifying income for purposes of determining whether a Unitholder will
qualify as a regulated investment company. Nonresident aliens, foreign
corporations or other foreign persons are not permitted to hold Class C Units.
See "Material Federal Income Tax Considerations -- Other Tax
Consequences -- Investment by Tax-Exempt Entities."
                                       11
<PAGE>   17
 
TAX SHELTER REGISTRATION
 
     The Internal Revenue Code of 1986, as amended (the "Code"), generally
requires that "tax shelters" be registered with the Secretary of the Treasury.
The Partnership is registered as a tax shelter with the IRS. ISSUANCE OF THE
REGISTRATION NUMBER DOES NOT INDICATE THAT AN INVESTMENT IN THE PARTNERSHIP OR
THE CLAIMED TAX BENEFITS HAVE BEEN REVIEWED, EXAMINED OR APPROVED BY THE IRS.
See "Material Federal Income Tax Considerations -- Administrative Matters -- Tax
Shelter Registration."
                                       12
<PAGE>   18
 
                          STRUCTURE OF THE PARTNERSHIP
 
     The following diagram illustrates the relationships among Hallwood Energy
Partners, L.P. and certain of its affiliates and the ownership of Class C Units
upon completion of this Offering.
 
                    [HALLWOOD PARTNERSHIP STRUCTURE GRAPHIC]
 
                                       13
<PAGE>   19
 
                                  RISK FACTORS
 
     Prospective investors should carefully consider the following risk factors,
in addition to the other information contained in this Prospectus, in evaluating
an investment in the Class C Units offered hereby. This Prospectus contains
certain forward-looking statements. Actual results may vary materially from
those projected in the forward-looking statements as a result of any number of
factors, including the risk factors set forth below.
 
RISKS INHERENT IN THE PARTNERSHIP'S BUSINESS
 
  Volatility of Oil and Gas Prices
 
     The Partnership's revenues, profitability, future growth and ability to
borrow funds or obtain additional capital, as well as the carrying value of its
properties, are substantially dependent upon prevailing prices of oil and gas.
Historically, the markets for oil and gas have been volatile, and such markets
are likely to continue to be volatile in the future. Prices for oil and gas are
subject to wide fluctuation in response to relatively minor changes in the
supply of and demand for oil and gas, market uncertainty and a variety of
additional factors that are beyond the Partnership's control. These factors
include the level of consumer product demand, weather conditions, domestic and
foreign governmental regulations, the price and availability of alternative
fuels, political conditions in the Middle East, the foreign supply of oil and
gas, the price of foreign imports and overall economic conditions. During 1996,
the high and low prices for oil on the New York Mercantile Exchange ("NYMEX")
were $26.57 per Bbl and $17.45 per Bbl, respectively, and the high and low
prices for natural gas on the NYMEX were $4.57 per Mmbtu and $1.76 per Mmbtu,
respectively. As of January 30, 1998 the price for oil on the NYMEX was $17.21
per Bbl and the price for natural gas on the NYMEX was $2.26 per Mmbtu. It is
impossible to predict future oil and gas price movements with certainty.
Declines in oil and gas prices may materially adversely affect the Partnership's
financial condition, liquidity, ability to finance planned capital expenditures
and results of operations. Lower oil and gas prices also may reduce the amount
of oil and gas that the Partnership can produce economically. See
"-- Uncertainty of Reserve Information and Future Net Revenue Estimates" and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."
 
     The Partnership periodically reviews the carrying value of its oil and gas
properties under the full cost accounting rules of the SEC. Under these rules,
capitalized costs of proved oil and gas properties may not exceed the
standardized measure of discounted future net cash flows from proved reserves.
Application of this "ceiling" test generally requires pricing future revenue at
the unescalated prices in effect as of the end of each fiscal quarter and
requires a write down for accounting purposes if the ceiling is exceeded, even
if prices declined for only a short period of time. The Partnership may be
required to write down the carrying value of its oil and gas properties when oil
and natural gas prices are depressed or unusually volatile. If a write down is
required, it would result in a charge to earnings but would not impact cash flow
from operating activities. As a result of the application of this "ceiling"
test, the Partnership had write downs of approximately $10.9 million and $7.4
million in 1995 and 1994, respectively.
 
  Risks of Hedging
 
     In order to reduce its exposure to short-term fluctuations in the prices of
oil and gas, the Partnership periodically enters into hedging arrangements. The
Partnership's hedging arrangements apply to only a portion of its production and
provide only partial price protection against declines in oil and gas prices.
Such hedging arrangements may expose the Partnership to risk of financial loss
in certain circumstances, including instances where production is less than
expected or where the counterparty to any hedging arrangement fails to perform.
In addition, the Partnership's hedging arrangements limit the benefit to the
Partnership of increases in the prices of oil or gas. Total quantities of oil
and gas subject to hedging arrangements during the years ended December 31,
1996, 1995 and 1994 were 300,000 Bbl, 380,000 Bbl and 361,000 Bbl of oil and
5,479 Mmcf, 6,439 Mmcf and 6,461 Mmcf of gas, respectively. The Partnership's
standardized measure of discounted future net cash flows has been decreased by
$20 million at December 31, 1996, due to the effects of hedging contracts. The
Partnership revenues were increased (decreased) by ($2.5 million), $3.5 million
and
 
                                       14
<PAGE>   20
 
$1.8 million for the years ended December 31, 1996, 1995 and 1994, respectively,
because of such hedging arrangements. See "Management's Discussion and Analysis
of Financial Condition and Results of Operations -- Changing Prices and
Hedging."
 
     Similarly, in order to reduce its exposure to short-term fluctuations in
interest rates and to provide a measure of predictability for a portion of the
Partnership's interest payments under its debt facilities, the Partnership has
entered into contracts to hedge its interest payments on $15 million of its debt
for each of 1997 and 1998 and $10 million for each of 1999 and 2000. Such hedges
apply to only a portion of the Partnership's debt and provide only partial
protection against increases in interest rates. Such hedging arrangements may
expose the Partnership to risk of financial loss in certain circumstances,
including instances where the counterparty to any hedging arrangement fails to
perform. In addition, the Partnership's hedging arrangements limit the benefit
to the Partnership of declines in interest rates. See "Management's Discussion
and Analysis of Financial Condition and Results of Operations -- Financing."
 
  Significant Capital Requirements
 
     Due to its active development, exploration and acquisition programs, the
Partnership has experienced and expects to continue to experience substantial
working capital needs. While the Partnership believes that the net proceeds from
the Offering, cash flow from operations and availability under its existing
credit arrangements should allow the Partnership to successfully implement its
present business strategy, additional financing may be required in the future to
fund the Partnership's growth and developmental and exploratory drilling. No
assurances can be given as to the availability or terms of any such additional
financing that may be required or that financing will continue to be available
under the existing or new credit facilities. In the event sufficient capital
resources are not available to the Partnership, its drilling and other
activities may be curtailed. See "Management's Discussion and Analysis of
Financial Condition and Results of Operation -- Liquidity and Capital
Resources."
 
  Ability to Manage Growth and Achieve Business Strategy
 
     The Partnership's capital expenditures for oil and gas activities are
expected to be $15.5 million for 1997 and were $13.3 million for 1996, $17.8
million for 1995 and $13.9 million for 1994. The Partnership has not yet
determined its capital expenditure budget for 1998, but management anticipates
that the budget will be approximately the same as 1997. If the Offering is
successfully completed, management anticipates that the Partnership's capital
budget for 1998 will increase by approximately $10 million. The increased budget
may strain the Partnership's technical, operational and administrative
resources. As the Partnership enlarges the number of projects it is evaluating
or in which it is participating, there will be additional demands on the
Partnership's financial, technical, operational and administrative resources.
The Partnership's ability to grow will depend upon a number of factors,
including its ability to identify and acquire new exploratory sites, its ability
to develop existing sites, its ability to continue to retain and attract skilled
personnel, the results of its drilling program, oil and gas prices, access to
capital and other factors. There can be no assurance that the Partnership will
be successful in achieving growth or any other aspect of its business strategy.
 
  Uncertainty of Reserve Information and Future Net Revenue Estimates
 
     There are numerous uncertainties inherent in estimating oil and gas
reserves and their estimated values, including many factors beyond the
Partnership's control. The reserve data set forth in this Prospectus represents
only estimates. Although the Partnership believes the reserve estimates
contained in this Prospectus are reasonable, reserve estimates are imprecise and
are expected to change as additional information becomes available.
 
     Reservoir engineering is a subjective process of estimating underground
accumulation of oil and gas that cannot be measured in an exact manner.
Estimates of economically recoverable oil and gas reserves and of future net
cash flows necessarily depend upon a number of variable factors and assumptions,
such as historical production from the area compared with production from other
producing areas, the assumed effects of regulations by governmental agencies,
and assumptions concerning future oil and gas prices, future operating
 
                                       15
<PAGE>   21
 
costs, severance and excise taxes, development costs and workover and remedial
costs, all of which may in fact vary considerably from actual results. For these
reasons, estimates of the economically recoverable quantities of oil and gas
attributable to any particular group of properties, classifications of such
reserves based on risk of recovery, and estimates of the future net cash flows
expected therefrom prepared by different engineers, or by the same engineers but
at different times, may vary substantially and such reserve estimates may be
subject to downward or upward adjustment based upon such factors. Actual
production, revenues and expenditures with respect to the Partnership's reserves
will likely vary from estimates and such variances may be material. See
"Business and Properties -- Oil and Gas Reserves."
 
     The standardized measure of discounted future net cash flows referred to in
this Prospectus should not be construed as the current market value of the
estimated oil and gas reserves attributable to the Partnership's properties. In
accordance with applicable requirements of the SEC, the estimated discounted
future net cash flows from proved reserves are generally based on prices and
costs as of the date of the estimate, whereas actual future prices and costs may
be materially higher or lower. Actual future net cash flows also will be
affected by factors such as the amount and timing of actual production, supply
and demand for oil and gas, curtailments or increases in consumption by oil and
gas purchasers, and changes in governmental regulations or taxation. The timing
of actual future net cash flows from proved reserves, and thus their actual
standardized measure of discounted future net cash flows, will be affected by
the timing of both the production and the incurrence of expenses in connection
with development and production of oil and gas properties. In addition, the 10%
discount factor, which is required by the SEC to calculate discounted future net
cash flows for reporting purposes, is not necessarily the most appropriate
discount factor based on interest rates in effect from time to time and risks
associated with the Partnership or the oil and gas industry in general.
 
  Replacement and Expansion of Reserves
 
     In general, the volume of production from oil and gas properties declines
as reserves are depleted, with the rate of decline depending on reservoir
characteristics. Except to the extent the Partnership acquires properties
containing proved reserves or conducts successful exploration and development
activities, or both, the proved reserves of the Partnership will decline as
reserves are produced. The Partnership's future oil and gas production is,
therefore, highly dependent upon its ability to economically find, develop or
acquire additional reserves in commercial quantities. The business of exploring
for, developing or acquiring reserves is capital-intensive. To the extent cash
flow from operations is reduced and external sources of capital become limited
or unavailable, the Partnership's ability to make the necessary capital
investment to maintain or expand its asset base of oil and gas reserves would be
impaired. In addition, there can be no assurance that the Partnership's future
exploration, development and acquisition activities will result in additional
proved reserves or that the Partnership will be able to drill productive wells
at acceptable costs. Furthermore, although the Partnership's revenues could
increase if prevailing prices for oil or gas increase significantly, the
Partnership's finding and development costs could also increase. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."
 
  Reserve Concentration Risk
 
     The Partnership currently receives approximately 19% of its total
production from its interest in two wells located in the Scott/West Ridge area
of the Gulf Coast region, the A.L. Boudreaux #1 and the G.S. Boudreaux Estate
#1. Both of the wells were shut-in in the second quarter of 1997 while workovers
to plug back several water producing intervals were performed. Additional
workovers may be required if water production rates again increase. Any
interruption in the production from these wells could materially adversely
affect the operations of the Partnership.
 
  Risks of Drilling Activities
 
     The success of the Partnership will be materially dependent upon the
continued success of its drilling program, which will be funded in part with the
proceeds of this Offering. Oil and gas drilling involves numerous risks,
including the risk that no commercially productive oil or gas reservoirs will be
encountered, even if the reserves targeted are classified as proved. The cost of
drilling, completing and operating wells is
 
                                       16
<PAGE>   22
 
often uncertain, and drilling operations may be curtailed, delayed or canceled
as a result of a variety of factors, including unexpected drilling conditions,
pressure or irregularities in formations, equipment failures or accidents,
adverse weather conditions, compliance with governmental requirements and
shortages or delays in the availability of drilling rigs and the delivery of
equipment. The Partnership's future drilling activities may not be successful
and, if drilling activities are unsuccessful, such failure will have an adverse
effect on the Partnership's future results of operations and financial
condition. Although the Partnership has identified numerous drilling prospects,
there can be no assurance that such prospects will be drilled or that oil or gas
will be produced from any such identified prospects or any other prospects. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."
 
  Acquisition Risks
 
     The successful acquisition of producing properties requires an assessment
of recoverable reserves, future oil and gas prices, operating costs, potential
environmental and other liabilities and other factors. Such assessments are
necessarily inexact and their accuracy inherently uncertain. In connection with
such an assessment, the Partnership performs a review of the subject properties
that it believes to be generally consistent with industry practices, which
generally includes on-site inspections and the review of reports filed with
various regulatory entities. Such a review, however, will not reveal all
existing or potential problems nor will it permit a buyer to become sufficiently
familiar with the properties to fully assess their deficiencies and
capabilities. Inspections may not always be performed on every well, and
structural and environmental problems are not necessarily observable even when
an inspection is undertaken. Even when problems are identified, the seller may
be unwilling or unable to provide effective contractual protection against all
or part of these problems. There can be no assurances that any acquisition of
property interests by the Partnership will be successful and, if an acquisition
is unsuccessful, that the failure will not have an adverse effect on the
Partnership's future results of operations and financial condition.
 
  Marketability of Production
 
     The marketability of the Partnership's production depends in part upon the
availability, proximity and capacity of gathering systems, pipelines, trucking
or terminal facilities and processing facilities. The Partnership delivers
natural gas through gas gathering systems and gas pipelines, some of which it
does not own. Federal and state regulation of oil and gas production and
transportation, tax and energy policies, changes in supply and demand and
general economic conditions all could adversely affect the Partnership's ability
to produce and market its oil and gas. Any dramatic change in market factors
could have a material adverse effect on the Partnership. See "Business and
Properties -- Marketing" and "-- Regulation."
 
  Operating Hazards and Uninsured Risks
 
     The oil and gas business involves certain operating hazards such as well
blowouts, craterings, explosions, uncontrollable flows of oil, natural gas or
well fluids, fires, formations with abnormal pressures, pollution, releases of
toxic gas and other environmental hazards and risks, any of which could result
in substantial losses to the Partnership. In addition, the Partnership may be
liable for environmental damages caused by previous owners of property purchased
and leased by the Partnership. As a result, substantial liabilities to third
parties or governmental entities may be incurred, the payment of which could
reduce or eliminate the funds available for exploration, development or
acquisitions or result in the loss of the Partnership's properties. As is common
in the oil and gas industry, the Partnership is not fully insured against the
occurrence of these events either because insurance is not available or because
the Partnership has elected not to insure against their occurrence because of
prohibitive premium costs. The occurrence of an event not fully covered by
insurance could have a material adverse effect on the Partnership's financial
condition and results of operations. See "Business and Properties -- Operating
Hazards and Insurance."
 
  Dependence on Key Personnel
 
     The Partnership depends to a large extent on the services of certain key
HPI management personnel, the loss of any of whom could have a material adverse
effect on the Partnership's operations. None of HPI's
 
                                       17
<PAGE>   23
 
employees are parties to employment agreements. The Partnership does not
maintain key employee insurance on any of its employees. The Partnership
believes that its success is also dependent upon HPI's ability to continue to
employ and retain skilled technical personnel.
 
  Government Regulation and Environmental Matters
 
     Oil and gas operations are subject to various federal, state and local
government regulations that may be changed from time to time in response to
economic or political conditions. Matters subject to regulation include
discharge permits for drilling operations, drilling bonds, reports concerning
operations, the spacing of wells, unitization and pooling of properties and
taxation. From time to time, regulatory agencies have imposed price controls and
limitations on production by restricting the rate of flow of oil and gas wells
below actual production capacity in order to conserve supplies of oil and gas.
In addition, the development, production, handling, storage, transportation and
disposal of oil and gas, by-products thereof and other substances and materials
produced or used in connection with oil and gas operations are subject to
complex regulation under federal, state and local laws and regulations primarily
relating to protection of human health and the environment. The Partnership is
also subject to changing and extensive tax laws, the effects of which cannot be
predicted. The Partnership believes that it is in substantial compliance with
applicable regulations, although there can be no assurance that this is or will
remain the case. The implementation of new, or the modification of existing,
laws or regulations could have a material adverse effect on the Partnership. No
assurance can be given that existing environmental laws or regulations, as
currently interpreted or reinterpreted in the future, or future laws or
regulations will not materially adversely affect the Partnership's financial
condition and results of operations. See "Business and
Properties -- Regulation."
 
  Competition
 
     The Partnership encounters competition from other oil and gas companies in
all areas of its operation, including the acquisition of exploratory prospects
and proven properties. The Partnership's competitors include major integrated
oil and gas companies and numerous independent oil and gas companies,
individuals and drilling and income programs. Many of its competitors are large,
well-established companies with substantially larger operating staffs and
greater capital resources than the Partnership's and, in many instances, have
been engaged in the oil and gas business for a much longer time than the
Partnership. Those companies may be able to pay more for exploratory prospects
and productive oil and gas properties, and may be able to define, evaluate, bid
for and purchase a greater number of properties and prospects, than the
Partnership's financial or human resources permit. The Partnership's ability to
explore for oil and gas prospects and to acquire additional properties in the
future will be dependent upon its ability to conduct its operations, to evaluate
and select suitable properties and to consummate transactions in highly
competitive environments. See "Business and Properties -- Competition."
 
  Recent Losses
 
     The Partnership has incurred net losses in two of the last five years of
its operations. There can be no assurance that the Partnership will be
profitable in the future. See "Selected Historical Consolidated Financial Data."
 
RISKS INHERENT IN AN INVESTMENT IN THE PARTNERSHIP
 
  Cash Distributions Are Not Guaranteed and May Fluctuate with Partnership
  Performance
 
     The Partnership's objective is to maintain stable cash distributions to its
Unitholders to the extent consistent with its principal objective of maintaining
its reserve base and production. The Class C Unitholders are entitled to a
distribution of $1.00 per Class C Unit per year before any distribution may be
paid with respect to the Class A Units. Nevertheless, there can be no assurance
regarding the amounts of cash available for distribution. The actual amounts of
cash available for distribution will depend upon numerous factors, including oil
and gas prices, the level and success of the Partnership's capital expenditures,
the level of oil and gas production, debt service requirements, prevailing
economic conditions and financial, business and other
 
                                       18
<PAGE>   24
 
factors, many of which will be beyond the control of the Partnership and the
General Partner. As a result of these and other factors, there can be no
assurance regarding the actual levels of cash distributions to partners by the
Partnership or that such distributions will be equal to a partner's tax
liability on his distributive share of the Partnership's income. See "-- Tax
Risks -- Tax Liability Exceeding Cash Distributions" and "Cash Distribution
Policy."
 
  The Terms of the Partnership's Indebtedness May Affect the Partnership's
  Operations and May Limit its Ability to Make Distributions
 
     The ability of the Partnership to make principal and interest payments on
its Credit Facilities (as defined in the Glossary) depends on future
performance, which is subject to many factors, a number of which will be outside
the Partnership's control. The Partnership's Credit Facilities limit aggregate
distributions paid by the Partnership in any 12-month period to 50% of cash flow
from operations before working capital changes plus 50% of distributions
received from affiliates, if the principal amount of debt of the Partnership is
50% or more of the borrowing base. Aggregate distributions paid by the
Partnership are limited to 65% of cash flow from operations plus 65% of
distributions received from affiliates if the principal amount of debt is less
than 50% of the borrowing base. The Credit Facilities also contain restrictive
covenants that limit the Partnership's ability to incur additional indebtedness.
The payment of principal and interest on such indebtedness will reduce the cash
available to make distributions on the Units. The Partnership's leverage also
may adversely affect the Partnership's ability to finance its future operations
and capital needs, may limit its ability to pursue acquisitions and other
business opportunities and may make its results of operations more susceptible
to adverse economic conditions. See "Management's Discussion and Analysis of
Financial Condition and Results of Operations -- Liquidity and Capital
Resources."
 
  Unitholders Will Have Limited Voting Rights; The General Partner Will Control
  the Partnership
 
     The General Partner, through HPI, will manage and control the Partnership's
operations. Unlike the holders of common stock in a corporation, Unitholders
will have only limited voting rights on matters affecting the Partnership's
business. Unitholders will have no right to elect the General Partner on an
annual or other continuing basis. Unitholders will have limited influence on
matters affecting the operation of the Partnership, and third parties may find
it difficult to attempt to gain control or influence the Partnership's
activities. See "Description of the Partnership Agreements." Because each class
of Units votes separately as a class on all matters on which Unitholders vote,
the ownership of 100% of the Class B Units by The Hallwood Group Incorporated
("Hallwood Group") effectively gives it a veto right over any matters for which
Unitholders vote.
 
   
     Upon completion of this Offering, the General Partner and its affiliates
will own approximately 7.0% of the outstanding Class C Units (6.4% if the
Underwriters' over-allotment option is exercised in full), 26% of the Class A
Units and 100% of the Class B Units. As a result, such Unitholders will be able
to influence significantly, and possibly control the outcome of, certain matters
requiring a Unitholder vote. Such ownership of Units may have the effect of
delaying, deferring or preventing a change of control of the Partnership and may
adversely affect the voting and other rights of other Unitholders. See
"Principal Unitholders."
    
 
  Hallwood Group Has Ability to Veto Any Proposal to Remove General Partner
 
     The General Partner may be removed only upon the approval of such removal
and the election of a successor general partner by the holders of at least
66 2/3% of each class of the outstanding limited partner units (including
limited partner units held by the General Partner and its affiliates). Because
each class of Units votes separately as a class on all matters on which
Unitholders vote, Hallwood Group's ownership of 100% of the Class B Units
effectively gives it a veto right over any proposal to remove the General
Partner.
 
 Existence of Other Provisions that May Discourage a Change of Control in the
 Partnership
 
     The Partnership Agreement contains certain other provisions that may have
the effect of discouraging a person or group from attempting to remove the
General Partner or otherwise change the management of the
 
                                       19
<PAGE>   25
 
Partnership. The Partnership has substantial latitude in issuing equity
securities without Unitholder approval. The Partnership Agreement also contains
provisions limiting the ability of Unitholders to call meetings of Unitholders
or to acquire information about the Partnership's operations, as well as other
provisions limiting the Unitholders' ability to influence the manner or
direction of management. The effect of these provisions may be to diminish the
price at which the Class C Units will trade under certain circumstances. See
"Description of The Partnership Agreements -- Management."
 
     The Credit Facilities contain provisions relating to a change in ownership,
which if breached and not subsequently cured, may cause the Partnership to be
unable to incur further indebtedness under the Credit Facilities. There is no
restriction on the ability of the General Partner or its affiliates from
entering into a transaction that would trigger such change in ownership
provisions.
 
     On February 6, 1995 the board of directors of the General Partner approved
the adoption of a rights plan ("Rights Plan"), pursuant to which one right was
distributed for each Class A Unit to holders of record at the close of business
on February 17, 1995. The rights trade with the Class A Units. The rights will
become exercisable only in the event, with certain exceptions, that an acquiring
party accumulates 15% or more of the Class A Units, or if a party announces an
offer to acquire 30% or more of the Partnership. The rights will expire on
February 6, 2005. In addition, upon the occurrence of certain events, holders of
the rights will be entitled to purchase, for $24, either Class A Units or shares
in an "acquiring entity," with a market value at that time of $48. The existence
of the Rights Plan could make it more difficult for a party to gain control of
the Partnership and thereby discourage any such attempts to do so.
 
 The Partnership May Issue Additional Limited Partner Interests, Thereby
 Diluting Existing Unitholders' Interests
 
     The Partnership may issue additional Class C Units and other interests in
the Partnership for such consideration and on such terms and conditions as are
established by the General Partner, in its sole discretion, without the approval
of the Unitholders. The Partnership Agreement does not impose any restriction on
the Partnership's ability to issue Partnership securities ranking senior to the
Class C Units at any time. Based on the circumstances of each case, the issuance
of additional Class C Units or securities ranking senior to or on a parity with
the Class C Units may dilute the value of the interests of the then-existing
Class C Unitholders in the Partnership's net assets. Furthermore, the issuance
of Class C Units upon the exercise of the Underwriters' over-allotment option
will increase the total number of Class C Units outstanding, thereby diluting
existing Class C Unitholders' interests in the Partnership.
 
 Unitholders May Not Have Limited Liability in Certain Circumstances; Liability
 for Return of Certain Distributions
 
     The limitations on the liability of holders of limited partner interests
for the obligations of a limited partnership have not been clearly established
in some states. If it were determined that the Partnership had been conducting
business in any state without compliance with the applicable limited partnership
statute, or that the right or the exercise of the right by the Unitholders as a
group to remove the General Partner, to make certain amendments to the
Partnership Agreement or to take other action pursuant to the Partnership
Agreement constituted participation in the "control" of the Partnership's
business, then the Unitholders could be held liable in certain circumstances for
the Partnership's obligations to the same extent as a general partner. In
addition, under certain circumstances a Unitholder may be liable to the
Partnership for the amount of any improper distribution received by such
Unitholder for a period of three years from the date of the distribution. See
"Description of The Partnership Agreements -- Limited Liability" for a
discussion of the limitations on liability and the implications thereof to a
Unitholder.
 
  Dependence upon Hallwood Petroleum, Inc. for Support Services
 
     Since neither the Partnership nor its General Partner has any employees,
HPI performs all operations on behalf of the Partnership. The Partnership
reimburses HPI at its cost for direct and indirect expenses incurred by HPI for
the benefit of the Partnership and its properties. The indirect expenses for
which HPI is
 
                                       20
<PAGE>   26
 
reimbursed include employee compensation, office rent, office supplies and
employee benefits. The General Partner believes that if HPI ceased providing
these services to the Partnership or its affiliates, the costs to the
Partnership of such support services would increase.
 
  Potential Change of Control of the General Partner
 
     There are no restrictions on the ability of Hallwood Group directly or
indirectly to transfer its interest in the General Partner. If Hallwood Group
were to transfer all or part of its interest, a change of control of the General
Partner could occur, and under certain circumstances the General Partner could
be managed by an entity unrelated to Hallwood Group.
 
CONFLICTS OF INTEREST AND FIDUCIARY RESPONSIBILITIES
 
 Conflicts of Interest Exist Between the Partnership and the General Partner and
 its Affiliates
 
     Certain conflicts of interest exist and may arise in the future as a result
of the General Partner's relationships with its affiliates, on the one hand, and
the Partnership and the Unitholders, on the other hand. Hallwood G.P., Inc.
("Hallwood G.P."), a Delaware corporation, as general partner of HEPGP Ltd.
("HEPGP"), a Colorado limited partnership, the General Partner of the
Partnership, has a fiduciary duty to manage the Partnership in a manner that is
in the best interest of the Unitholders. The officers and directors of Hallwood
G.P. also have fiduciary duties to manage the General Partner in the best
interests of HEPGP's partners, Hallwood G.P. and Hallwood Group. In addition,
Messrs. Gumbiner, Troup and Guzzetti are directors and executive officers of
Hallwood Group and, as such, owe a fiduciary duty to the shareholders of
Hallwood Group. Moreover, the officers of Hallwood G.P. and certain of its
directors are also officers or directors of HCRC and, accordingly, owe a
fiduciary duty to the shareholders of HCRC. HCRC participates in oil and gas
projects with the Partnership. Consequently, the duties of Hallwood G.P. and its
officers and directors to the Unitholders of the Partnership may come into
conflict with their duties to other entities or investors. See "Conflicts of
Interest and Fiduciary Responsibilities."
 
 The General Partner May Place Properties Within the Operating Partnerships that
 are More Favorable to the General Partner
 
     EDP Operating, Ltd. ("EDPO") and HEP Operating Partnership, L.P. ("HEPO"),
(collectively, the "Operating Partnerships") have different provisions regarding
the manner in which the General Partner participates in drilling within each
Operating Partnership. The differences in allocation of costs and revenues
present the General Partner with a conflict of interest in determining through
which of the Operating Partnerships to acquire new drilling locations. The Board
of Directors of Hallwood G.P. has adopted a policy to address this potential
conflict of interest, providing generally that new wells to be drilled by the
Partnership in 14 West Texas counties, other than on properties in which EDPO
has an existing interest or that are contiguous to properties in which EDPO has
an existing interest, will be drilled by HEPO through the joint venture with the
General Partner, and that all other new drilling will be done in EDPO.
 
 The General Partner's Affiliates May Compete with the Partnership in Certain
 Circumstances
 
     Affiliates of the General Partner (including Hallwood Group and HCRC) are
not prohibited from engaging in any business or activity even if such activity
may be in competition with the Partnership. Hallwood Group does not presently
engage in oil and gas activities other than through its interests in Hallwood
G.P., HEPGP, the Partnership and HCRC. HCRC, however, is actively engaged in oil
and gas production, development and exploration. To minimize the conflicts of
interest between the Partnership and HCRC, the Board of Directors of each of
Hallwood G.P. and HCRC has adopted a policy that each Board will review annually
participation by both the Partnership and HCRC in new oil and gas properties.
Generally, the Partnership and HCRC will participate on a 50/50 basis in all
future oil and gas drilling projects, leases, concessions or acquisitions,
unless the activity is inconsistent with either entity's objectives or the
entities already have differing interests in the subject project. This policy
may change, however, if circumstances
 
                                       21
<PAGE>   27
 
change or if the Board of Directors of Hallwood G.P. or HCRC determines it is
not in such entity's best interest.
 
 Contracts Between the Partnership and the General Partner or Its Affiliates
 Will Not Be the Result of Arm's-Length Negotiations
 
     Under the terms of the Partnership Agreement, the Partnership is not
restricted from paying the General Partner or its affiliates for any services
rendered, provided such services are rendered on terms that are reasonable to
the Partnership. The Partnership Agreement does not specify who is to determine
whether the terms of transactions are reasonable. In practice, this
determination is made by management, under the supervision of the Board of
Directors of the General Partner. Transactions between the Partnership and the
General Partner and its affiliates will not be the result of arm's-length
negotiations.
 
 Employees of the General Partner's Affiliates Who Provide Services to the
 Partnership Will Also Provide Services to Other Businesses
 
     The Partnership will not have any employees and will rely on employees of
HPI to manage the Partnership's affairs. Although the General Partner will not
conduct any other business, Hallwood Group, HCRC and other affiliates of the
General Partner or the Partnership will conduct business and activities of their
own in which the Partnership will have no economic interest and which may also
be conducted by HPI's employees. There may be competing demands among the
Partnership, Hallwood Group, HCRC and such affiliates for the time and efforts
of employees who provide services to more than one of these entities.
 
  The General Partner is Indemnified and Has Limited Liability
 
     The Partnership is required to indemnify the General Partner, its
affiliates and their respective officers, directors, employees and agents to the
fullest extent permitted by law, against liabilities, costs and expenses
incurred by the General Partner or such other persons, if the General Partner or
such persons acted in good faith and in a manner they reasonably believed to be
in, or not opposed to, the best interests of the Partnership and, with respect
to any criminal proceedings, had no reasonable cause to believe the conduct was
unlawful. In addition, the Partnership Agreement expressly limits the liability
of the General Partner by providing that the General Partner, its affiliates and
their respective officers, directors, employees and agents will not be liable
for monetary damages to the Partnership, the limited partners or assignees for
errors of judgment or for any acts or omissions if the General Partner and such
other persons acted in good faith.
 
  The General Partner Receives Fees for Certain Property Acquisitions
 
     The Partnership Agreement provides that the General Partner will receive an
acquisition fee in cash or Units equal to 2% of the fair market value of the
total consideration paid in the acquisition of oil and gas properties and oil
and gas related assets by the Partnership, including acquisitions of such oil
and gas interests through the acquisition of stock of corporations and similar
transactions. With respect to acquisitions of oil and gas properties and oil and
gas related assets other than Undeveloped Acreage and Proved Undeveloped Acreage
(as defined in the Partnership Agreement), including acquisitions of such oil
and gas interests through the acquisition of stock of corporations and similar
transactions, and as an incentive for the General Partner to make acquisitions
of oil and gas properties and oil and gas related assets on behalf of the
Partnership, the General Partner also will receive 4% of the interests acquired
by the Partnership in such assets. Pursuant to the limited partnership
agreements of each of the Operating Partnerships, the General Partner also
directly or indirectly receives an interest in each well drilled by the
Operating Partnerships. The General Partner's interest in the foregoing fees, as
well as differences in rates of return on a cash investment in a property
between the General Partner and the Partnership, may result in conflicts of
interest as to whether the Partnership should engage in any activity or acquire
a property.
 
                                       22
<PAGE>   28
 
TAX RISKS
 
     For a general discussion of the expected federal income tax consequences of
owning and disposing of Class C Units, see "Material Federal Income Tax
Considerations."
 
  Tax Treatment Is Dependent on Partnership Status
 
     The availability to a holder of Class C Units of the federal income tax
benefits of an investment in the Partnership depends, in large part, on the
classification of the Partnership as a partnership for federal income tax
purposes. Based on certain representations made by the General Partner and the
Partnership, Counsel is of the opinion that, under current law, the Partnership
will be classified as a partnership for federal income tax purposes and will not
be taxed as a corporation under the publicly traded partnership rules of Section
7704 of the Code. However, no ruling from the IRS as to such status has been or
will be requested, and the opinion of Counsel is not binding on the IRS.
Moreover, in order for the Partnership to continue to be classified as a
partnership for federal income tax purposes, at least 90% of the Partnership's
gross income for each taxable year must consist of qualifying income. See
"Material Federal Income Tax Considerations -- Tax Classification of the
Partnership."
 
     If the Partnership were taxed as a corporation for federal income tax
purposes, the Partnership would pay tax on its income at corporate rates
(currently at a maximum rate of 35%), and no income, gains, losses or deductions
would flow through to the Unitholders. However, distributions would generally be
taxed to the Unitholders as corporate distributions. Moreover, because a tax
would be imposed upon the Partnership as an entity, the cash available for
distribution to the Class C Unitholders would be substantially reduced.
Treatment of the Partnership as an association taxable as a corporation or
otherwise as a taxable entity would result in a material reduction in the
anticipated cash flow and could result in a material reduction in the after-tax
return to the Class C Unitholders. See "Material Federal Income Tax
Considerations -- Tax Classification of the Partnership."
 
     There can be no assurance that the law will not be changed so as to cause
the Partnership to be treated as an association taxable as a corporation for
federal income tax purposes or otherwise to be subject to entity-level taxation.
 
  No IRS Ruling with Respect to Tax Consequences
 
     No ruling has been requested from the IRS with respect to any matter
affecting the Partnership. Accordingly, the IRS may adopt positions that differ
from Counsel's conclusions expressed herein. It may be necessary to resort to
administrative or court proceedings in an effort to sustain some or all of
Counsel's conclusions, and some or all of such conclusions ultimately may not be
sustained. The costs of any contest with the IRS will be borne directly or
indirectly by the Unitholders and the General Partner.
 
  Tax Liability Exceeding Cash Distributions
 
     A Class C Unitholder will be required to pay federal income taxes and, in
certain cases, state and local income taxes on his allocable share of the
Partnership's income, whether or not he receives cash distributions from the
Partnership. No assurance can be given that a Unitholder will receive cash
distributions equal to his allocable share of taxable income from the
Partnership or even the tax liability to him resulting from that income in any
taxable year. Further, a Class C Unitholder may incur a tax liability, in excess
of the amount of cash received, upon the sale of his Class C Units. See
"Material Federal Income Tax Considerations -- General Features of Partnership
Taxation -- Taxation of Partners" for a discussion of certain state and local
tax considerations that may be relevant to prospective Unitholders.
 
  Taxable Income to Tax-Exempt Organizations and Certain Other Investors
 
     Investment in Class C Units by certain tax-exempt entities, regulated
investment companies and foreign persons raises issues unique to such persons.
See "Material Federal Income Tax Considerations -- Other Tax
Consequences -- Investment by Tax-Exempt Entities." For example, virtually all
of the taxable income
 
                                       23
<PAGE>   29
 
derived by most organizations exempt from federal income tax (including IRAs and
other retirement plans) from the ownership of a Class C Unit may be unrelated
business taxable income and thus will be taxable to such a Unitholder.
 
  Nondeductibility of Losses
 
     In the case of taxpayers subject to the passive loss rules (generally
individuals and closely held corporations), losses generated by the Partnership,
if any, will only be available to offset future income generated by the
Partnership and cannot be used to offset income from other activities, including
passive activities or investments. Passive losses that are not deductible
because they exceed the Unitholder's income generated by the Partnership may be
deducted in full when the Unitholder disposes of all of his Units in a fully
taxable transaction with an unrelated party. Net passive income from the
Partnership may be offset by unused Partnership losses carried over from prior
years, but not by losses from other passive activities, including losses from
other publicly traded partnerships. See "Material Federal Income Tax
Considerations -- General Features of Partnership Taxation -- Limitations on
Deduction of Losses."
 
 Uniformity of Class C Units and Risks of Nonconforming Depletion, Depreciation
 and Amortization Conventions
 
     Because the Partnership cannot match transferors and transferees of Class C
Units, uniformity of the economic and tax characteristics of the Class C Units
to a purchaser of Class C Units must be maintained. To maintain uniformity, the
Partnership has adopted certain depletion, depreciation and amortization
conventions and adjustments that do not conform with all aspects of certain
proposed and final Treasury Regulations. The IRS may challenge those conventions
and adjustments and, if such a challenge were sustained, the uniformity of Class
C Units could be affected. Non-uniformity could adversely affect the amount of
tax depletion, depreciation and amortization available to a purchaser of Class C
Units and could have a negative impact on the value of the Class C Units. See
"Material Federal Income Tax Considerations -- Uniformity of Units."
 
  State, Local and Other Tax Filings and Payments by Unitholders
 
     In addition to federal income taxes, Unitholders will be subject to other
taxes, such as state and local taxes, unincorporated business taxes, and estate,
inheritance or intangible taxes, that may be imposed by the various
jurisdictions in which the Partnership does business or owns property. A
Unitholder may be required to file state and local income tax returns and pay
state and local income taxes in some or all of the various jurisdictions in
which the Partnership does business or owns property, and may be subject to
penalties for failure to comply with those requirements. It is the
responsibility of each Unitholder to file all United States federal, state and
local tax returns that may be required of such Unitholder. Counsel has not
rendered an opinion on the state or local tax consequences of an investment in
the Partnership. See "Material Federal Income Tax Considerations -- Other Tax
Consequences -- State and Local Taxes."
 
  Tax Shelter Registration; Potential IRS Audit
 
     The Partnership is registered with the IRS as a tax shelter and has been
issued a tax shelter identification number. Issuance of a registration number
does not indicate that this investment or the claimed tax benefits have been
reviewed, examined or approved by the IRS. See "Material Federal Income Tax
Considerations -- Administrative Matters -- Tax Shelter Registration." No
assurance can be given that the Partnership will not be audited by the IRS or
that tax adjustments will not be made. The rights of a Unitholder owning less
than a 1% profits interest in the Partnership to participate in the income tax
audit process are very limited. Further, any adjustments in the Partnership's
returns will lead to adjustments in the Unitholders' returns and may lead to
audits of Unitholders' returns and adjustments of items unrelated to the
Partnership. A Unitholder would bear the cost of any expenses incurred in
connection with an examination of such Unitholder's personal tax return. See
"Material Federal Income Tax Considerations -- Administrative Matters."
 
                                       24
<PAGE>   30
 
  Partnership Tax Information and Audits
 
     The Partnership furnishes each partner with a Schedule K-1 that sets forth
his distributive share of income, gains, losses and deductions. In preparing
these schedules, the Partnership uses various accounting and reporting
conventions and adopts various depreciation and amortization methods. There is
no assurance that these schedules will yield a result that conforms to statutory
or regulatory requirements or to administrative pronouncements of the IRS.
Further, the Partnership's tax return may be audited, and any such audit could
result in an audit of a partner's individual tax return as well as increased
liabilities for taxes because of adjustments resulting from the audit.
 
  Counsel Unable to Render an Opinion as to Certain Federal Income Tax Matters
 
     For the reasons described in "Material Federal Income Tax Considerations,"
counsel is unable to render an opinion with respect to the following specific
federal income tax issues: (i) the treatment of a Unitholder whose Units are
loaned to a "short seller;" (ii) whether the Partnership's allocations of
income, gain, loss and deduction with respect to contributed property and
revalued property are consistent with the requirements under Section 704(c) of
the Code; (iii) whether the Partnership's allocations of depletable basis are
consistent with the requirements under Section 613A of the Code; (iv) whether
the Partnership's allocations of income, gain, loss and deduction have
substantial economic effect under Section 704(b) of the Code; (v) whether the
Partnership's method of computing and effecting the depreciation, depletion and
amortization adjustments under Section 743 of the Code is sustainable; (vi)
whether the Partnership's conventions for allocating taxable income and losses
between the transferor and the transferee of Units is permitted by existing
Regulations; and (vii) whether a Unitholder acquiring Units in separate
transactions must maintain a single aggregate adjusted tax basis in his Units.
 
                                       25
<PAGE>   31
 
                 PRICE RANGE OF CLASS C UNITS AND DISTRIBUTIONS
 
     On January 17, 1996, the Partnership's Class C Units began trading on the
American Stock Exchange ("AMEX") under the symbol "HEPC." As of December 31,
1997, there were approximately 15,000 holders of record of Class C Units. The
closing price of the Class C Units on the AMEX on January 30, 1998 was $11.00.
The following table sets forth, for the periods indicated, the high and low
reported sales prices for the Class C Units as reported on AMEX and the
distributions paid per Class C Unit for the corresponding periods.
 
<TABLE>
<CAPTION>
                 CLASS C UNITS                      HIGH            LOW                   DISTRIBUTIONS
                 -------------                    --------        --------                -------------
<S>                                               <C>             <C>                     <C>
First quarter 1996                                  $ 7 7/8         $ 6 1/2                   $ .25
Second quarter 1996                                   8 1/2           7 3/8                     .25
Third quarter 1996                                    9 5/8           8                         .25
Fourth quarter 1996                                   9 7/8           8 3/4                     .25
                                                                                              -----
                                                                                              $1.00
                                                                                              =====
 
First quarter 1997                                  $10             $ 8 5/8                   $ .25
Second quarter 1997                                   9 3/8           8 3/4                     .25
Third quarter 1997                                   10 1/2           8 7/8                     .25
Fourth quarter 1997                                  14 7/8          10                         .25
                                                                                              -----
                                                                                              $1.00
                                                                                              =====
First quarter 1998 (through January 30, 1998)       $11             $10 1/2
</TABLE>
 
                                USE OF PROCEEDS
 
   
     The net proceeds to the Partnership from the sale of the Class C Units
offered hereby are estimated to be $16,315,000 ($18,826,000 if the Underwriters'
over-allotment option is exercised in full), after deducting the underwriting
discount and estimated offering expenses.
    
 
     The Partnership intends to use all of the net proceeds from the Offering to
accelerate the drilling of a portion of its current project inventory. See
"Prospectus Summary -- Current Operations" for a discussion of the Partnership's
project inventory at December 31, 1997. Prior to such use, the Partnership
intends to repay a portion of outstanding indebtedness under its Third Amended
and Restated Credit Agreement (the "Credit Agreement"), which amounts will then
become available to the Partnership under the Credit Agreement. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Liquidity and Capital Resources" for a discussion of the
Partnership's credit facilities.
 
     As of September 30, 1997, $27.7 million was outstanding under the Credit
Agreement. The Credit Agreement matures May 31, 1999. Borrowings under the
Credit Agreement bear interest at the lower of the Certificate of Deposit rate
plus from 1.375% to 1.875%, prime plus  1/2% or the Euro-Dollar rate plus from
1.25% to 1.75%. At September 30, 1997, the applicable interest rate was 7.2%.
 
                                       26
<PAGE>   32
 
                                 CAPITALIZATION
 
   
     The following table sets forth the historical capitalization of the
Partnership as of September 30, 1997 and the pro forma capitalization of the
Partnership as of September 30, 1997 as adjusted to give effect to the sale by
the Partnership of 1,800,000 Class C Units in connection with the Offering. This
table should be read in conjunction with the Consolidated Financial Statements
and notes thereto and "Management's Discussion and Analysis of Financial
Condition and Results of Operations" included elsewhere in this Prospectus.
    
 
   
<TABLE>
<CAPTION>
                                                     AS OF SEPTEMBER 30, 1997
                                              ---------------------------------------
                                               ACTUAL                     AS ADJUSTED
                                              --------                    -----------
<S>                                           <C>                         <C>
DEBT:
     Current portion of long-term debt......  $      0                     $      0
     Long-term debt.........................    31,986                       15,671
                                              --------                     --------
          Total Debt........................    31,986                       15,671
                                              --------                     --------
PARTNERS' CAPITAL:
     Class A Units..........................    65,374                       65,374
     Class B Subordinated Units.............     1,379                        1,379
     Class C Units..........................     5,146                       21,461
     General Partner(1).....................     3,521                        3,686
     Treasury Units.........................    (6,979)                      (6,979)
                                              --------                     --------
            Total Partners' Capital.........    68,441                       84,921
                                              --------                     --------
Total Capitalization........................  $100,427                     $100,592
                                              ========                     ========
</TABLE>
    
 
- ---------------
 
(1) The Partnership Agreement requires the General Partner to contribute an
    amount equal to 1.01% of the capital contributed by limited partners.
 
                            CASH DISTRIBUTION POLICY
 
     The Partnership's policy is to maintain stable cash distributions to its
Unitholders to the extent consistent with its principal objective of maintaining
its reserve base and production. Class C Unitholders are paid a preferred
distribution of $1.00 per Class C Unit per year before distributions are paid to
other limited partners. At $11.00, the closing market price of the Class C Units
on the AMEX on January 30, 1998, the Class C Units had an indicated pre-tax
yield of 9.1%. The Partnership anticipates that taxable income allocable to
Class C Units generally will be equal to distributions to the persons who
purchase the Class C Units in this Offering, although there can be no assurance
that this will always be the case. Since March 1996, the Partnership has
distributed $0.25 per Class C Unit per quarter or $1.00 per Class C Unit on an
annualized basis. Since March 1996, the Partnership has also distributed $0.13
per Class A Unit per quarter or $0.52 per Class A Unit on an annualized basis.
The Partnership's Credit Facilities limit aggregate distributions paid by the
Partnership in any 12-month period to 50% of cash flow from operations before
working capital changes plus 50% of distributions received from affiliates, if
the principal amount of debt of the Partnership is 50% or more of the borrowing
base. Aggregate distributions paid by the Partnership are limited to 65% of cash
flow from operations before working capital changes plus 65% of distributions
received from affiliates if the principal amount of debt is less than 50% of the
borrowing base.
 
     Distributions by the Partnership are made within approximately 45 days
after the end of each quarter ending March 31, June 30, September 30 and
December 31, to holders of record on the applicable record date.
 
                                       27
<PAGE>   33
 
                SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA
 
     The Selected Historical Consolidated Financial Data of the Partnership for
the five years ended December 31, 1996 has been derived from the Partnership's
audited Consolidated Financial Statements and the notes thereto contained
elsewhere in this Prospectus. The data presented for the nine months ended
September 30, 1997 and September 30, 1996 has been derived from the
Partnership's unaudited Consolidated Financial Statements and the notes thereto
contained elsewhere in this Prospectus. The Selected Historical Consolidated
Financial Data is qualified in its entirety and should be read in conjunction
with "Capitalization," "Management's Discussion and Analysis of Financial
Condition and Results of Operations" and the audited and unaudited Consolidated
Financial Statements of the Partnership and the related notes thereto included
elsewhere in this Prospectus.
 
                                       28
<PAGE>   34
 
                SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA
 
<TABLE>
<CAPTION>
                                                      NINE MONTHS
                                                         ENDED
                                                     SEPTEMBER 30,                    YEAR ENDED DECEMBER 31,
                                                  -------------------   ----------------------------------------------------
                                                    1997       1996       1996       1995       1994       1993       1992
                                                  --------   --------   --------   --------   --------   --------   --------
                                                                     (IN THOUSANDS, EXCEPT PER UNIT DATA)
<S>                                               <C>        <C>        <C>        <C>        <C>        <C>        <C>
INCOME STATEMENT DATA:
Revenues:
  Oil and gas operations........................  $ 32,302   $ 37,961   $ 50,644   $ 43,454   $ 43,899   $ 44,106   $ 52,822
  Gas marketing and transportation(1)...........                                                            5,046      7,556
  Interest......................................       328        331        422        326        583        461        352
                                                  --------   --------   --------   --------   --------   --------   --------
                                                    32,630     38,292     51,066     43,780     44,482     49,613     60,730
                                                  --------   --------   --------   --------   --------   --------   --------
Expenses:
  Oil and gas operations........................     8,767      8,930     12,237     12,092     12,907     11,689     14,107
  Gas marketing and transportation..............                                                            4,611      7,900
  General and administrative....................     3,250      3,133      4,540      5,580      5,630      6,812      7,732
  Depreciation, depletion and amortization......     8,657     10,554     13,500     15,827     18,168     17,076     18,866
  Impairment of oil and gas properties..........                                     10,943      7,345
  Litigation settlement expense (revenue).......      (240)       230        230        386      3,370     (9,768)       245
                                                  --------   --------   --------   --------   --------   --------   --------
                                                    20,434     22,847     30,507     44,828     47,420     30,420     48,850
                                                  --------   --------   --------   --------   --------   --------   --------
  Operating income (loss).......................    12,196     15,445     20,559     (1,048)    (2,938)    19,193     11,880
                                                  --------   --------   --------   --------   --------   --------   --------
Interest and other income (expense).............    (2,315)    (3,047)    (3,878)    (4,245)    (3,834)    (4,692)    (6,512)
Equity in earnings (loss) of HCRC...............     1,384      1,227      1,768     (2,273)    (1,499)       112        732
Minority interest in net income of affiliates...    (1,341)    (2,092)    (2,723)    (1,465)    (1,822)    (1,549)    (2,487)
                                                  --------   --------   --------   --------   --------   --------   --------
                                                    (2,272)    (3,912)    (4,833)    (7,983)    (7,155)    (6,129)    (8,267)
                                                  --------   --------   --------   --------   --------   --------   --------
  Net income (loss).............................  $  9,924   $ 11,533   $ 15,726   $ (9,031)  $(10,093)  $ 13,064   $  3,613
                                                  ========   ========   ========   ========   ========   ========   ========
Net income (loss) attributable to General
  Partner.......................................  $  1,408   $  1,923   $  2,569   $  1,289   $  1,631   $  2,394   $  1,638
Net income attributable to Class C limited
  partners......................................  $    498   $    498   $    664
Net income (loss) attributable to Class A and
  Class B limited Partners......................  $  8,018   $  9,112   $ 12,493   $(10,320)  $(11,724)  $ 10,670   $  1,975
                                                  ========   ========   ========   ========   ========   ========   ========
Net income (loss) per class A and Class B
  Unit(2).......................................  $    .86   $    .99   $   1.34   $  (1.07)  $  (1.20)  $   1.14   $    .24
                                                  ========   ========   ========   ========   ========   ========   ========
Net income (loss) per Class C Unit..............  $    .75   $    .75   $   1.00
CASH FLOW DATA:
  Net cash provided by operating activities.....  $ 18,278   $ 22,748   $ 26,423   $ 18,449   $ 21,575   $ 29,312   $ 29,693
  Net cash used in investing activities.........  $(11,563)  $ (9,450)  $(12,485)  $(10,737)  $(11,061)  $ (2,870)  $   (795)
  Net cash used in financing activities.........  $(10,486)  $(10,776)  $(13,375)  $ (5,144)  $(21,244)  $(27,031)  $(20,693)
OTHER FINANCIAL DATA:
  Operating cash flow(3)........................  $ 18,918   $ 22,543   $ 30,269   $ 20,766   $ 19,588   $ 32,871   $ 25,260
  Capital expenditures(4).......................  $ 11,572   $  9,505   $ 13,299   $ 17,768   $ 13,885   $ 15,386   $ 15,079
  Distributions to General Partner..............  $  1,194   $  1,710   $  2,243   $  2,359   $  2,452   $  2,168   $  1,855
  Distributions per Class A and Class B Unit....  $   0.39   $   0.39   $   0.52   $   0.80   $   0.80   $   0.80   $   0.80
  Distributions per Class C Unit................  $   0.75   $   0.75   $   1.00
  Ratio of Earnings to Fixed Charges and Class C
    Distributions...............................      4.05       3.90       4.08         (5)        (5)      4.08       1.49
BALANCE SHEET DATA:
  Working capital (deficit).....................  $ (2,875)  $   (525)  $ (1,355)  $ (4,363)  $ (9,390)  $  7,020   $  6,306
  Property, plant and equipment, net............  $ 92,499   $ 87,914   $ 88,549   $ 94,926   $107,414   $122,133   $129,029
  Total Assets..................................  $124,650   $121,093   $122,792   $125,152   $136,281   $171,624   $186,087
  Long-term debt................................  $ 31,986   $ 31,398   $ 29,461   $ 37,557   $ 25,898   $ 38,010   $ 52,814
  Partners' capital.............................  $ 68,441   $ 62,016   $ 64,215   $ 57,572   $ 78,803   $ 98,576   $ 89,779
</TABLE>
 
- ---------------
 
(1) The Partnership sold its gas marketing and transportation operations during
    1993.
 
(2) As a result of the issuance of Class A Units in connection with a litigation
    settlement in 1995, all per Unit information for periods prior to December
    31, 1995 has been retroactively restated. See Note 12 to the Partnership's
    December 31, 1996 Consolidated Financial Statements included elsewhere in
    this Prospectus.
 
                                       29
<PAGE>   35
 
(3) Operating cash flow represents cash flows from operating activities prior to
    changes in assets and liabilities. Management of the Partnership believes
    that operating cash flow may provide additional information about the
    Partnership's ability to meet its future requirements for debt service,
    capital expenditures and working capital. Operating cash flow is a financial
    measure commonly used in the oil and gas industry and should not be
    considered in isolation or as a substitute for net income, operating income,
    cash flows from operating activities or any other measure of financial
    performance presented in accordance with generally accepted accounting
    principles or as a measure of a company's profitability or liquidity.
    Because operating cash flow excludes changes in assets and liabilities and
    these measures may vary among companies and operating cash flow data
    presented above may not be comparable to similarly titled measures of other
    companies or partnerships.
 
(4) Consists of costs incurred by the Partnership in connection with property
    acquisition, exploration and development. See Note 2 to the Partnership's
    December 31, 1996 Consolidated Financial Statements included elsewhere in
    this Prospectus. The costs for each of the years ended December 31, include
    the Partnership's share of the capital expenditures for such periods of its
    proportionately consolidated affiliates. The costs for the nine-month
    periods ended September 30, 1997 and 1996 do not include the pro rata
    expenditures of the Partnership's proportionately consolidated affiliates.
    See Note 1 to the Partnership's December 31, 1996 Consolidated Financial
    Statements included elsewhere in this Prospectus.
 
(5) The Partnership had a loss in these years. Interest expense was $3,956,000
    in 1995 and $3,445,000 in 1994.
 
                                       30
<PAGE>   36
 
               MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                      CONDITION AND RESULTS OF OPERATIONS
 
     The following management's discussion and analysis of the financial
condition and results of operations of the Partnership should be read in
conjunction with the preceding "Selected Historical Consolidated Financial
Information." Additionally, the Partnership's Consolidated Financial Statements
and the Notes thereto, as well as other data included in this Prospectus, should
be read and analyzed in combination with the analysis below.
 
GENERAL
 
     HEP began operations in 1985 after it completed an exchange offer in which
it acquired oil and gas interests and operations from a number of oil and gas
partnerships, corporations and individual working interest owners. In 1990, the
Partnership merged with Energy Development Partners, Ltd., another master
limited partnership. HEP is a partnership and therefore, is not subject to
federal income tax. Instead the federal income tax effect of its activities
accrues to its partners. Therefore, no provision for federal income taxes is
included in HEP's financial data.
 
RESULTS OF OPERATIONS
 
     The following table is presented to contrast the Partnership's production
and weighted average oil and gas prices (in thousands except for price) for the
periods indicated:
 
<TABLE>
<CAPTION>
                                             FOR THE NINE MONTHS
                                             ENDED SEPTEMBER 30,                     FOR THE YEARS ENDED DECEMBER 31,
                                      ---------------------------------   ------------------------------------------------------
                                           1997              1996               1996               1995               1994
                                      ---------------   ---------------   ----------------   ----------------   ----------------
                                       OIL      GAS      OIL      GAS      OIL       GAS      OIL       GAS      OIL       GAS
                                      ------   ------   ------   ------   ------   -------   ------   -------   ------   -------
                                      (BBL)    (MCF)    (BBL)    (MCF)    (BBL)     (MCF)    (BBL)     (MCF)    (BBL)     (MCF)
<S>                                   <C>      <C>      <C>      <C>      <C>      <C>       <C>      <C>       <C>      <C>
Production..........................     581    8,588      749    9,790      972    12,786      993    13,035      939    13,208
Weighted average sales price(1).....  $19.20   $ 2.22   $19.49   $ 2.18   $20.10   $  2.24   $17.36   $  1.82   $16.47   $  1.97
</TABLE>
 
- ---------------
 
(1) Includes effects of hedging. See " -- Changing Prices and Hedging."
 
NINE MONTHS ENDED SEPTEMBER 30, 1997 COMPARED TO NINE MONTHS ENDED SEPTEMBER 30,
1996
 
OIL AND GAS OPERATIONS REVENUES
 
     Oil and gas operations revenues, which include oil and gas sales as well as
revenue from pipeline, facilities and other, decreased $5,659,000 during the
first nine months of 1997 as compared to the first nine months of 1996. The
decrease was comprised of a 22% decrease in oil production, and a 12% decrease
in gas production. The weighted average sales price for oil and gas was flat
from period to period. Approximately 30% of the decrease in production was due
to the temporary shut-in of the A.L. Boudreaux #1 and G.S. Boudreaux Estate #1
wells for workover, and the remainder was due to normal production declines.
 
     During the second quarter of 1997, management determined that workovers on
the Louisiana wells were necessary because water production had increased to
levels that were unacceptable. The operator performed workovers in August 1997
which successfully plugged back several water producing intervals within the Bol
Mex 3 Zones of both wells. As a result of the workovers, water production on
both wells decreased, and both oil and gas production continued at rates
approximating those prior to the workovers. HEP was not required to pay any
shut-in royalties. Additional workovers may be required if water production
rates again increase.
 
     The effect of the Partnership's hedging transactions was to decrease the
Partnership's weighted average oil prices from $19.56 per Bbl to $19.20 per Bbl,
and weighted average natural gas prices from $2.40 per Mcf to $2.22 per Mcf,
resulting in a $1,755,000 decrease in oil and gas operations revenue for the
first nine months of 1997.
 
                                       31
<PAGE>   37
 
INTEREST REVENUES
 
     Interest income decreased $3,000 for the nine months ended September 30,
1997 compared to the nine months ended September 30, 1996 due to lower interest
rates.
 
OIL AND GAS OPERATIONS EXPENSE
 
     Oil and gas operations expense decreased $163,000 during the first nine
months of 1997 as compared with the first nine months of 1996, primarily as a
result of a $200,000 decrease in production taxes due to the decrease in oil and
gas production described above, offset by increased maintenance expense.
 
GENERAL AND ADMINISTRATIVE EXPENSE
 
     General and administrative expense includes costs incurred for direct
administrative services, such as legal, audit and reserve reports, as well as
allocated internal overhead incurred by HPI on behalf of the Partnership. These
expenses increased $117,000 during the first nine months of 1997 as compared
with the first nine months of 1996, primarily due to a net increase in numerous
miscellaneous items, none of which was individually significant.
 
DEPRECIATION, DEPLETION AND AMORTIZATION EXPENSE
 
     Depreciation, depletion and amortization expense decreased $1,897,000
during the first nine months of 1997 as compared to the first nine months of
1996. The decrease was primarily the result of a lower depletion rate during
1997 as compared to 1996, due to the decrease in production described above.
 
LITIGATION SETTLEMENT
 
     Litigation settlement revenues of $240,000 during the first nine months of
1997 was comprised of insurance proceeds which reimbursed a portion of expense
incurred in a prior period to settle certain litigation. Litigation settlement
expense of $230,000 during the first nine months of 1996 consisted primarily of
expenses incurred to settle a property related lawsuit.
 
INTEREST AND OTHER INCOME (EXPENSE)
 
     Interest and other income (expense) decreased $732,000 during the first
nine months of 1997 compared to the first nine months of 1996, primarily as
result of lower outstanding debt during 1997.
 
EQUITY IN EARNINGS (LOSS) OF HCRC
 
     Equity in earnings (loss) of HCRC represents the Partnership's share of net
income attributable to its equity investment in HCRC. The Partnership's equity
in HCRC's earnings increased by $157,000 during the first nine months of 1997 as
compared with the first nine months of 1996, primarily due to an increase in
HEP's ownership of HCRC from 40% to 46% during the second quarter of 1996.
 
     Although HCRC and HEP own interests on many of the same properties, their
results of operations do not correspond due to different organizational
structures.
 
MINORITY INTEREST IN NET INCOME OF AFFILIATES
 
     Minority interest in net income of affiliates decreased $751,000 during the
first nine months of 1997 as compared to the first nine months of 1996, due to a
decrease in the affiliates' oil and gas production and revenues in 1997.
 
                                       32
<PAGE>   38
 
1996 COMPARED TO 1995
 
OIL AND GAS OPERATIONS REVENUES
 
     Oil and gas operations revenues increased $7,190,000 during 1996 as
compared with 1995. The increase was comprised of a 16% increase in the weighted
average sales price received for oil and a 23% increase in the weighted average
sales price received for natural gas, partially offset by a 2% decrease in oil
and gas production. Property sales accounted for 80% of the decrease in
production and the remainder was due to normal production declines. Also
included in the increase in revenues was a $48,000 increase in revenues from
pipeline, facilities and other.
 
     The effect of the Partnership's hedging transactions was to decrease the
Partnership's weighted average oil prices from $20.85 per Bbl to $20.10 per Bbl,
and weighted average natural gas prices from $2.38 per Mcf to $2.24 per Mcf,
resulting in a $2,519,000 decrease in oil and gas operations revenue for 1996.
 
INTEREST REVENUES
 
     Interest income increased $96,000 during 1996 compared with 1995, as a
result of a higher average cash balance during 1996 compared with 1995.
 
OIL AND GAS OPERATIONS EXPENSE
 
     Oil and gas operations expense increased $145,000 during 1996 as compared
with 1995, primarily as a result of increased production taxes due to the
increase in 1996 oil and gas operations revenue discussed above.
 
GENERAL AND ADMINISTRATIVE EXPENSE
 
     General and administrative expense decreased $1,040,000 during 1996 as
compared with 1995. Approximately 50% of the decrease is due to a decrease in
performance-based compensation. Approximately 10% of the decrease is due to
lower legal expense in 1996 due to the settlement of a significant lawsuit
during 1995. The remainder is due to a net decrease in numerous miscellaneous
items, none of which is individually significant.
 
DEPRECIATION, DEPLETION AND AMORTIZATION EXPENSE
 
     Depreciation, depletion and amortization expense decreased $2,327,000
during 1996 as compared with 1995. The decrease was primarily the result of
lower capitalized costs in 1996 as compared with 1995, primarily due to the
property impairments recorded during 1995 and 1994.
 
IMPAIRMENT OF OIL AND GAS PROPERTIES
 
     Impairment of oil and gas properties during 1995 represents the impairment
of $7,000,000 recorded because capitalized costs at June 30, 1995 exceeded the
standardized measure of discounted future net cash flows from proved oil and gas
reserves, based on prices at that date of $16.66 per Bbl of oil and $1.52 per
Mcf of gas, as well as the write-off of the Partnership's investment in an
Indonesian project of $3,943,000.
 
LITIGATION SETTLEMENT EXPENSE
 
     Litigation settlement expense during 1996 and 1995 consists primarily of
expenses incurred to settle various individually insignificant claims against
the Partnership.
 
INTEREST AND OTHER INCOME (EXPENSE)
 
     Interest and other income (expense) decreased $367,000 during 1996 compared
to 1995, primarily as a result of lower outstanding debt during 1996.
 
                                       33
<PAGE>   39
 
EQUITY IN EARNINGS (LOSS) OF HCRC
 
     The Partnership's equity in HCRC's earnings increased by $4,041,000 during
1996 as compared with 1995. Approximately $311,000 of the increase is the result
of a 6% increase in the Partnership's ownership of HCRC resulting from the
Partnership's purchase of 12,965 shares of HCRC common stock during the second
quarter of 1996. Approximately $2,240,000 of the increase is due to higher oil
and gas prices received by HCRC during 1996, and the remainder of the increase
is due to the inclusion in 1995 of impairment expense resulting from HCRC's
write-off of its investment in an Indonesian project and other property
impairments.
 
MINORITY INTEREST IN NET INCOME OF AFFILIATES
 
     Minority interest in net income of affiliates increased by $1,258,000
during 1996 as compared to 1995, due to an increase in the affiliates' oil and
gas production and revenues in 1996.
 
1995 COMPARED TO 1994
 
OIL AND GAS OPERATIONS REVENUES
 
     Oil and gas operations revenues decreased $445,000 during 1995 as compared
with 1994. The decrease was comprised of an 8% decrease in the weighted average
sales price received for natural gas and a decrease in natural gas production,
partially offset by a 5% increase in the weighted average sales price received
for oil and an increase in oil production. Natural gas production decreased 1%
due to normal production declines. Oil production increased 6% due to increased
production from developmental drilling projects in West Texas, offset by normal
production declines. Also included in the increase in revenues is a $41,000
increase in revenues from pipeline, facilities and other.
 
     The effect of the Partnership's hedging transactions was to increase the
Partnership's weighted average sales prices for oil from $16.98 per Bbl to
$17.36 per Bbl and weighted average sales prices for natural gas from $1.58 per
Mcf to $1.82 per Mcf, resulting in a $3,505,000 increase in oil and gas
operations revenue for 1995.
 
INTEREST REVENUES
 
     Interest income decreased $257,000 during 1995 compared with 1994, as a
result of a lower average cash balance during 1995.
 
OIL AND GAS OPERATIONS EXPENSE
 
     Oil and gas operations expense decreased $815,000 during 1995 as compared
with 1994, primarily as a result of general cost reductions in West Texas.
 
GENERAL AND ADMINISTRATIVE EXPENSE
 
     General and administrative expense decreased $50,000 during 1995 as
compared to 1994.
 
DEPRECIATION, DEPLETION AND AMORTIZATION EXPENSE
 
     Depreciation, depletion and amortization expense decreased $2,341,000
during 1995 as compared with 1994, primarily as a result of lower capitalized
costs in 1995 as compared with 1994. Such lower capitalized costs were primarily
due to the property impairments recorded during the second quarter of 1995 and
the fourth quarter of 1994.
 
IMPAIRMENT OF OIL AND GAS PROPERTIES
 
     Impairment expense was $10,943,000 in 1995 and $7,345,000 in 1994.
Impairment of oil and gas properties during 1995 represents the impairment of
$7,000,000 recorded due to the capitalized costs of the Partnership's properties
at June 30, 1995 exceeding the standardized measure of discounted future net
cash flows from proved oil and gas reserves, based on prices at that date of
$16.66 per Bbl of oil and $1.52 per Mcf
 
                                       34
<PAGE>   40
 
of natural gas, as well as the write-off of the Partnership's investment in an
Indonesian project of $3,943,000. The impairment of oil and gas properties
during 1994 represents an impairment of $6,000,000 recorded due to the
capitalized costs of the Partnership's properties at December 31, 1994 exceeding
the standardized measure of discounted future net cash flows from proved oil and
gas reserves, based on prices at that date of $15.80 per Bbl of oil and $1.72
per Mcf of natural gas, as well as the write-off of certain foreign drilling
projects of $1,344,000.
 
LITIGATION SETTLEMENT
 
     Litigation settlement expense was $386,000 in 1995 as compared to
$3,370,000 in 1994. Litigation settlement expense during 1995 consists primarily
of expenses incurred to settle various individually insignificant claims against
the Partnership. Litigation settlement expense during 1994 represents the
settlement of claims against the Partnership, which are further discussed in
Note 13 to the December 31, 1996 Consolidated Financial Statements included
elsewhere in this Prospectus, as well as an amount paid to settle a claim for
royalties on a 1989 take-or-pay settlement.
 
INTEREST AND OTHER INCOME (EXPENSE)
 
     Interest and other income (expense) increased $411,000 during 1995 as
compared with 1994, due to a higher average outstanding debt balance in 1995.
 
EQUITY IN EARNINGS (LOSS) OF HCRC
 
     The Partnership's equity in HCRC's loss increased by $774,000 during 1995
as compared to 1994. The increase was primarily due to a $5,000,000 property
impairment recorded by HCRC during 1995 as a result of oil and gas prices, and
an additional impairment of $4,277,000 representing the write-off of HCRC's
investment in the Indonesian project, offset by increased revenues during 1995.
 
MINORITY INTEREST IN NET INCOME OF AFFILIATES
 
     Minority interest in net income of affiliates decreased $357,000 in 1995
compared to 1994, primarily as a result of a decrease in the affiliates' oil and
gas production.
 
LIQUIDITY AND CAPITAL RESOURCES
 
     CASH FLOW
 
     The Partnership generated $18,278,000 of net cash flow from operating
activities in the first nine months of 1997, compared to $22,748,000 in the
first nine months of 1996. The Partnership used the cash flow to meet its
objectives of reserve growth and payment of distributions to partners, as well
as to continue to reduce its debt burden. The Partnership spent $11,572,000 on
property additions, exploration and development, paid distributions to partners
of $5,583,000 and paid down debt in the amount of $3,285,000.
 
     The Partnership generated $26,423,000 of net cash flow from operating
activities in 1996, an increase of 43% over 1995. The increase in cash flow from
operating activities was the result of increased production levels combined with
higher product prices in 1996. The Partnership used the cash flow to meet its
objectives of reserve growth and payment of distributions to partners, as well
as to reduce its debt burden. The Partnership spent $12,615,000 on property
additions and exploration and development costs and received $5,294,000 from the
sale of various properties in 1996. The Partnership paid distributions to
partners of $8,177,000 and had net debt paydowns of $7,088,000, which was
greater than the budgeted paydowns in debt for 1996, including amounts related
to an investment it refinanced in 1996. Investments in affiliates, distributions
paid by consolidated affiliates to minority interests, contract settlement
payments and other financing activities accounted for the remaining $3,275,000
used in investing and financing activities in 1996.
 
                                       35
<PAGE>   41
 
     PROPERTY PURCHASES, SALES AND CAPITAL BUDGET
 
     Through September 30, 1997, the Partnership incurred approximately
$11,572,000 for exploration, development and acquisition costs toward the 1997
capital budget of $15,500,000. The expenditures were comprised of approximately
$9,073,000 for exploration and development and approximately $2,499,000 for
property acquisitions.
 
     Through the first nine months of 1997, the Partnership's significant
capital expenditures included approximately $5,750,000 for the drilling of 35
wells, 25 of which were successful, and acreage and data acquisition in the
Greater Permian Region in Texas and Southeast New Mexico; approximately
$2,250,000 on drilling, recompletion or repair of six wells, four of which were
successful, in the Gulf Coast Region in Louisiana and Texas; approximately
$1,702,000 for the drilling and recompletion of 17 wells, 11 of which were
successful, in the Rocky Mountain Region in Colorado, Montana, North Dakota,
Northwest New Mexico and Wyoming; and the remainder on numerous projects in
other areas.
 
     In 1996, the Partnership incurred $12,615,000 in direct property additions
and exploration and development costs, and approximately $441,000 for the
purchase of HCRC shares. The costs were comprised of approximately $9,467,000
for domestic exploration and development expenditures and approximately
$3,148,000 for property acquisitions. The Partnership's 1996 capital program led
to the replacement, through acquisitions and drilling, of 75% of the equivalent
barrels produced during 1996. Overall replacement, including revisions to prior
year reserves, was 145% of 1996 production.
 
     The Partnership's significant direct exploration and development
expenditures in 1996 included approximately $1,359,000 for the drilling of 17
wells, 15 of which were successful, and participation in nine recompletions, six
of which were successful, in the West Texas Kermit area; approximately $455,000
for 3-D seismic data and $172,000 for two exploratory wells, both of which were
dry, in Crane County, Texas; approximately $516,000 for 3-D seismic data and
related acreage and $184,000 for the drilling of eight wells, seven of which
were successful, in the Merkle Project area in Texas; approximately $334,000 for
the drilling of two nonoperated wells, one of which was successful, in North
Dakota; approximately $150,000 for an exploratory dry hole and approximately
$602,000 for an Interlake Formation development well in Montana which was
successful; approximately $505,000 for 11 recompletions and two drilled wells in
Reagan County, Texas, nine of which were successful; and approximately $225,000
for the recompletion of one well in Louisiana which was successful.
 
     Also in 1996, in the San Juan Basin of Colorado and New Mexico, the
Partnership, directly and through an affiliate, acquired interests in 38 coal
bed methane wells for $1,734,000. Nine recompletions, seven of which were
successful, were performed in this area during 1996 for a cost of approximately
$690,000, and numerous other facility projects were completed for approximately
$270,000. In 1996, the Partnership spent approximately $576,000 in New Mexico
for the recompletion of three wells, two of which were successful, and the
drilling of two wells, both of which were successful.
 
     During 1996, the Partnership received $1,285,000 from the sale of its
interests in the Hoople Field in Crosby County, Texas, $3,800,000 from the sale
of its interests in the Bethany Longstreet area of Louisiana and $198,000 from
the sale of various nonstrategic properties.
 
     The Partnership intends to place increased emphasis on exploration as a
source of future growth and has an active exploration program testing a wide
variety of reserve creation opportunities in its core areas of operations and in
select new areas. The Partnership will continue to consider international
projects in 1998, utilizing stringent screening criteria. If this Offering is
successfully completed, the Partnership intends to increase its capital budget
for 1998 by approximately $10 million over the budget for 1997, which increase
will allow the Partnership to participate in an increased number of projects. It
is not possible to predict the outcome of the Partnership's exploration
activities, and there can be no assurance that such projects will be successful.
The Partnership's past performance is not necessarily indicative of its
performance in the future.
 
                                       36
<PAGE>   42
 
DISTRIBUTIONS
 
     On January 19, 1996, the Partnership distributed to the Class A Unitholders
one new Class C Unit for every 15 Class A Units held as of the record date of
December 18, 1995. Pursuant to the regulations of the American Stock Exchange,
Class A Unitholders who sold their Units between December 14, 1995 and January
19, 1996 also sold their right to receive the associated Class C Unit dividend.
Class C Units were created to give the Partnership greater flexibility in
structuring future acquisitions by allowing the Partnership to issue a security
with a fixed distribution rate. Class C Units trade separately from the
Partnership's Class A Units. The Class C Units have a distribution preference of
$1.00 per year, payable quarterly, and distributions on the new units commenced
during the first quarter of 1996. During 1996, the Partnership made
distributions of $.52 per Class A Unit and $1.00 per Class C Unit to its
Unitholders. Through September 30, 1997, the Partnership made distributions of
$.39 per Class A Unit and $.75 per Class C Unit to its Unitholders.
 
UNIT OPTION PLAN
 
     On January 31, 1995, the board of directors of the General Partner approved
the adoption of the 1995 Unit Option Plan to be used for the motivation and
retention of directors, employees and consultants performing services for the
Partnership. The plan authorizes the issuance of options to purchase 425,000
Class A Units. Grants of options to purchase 425,000 Class A Units were made on
January 31, 1995, and all of these options are currently vested. The exercise
price of each option granted is $5.75 per Class A Unit, which was the closing
price of the Class A Units on January 30, 1995. No options have been exercised.
 
     During 1996, the Partnership adopted the disclosure provisions of Statement
of Financial Accounting Standards No. 123, "Accounting for Stock Based
Compensation" ("SFAS 123"). SFAS 123 requires entities to use the fair value
method to either account for, or disclose, stock based compensation in their
financial statements. Because the Partnership elected the disclosure provisions
of SFAS 123, the adoption of SFAS 123 did not have a material effect on the
financial position or results of operations of the Partnership.
 
FINANCING
 
     During the second quarter of 1997, HEP and its lenders amended and restated
HEP's Second Amended and Restated Credit Agreement (as amended, the "Credit
Agreement") to extend the term date of its line of credit to May 31, 1999. Under
the Credit Agreement and an Amended and Restated Note Purchase Agreement ("Note
Purchase Agreement") (collectively referred to as the "Credit Facilities"),
HEP's borrowing base is $51,000,000 at September 30, 1997. HEP had amounts
outstanding at September 30, 1997 of $27,700,000 under the Credit Agreement and
$4,286,000 under the Note Purchase Agreement. HEP's borrowing base is further
reduced by an outstanding contract settlement obligation of $2,690,000;
therefore, its unused borrowing base totaled $16,324,000 at September 30, 1997.
 
     Borrowings under the Note Purchase Agreement bear interest at an annual
rate of 11.85%, which is payable quarterly. Annual principal payments of
$4,286,000 began April 30, 1992, and the debt is required to be paid in full on
April 30, 1998. HEP intends to fund the payment due in April 1998 through
additional borrowings under the Credit Agreement; thus, no portion of HEP's Note
Purchase Agreement is classified as current as of September 30, 1997.
 
     Borrowings against the Credit Agreement bear interest at the lower of the
Certificate of Deposit rate plus from 1.375% to 1.875%, prime plus  1/2% or the
Euro-Dollar rate plus from 1.25% to 1.75%. The applicable interest rate was 7.2%
at September 30, 1997. Interest is payable monthly, and quarterly principal
payments of $1,874,125, as adjusted for the anticipated borrowings to fund the
Note Purchase Agreement payment due in April 1998, commence May 31, 1999.
 
     The borrowing base for the Credit Facilities is redetermined semiannually.
The Credit Facilities are secured by a first lien on approximately 80% of HEP's
oil and gas properties as determined by the lenders. Additionally, aggregate
distributions paid by HEP in any 12 month period are limited to 50% of cash flow
from operations before working capital changes plus 50% of distributions
received from affiliates, if the principal amount of debt of HEP is 50% or more
of the borrowing base. Aggregate distributions paid by HEP are
 
                                       37
<PAGE>   43
 
limited to 65% of cash flow from operations before working capital changes plus
65% of distributions received from affiliates if the principal amount of debt of
HEP is less than 50% of the borrowing base.
 
     HEP entered into contracts to hedge its interest rate payments on
$15,000,000 of its debt for each of 1997 and 1998 and $10,000,000 for each of
1999 and 2000. HEP does not use the hedges for trading purposes, but rather for
the purpose of providing a measure of predictability for a portion of HEP's
interest payments under its Credit Agreement, which has a floating interest
rate. In general, it is HEP's goal to hedge 50% of the principal amount of its
debt for the next two years and 25% for each year of the remaining term of the
debt. HEP has entered into four hedges, one of which is an interest rate collar
pursuant to which it pays a floor rate of 7.55% and a ceiling rate of 9.85%, and
the others are interest rate swaps with fixed rates ranging from 5.75% to 6.57%.
The amounts received or paid upon settlement of these transactions are
recognized as interest expense at the time the interest payments are due.
 
NATURAL GAS BALANCING
 
     The Partnership uses the sales method for recording its natural gas
balancing. Under this method, the Partnership recognizes revenue on all of its
sales of production, and any over-production or under-production is recovered or
repaid at a future date.
 
     As of December 31, 1996, the Partnership had a net over-produced position
of 166,000 Mcf ($372,000 valued at average annual natural gas prices). The
General Partner believes that this imbalance can be made up from production on
existing wells or from wells that will be drilled as offsets to existing wells
and that this imbalance will not have a material effect on the Partnership's
results of operations, liquidity and capital resources. The reserves disclosed
in Oil and Gas Reserves elsewhere in this Prospectus have been decreased by
166,000 Mcf in order to reflect the Partnership's gas balancing position.
 
CHANGING PRICES AND HEDGING
 
     Prices received for oil and gas production depend upon numerous factors
that are beyond the Partnership's control, including the extent of domestic and
foreign production, imports of foreign oil, market demand, domestic and
worldwide economic and political conditions, and government regulations and tax
laws. See "Risk Factors -- Risks Inherent in the Partnership's
Business -- Volatility of Oil and Gas Prices." Prices for both oil and gas have
fluctuated significantly from 1994 through 1996. The following table presents
the average prices received per year by the Partnership, and the effects of the
hedging transactions discussed below.
 
<TABLE>
<CAPTION>
                                          OIL                                   NATURAL GAS
                        ---------------------------------------   ---------------------------------------
                            (EXCLUDING           (INCLUDING           (EXCLUDING           (INCLUDING
                             EFFECTS              EFFECTS              EFFECTS              EFFECTS
                            OF HEDGING           OF HEDGING           OF HEDGING           OF HEDGING
                          TRANSACTIONS)        TRANSACTIONS)        TRANSACTIONS)        TRANSACTIONS)
                        ------------------   ------------------   ------------------   ------------------
                            (PER BBL)            (PER BBL)            (PER MCF)            (PER MCF)
<S>                     <C>                  <C>                  <C>                  <C>
First 9 months of 1997        $19.56               $19.20               $2.40                $2.22
  1996                         20.85                20.10                2.38                 2.24
  1995                         16.98                17.36                1.58                 1.82
  1994                         15.50                16.47                1.90                 1.97
</TABLE>
 
     The Partnership has entered into numerous financial contracts to hedge the
prices of its oil and gas. The purpose of the hedges is to provide protection
against price drops and to provide a measure of stability in the volatile
environment of oil and gas spot pricing.
 
                                       38
<PAGE>   44
 
     The following table provides a summary of the Partnership's financial
contracts at September 30, 1997:
 
<TABLE>
<CAPTION>
                                           OIL                    NATURAL GAS
                                 ------------------------   ------------------------
                                 PERCENT OF                 PERCENT OF
                                 PRODUCTION    CONTRACT     PRODUCTION    CONTRACT
       PERIOD                      HEDGED     FLOOR PRICE     HEDGED     FLOOR PRICE
- ---------------------            ----------   -----------   ----------   -----------
                                               (PER BBL)                  (PER MCF)
<C>                    <S>       <C>          <C>           <C>          <C>
Last 3 months of 1997               48%         $17.78         46%          $1.97
        1998                        26%         $17.12         46%          $2.04
        1999                         3%         $15.88         27%          $1.87
        2000                         0%                        16%          $2.01
</TABLE>
 
     Certain of the Partnership's financial contracts for oil are participating
hedges whereby the Partnership will receive the contract price if the posted
futures price is lower than the contract price, and will receive the contract
price plus between 25% and 75% of the difference between the contract price and
the posted futures price if the posted futures price is greater than the
contract price. Certain other of the Partnership's financial contracts for oil
are collar agreements whereby the Partnership will receive the contract price if
the spot price is lower than the contract price, the cap price if the spot price
is higher than the cap price, and the spot price if that price is between the
contract price and the cap price. The cap prices range from $17.50 to $19.35 per
Bbl.
 
     Certain of the Partnership's financial contracts for natural gas are collar
agreements whereby the Partnership will receive the contract price if the spot
price is lower than the contract price, the cap price if the spot price is
higher than the cap price, and the spot price if that price is between the
contract price and the cap price. The cap prices range from $2.78 to $2.93 per
Mcf.
 
     During the fourth quarter of 1997, the average oil price (for barrels not
hedged) was approximately $18.42 per Bbl, and the average price of natural gas
(for quantities not hedged) was approximately $2.78 per Mcf.
 
     During 1996, the Partnership adopted Statement of Financial Accounting
Standards No. 121 "Accounting for the Impairment of Long-Lived Assets and for
Long-Lived Assets to be Disposed Of" ("SFAS 121"). SFAS 121 provides the
standards for accounting for the impairment of various long-lived assets.
Substantially all of the Partnership's long-lived assets consist of oil and gas
properties accounted for using the full cost method of accounting, which
requires an impairment to be recorded when total capitalized costs exceed the
standardized measure of discounted future net cash flows from proved oil and gas
reserves. Therefore, the adoption of SFAS 121 did not have a material effect on
the financial position or results of operations of the Partnership.
 
INFLATION
 
     Inflation did not have a material impact on the Partnership in 1996 and is
not anticipated to have a material impact in 1997.
 
ISSUES RELATED TO THE YEAR 2000
 
     As the year 2000 approaches, there are uncertainties concerning whether
computer systems will properly recognize date-sensitive information when the
year changes to 2000. Systems that do not properly recognize such information
could generate erroneous data or fail.
 
     Because of the nature of the oil and gas industry and the necessity for the
Partnership to make reserve estimates and other plans well beyond the year 2000,
the Partnership's computer systems and software were already configured to
accommodate dates beyond the year 2000. The Partnership believes that the year
2000 will not pose significant operational problems for the Partnership's
computer systems. The Partnership has not yet completed its assessment of all of
its systems, or the computer systems of third parties with which it deals, and
it is not possible at this time to assess the effect of a third party's
inability to adequately address year 2000 issues.
 
                                       39
<PAGE>   45
 
ENVIRONMENTAL CONSIDERATIONS
 
     The exploration for, and development of, oil and gas involves the
extraction, production and transportation of materials which, under certain
conditions, can be hazardous or can cause environmental pollution problems. In
light of the current interest in environmental matters, the General Partner
cannot predict what effect possible future public or private action may have on
the business of HEP. HEP's historical environmental expenditures have not been
material and are not expected to be material in the future. The General Partner
is continually taking actions it believes are necessary in its operations to
ensure conformity with applicable federal, state and local environmental
regulations, and does not presently anticipate that the compliance with federal,
state and local environmental regulations will have a material adverse effect
upon capital expenditures, earnings, cash flows or the competitive position of
HEP in the oil and gas industry.
 
                            BUSINESS AND PROPERTIES
 
OVERVIEW
 
     Hallwood Energy Partners, L.P. explores for, develops, acquires and
produces oil and gas in the continental United States. The Partnership owns a
diversified portfolio of core producing properties located primarily in the
Greater Permian Region of Texas and Southeast New Mexico, the Gulf Coast Region
of Louisiana and Texas, and the Rocky Mountain Region. During 1996, the
Partnership's total production was 18.6 Bcfe, which consisted of 69% natural gas
and 31% crude oil. At December 31, 1996, the Partnership's estimated proved
reserves were 133.7 Bcfe, approximately two-thirds of which was natural gas,
with a standardized measure of discounted future net cash flows of $206 million.
The Partnership also holds a 46% interest in HCRC, a publicly traded (NMS:HCRC)
exploration and production corporation. As of January 30, 1998, the
Partnership's investment in HCRC had a market value of $24.0 million.
 
     HEP is organized as a limited partnership to achieve more tax efficient
pass through of cash flow to its partners. The Partnership utilizes operating
cash flow, first, to reinvest in operations to maintain reserves and production;
second, to make stable cash distributions to Unitholders; and third, to grow the
Partnership's reserve base over time. HEP has three classes of Units
outstanding, designated Classes A, B and C. Class C Units, the class of units
being offered by this Prospectus, represent preferred limited partner interests
and are traded on the American Stock Exchange (AMEX:HEPC). Class C Unitholders
are paid a preferred distribution of $1.00 per Class C Unit per year before
distributions are paid to other limited partners and are entitled to
preferential distributions upon liquidation of the Partnership. It is the
Partnership's intention to maintain the Class C distributions at $1.00 per Class
C Unit per year to the extent consistent with maintaining its reserve base and
production. At $11.00, the closing market price of the Class C Units on the AMEX
on January 30, 1998, the Class C Units had an indicated pre-tax yield of 9.1%.
Class A and Class B Units are entitled to distributions in the amount declared
from time to time by the General Partner. During 1997, Class A Unitholders
received distributions of $0.52 and Class B Unitholders received no
distributions. All three classes of Units vote as separate classes on all
matters submitted to Unitholders. The Partnership's Class A Units of limited
partner interest are also traded on the American Stock Exchange (AMEX:HEP).
 
     The Partnership has no employees. Management, technical and operational
services are provided by HPI, a subsidiary of the Partnership. At December 31,
1996, HPI operated on behalf of the Partnership over 1,000 wells, accounting for
approximately 89% of the Partnership's proved reserves. Management and employees
of HPI have extensive experience and expertise in operational, financial and
managerial aspects of the oil and gas industry. HPI's strengths include
conducting cost-efficient operations; geological and geophysical interpretation
and prospect generation; use of sophisticated land, legal, accounting and tax
systems; use of risk management tools, including price hedges, interest rate
swaps and joint ventures; and experience in making complex acquisitions on
favorable terms. In addition, financial incentive programs reward key operating
and field personnel for minimizing capital costs, operating costs, general and
administrative expenses and well downtime. In 1996, as a result of management's
emphasis on cost control, combined lease operating and general and
administrative costs were $.86 per Mcfe produced, with realized gross operating
margins of $1.73 per Mcfe.
 
                                       40
<PAGE>   46
 
     As operator, HPI is able to exert greater control over the cost and timing
of all field activities. HPI diligently manages the Partnership's producing
properties to maximize economic production over the life of the properties
through a combination of development well drilling, existing well recompletions
and workovers and enhanced recovery operations. The Partnership uses advanced
drilling technologies to minimize costs and frequently performs operational
reviews to minimize operating expenses.
 
     The Partnership has an active exploration program targeting a wide variety
of reserve creation opportunities. In its exploration and development projects,
geoscientists integrate 3-D seismic, 2-D seismic and all available subsurface
well control data on geologic and geophysical interpretation workstations.
Exploration activities over the last three years have been rapidly expanding.
The Partnership has increased its gross undeveloped acreage from 47,973 acres at
December 31, 1993 to approximately 284,000 acres at December 31, 1997, and its
3-D seismic data from 0 to 350 square miles. Substantially all of the
undeveloped acreage is the subject of active exploration efforts. Additional
undeveloped acreage is regularly added as existing exploration plays are
expanded and new plays are pursued.
 
     The Partnership continually evaluates acquisition opportunities and may
increase its total annual capital expenditures depending upon its success in
identifying and completing attractive acquisitions. Management believes that its
expertise in legal and financial matters gives it a competitive advantage over
other independents in undertaking and completing complex acquisitions.
 
     Reserves added from exploration, development and acquisitions over the
three years ended 1996, including revisions, total 73,700 Mmcfe, which
represents 130% of production for the same period. The Partnership spent $44.9
million on these capital projects which represents a finding cost of $.61 per
Mcfe, which compares to an industry-wide weighted average domestic reserve
replacement cost from all sources for independent oil and gas companies for the
same period of $.82 Mcfe as reported by Arthur Andersen in its eighteenth annual
survey of oil and gas exploration and production companies: Oil and Gas Reserve
Disclosures (1997). In 1997, the Partnership expects to incur approximately
$15.5 million of expenditures on 115 drilling and recompletion projects. As of
September 30, 1997, 63 projects had been performed, of which 39 were successful.
 
     Over the last three years the Partnership has undertaken approximately 400
development and exploration wells, recompletions and workover projects and
completed numerous acquisitions. As a result of these activities, including
revisions, the Partnership has replaced 145%, 132% and 116% of its production,
at an average cost of $.50, $.71, and $.64 per Mcfe for 1996, 1995, and 1994,
respectively. From January 1, 1996 through December 31, 1997, the Partnership
had a 56% success rate on its drilling, workovers and recompletions. For
purposes of this determination the Partnership has classified a well as
successful if production casing has been run for a completion attempt on the
well.
 
     The evaluation of the Partnership's activities during 1997 and its reserves
at December 31, 1997 has not been completed. However, management currently
estimates that at December 31, 1997, the standardized measure of discounted
future net cash flows of the Partnership's reserves was approximately $129.4
million and that, for 1997 the Partnership's reserve replacement from all
activities, including revisions, equaled 63% of its 1997 production, using
December 31, 1997 prices of $16.90 per barrel of oil and $2.30 per mcf of gas.
The expected future production from certain of the Partnership's wells in West
Texas is more sensitive to fluctuations in oil prices. If December 31, 1997
prices had been equal to the weighted average prices the Partnership has
received for the five years ended December 31, 1997, or $18.44 per barrel of oil
and $1.87 per mcf of gas, management estimates that the Partnership's reserve
replacement from all activities, including revisions, would have equaled 128% of
its 1997 production.
 
     The Partnership's future growth will be driven by a combination of
development of existing projects, exploration for new reserves and select
acquisitions. The proceeds of the Offering will be utilized by the Partnership
in 1998 to accelerate the drilling of a portion of its current project inventory
which includes an estimated 67 development well and workover locations, 54 wells
and workovers that may be undertaken depending on the results of future
evaluations and 50 exploration locations, which, if successful, could lead to
additional opportunities.
 
                                       41
<PAGE>   47
 
BUSINESS STRATEGY
 
     The Partnership's objective is to provide an attractive return to
Unitholders through a combination of cash distributions and capital
appreciation. The following are key strategic elements utilized to achieve that
objective.
 
     ACCELERATION OF DEVELOPMENT OF EXISTING PROPERTY BASE. The Partnership
intends to use all of the proceeds from the Offering to accelerate development
and production from its existing inventory of drilling locations. The
Partnership believes its existing development and workover projects offer
meaningful reserve addition opportunities and provide a base for generating
future cash flow, even without exploration or acquisition successes.
 
     EXPLORATION FOR NEW RESERVES. The Partnership is placing increasing
emphasis on exploration as a source of future growth and has an active
exploration program targeting a wide variety of reserve creation opportunities
in its core areas of operations and in select new areas. The Partnership pursues
a balanced portfolio of exploration prospects where it believes multiple
additional new reserve opportunities could result if a significant discovery
were made. At December 31, 1997, the Partnership had approximately 284,000 gross
(77,000 net) undeveloped acres on which it was actively conducting exploration
activities.
 
     The Partnership's exploration team includes seven geoscientists and
technicians who have developed in-depth knowledge and expertise in each of the
Partnership's core operating areas and related exploration projects areas. Joint
venture and contract technical personnel and consultants who have demonstrated
experience and expertise in select areas of interest to the Partnership provide
supplemental support as needed. The technical staff uses in-house 3-D seismic
and software as well as other modern techniques in its exploration effort.
 
     UTILIZATION OF RISK MANAGEMENT TECHNIQUES. The Partnership uses a variety
of techniques to reduce its exposure to the risks involved in its oil and gas
activities. The Partnership conducts operations in distinct geographic areas to
gain diversification benefits from geologic settings, local commodity price
differences and local operating characteristics. The Partnership seeks to reduce
risks normally associated with exploration through the use of advanced
technologies, such as 3-D seismic surveys, by spreading projects over various
geologic settings and geographic areas, by balancing exposure to crude oil and
natural gas projects, by balancing potential rewards against evaluated risks and
by participating in projects with other experienced industry partners at working
interest levels appropriate for the Partnership. The Partnership seeks to reduce
its exposure to short-term fluctuations in the price of oil and natural gas and
interest rates by entering into various hedging arrangements.
 
     MAINTAIN LOW-COST OPERATING STRUCTURE. One of the Partnership's strengths
is its ability to implement and maintain a low-cost operating structure, through
its affiliate HPI. As operator, HPI manages all field activities and thereby
exercises greater control over the cost and timing of exploration, drilling and
development activities in order to help improve project returns. The Partnership
focuses on reducing lease operating expenses (on a per unit of production
basis), general and administrative expenses and drilling and recompletion costs
in order to improve project returns.
 
     ACQUISITION OF SELECT PROPERTIES. The Partnership actively seeks to acquire
oil and gas properties that are either complementary to existing production
operations or that it believes will provide significant exploration
opportunities beyond any proved reserves acquired. The Partnership has assembled
an experienced management team which employs a comprehensive interdisciplinary
approach encompassing technical, financial, legal and strategic considerations
in evaluating potential acquisitions of oil and gas properties. The
Partnership's average reserve acquisition cost was $.76 per Mcfe for the three
years ended December 31, 1996.
 
     UTILIZE STRENGTHS OF PERSONNEL. The Partnership utilizes qualified and
experienced lease operators, field supervisors, engineers, landmen, accountants
and other personnel assigned to specific core areas of operation. Substantially
all of the staff have over 10 years experience in their fields, and most have
been employed by the Partnership's subsidiary, HPI, for more than 10 years. All
personnel have access to and use modern information systems, operating
technologies and equipment to help maximize production and reliability of the
Partnership's operations while minimizing costs.
                                       42
<PAGE>   48
 
ORGANIZATION
 
     The general partner (the "General Partner") of the Partnership is HEPGP, a
Colorado limited partnership. The general partner of HEPGP is Hallwood G.P., a
Delaware corporation, which is a wholly owned subsidiary of Hallwood Group. For
purposes of this Prospectus, unless otherwise indicated, references to the
General Partner include Hallwood G.P.
 
     The Partnership's activities are conducted through the two Operating
Partnerships. HEP is the sole limited partner and HEPGP is the sole general
partner of each of the Operating Partnerships. Solely for purposes of simplicity
in this Prospectus, unless otherwise indicated, all references to the
Partnership in connection with the ownership, exploration, development or
production of oil and gas properties include the Operating Partnerships.
 
     The majority of the Partnership's oil and gas properties are managed and
operated by HPI, a subsidiary of the Partnership. Since neither the Partnership
nor the General Partner has any employees, HPI performs all operations on behalf
of the Partnership. In its capacity as manager and operator, HPI pays all costs
and expenses of operations and distributes all net revenues associated with the
Partnership's properties. The Partnership reimburses HPI for its actual cost for
direct and indirect expenses incurred by HPI for the benefit of the Partnership
and its properties. The indirect expenses for which HPI is reimbursed include
employee compensation, office rent, office supplies and employee benefits. HPI
does not receive any fees for its services.
 
     HPI generally allocates its expenses among the Partnership and its
affiliates by multiplying the aggregate amount of the indirect expenses incurred
by HPI by the estimated time that the employees of HPI spend on managing the
Partnership and dividing by the aggregate time that the employees of HPI spend
on all the entities that HPI manages. Certain components of employee
compensation payable by the Partnership take into account the Partnership's
performance and its ownership interest in certain wells.
 
     The Partnership owns 46% of the common stock of its affiliate HCRC, a
publicly traded Delaware corporation. HCRC owns 19% of the publicly traded Units
of the Partnership. HPI also performs all operations on behalf of HCRC.
 
RESERVES AND PRODUCTION BY SIGNIFICANT REGIONS AND FIELDS
 
     The following table presents the December 31, 1996 proved reserve data and
the standardized measure of discounted net future cash flows of the Partnership
by significant regions.
 
<TABLE>
<CAPTION>
                                                                  STANDARDIZED MEASURE OF
                                PROVED RESERVE QUANTITIES     DISCOUNTED FUTURE NET CASH FLOWS
                                --------------------------   ----------------------------------
                                                               PROVED       PROVED
                                NATURAL GAS    BBLS OF OIL   UNDEVELOPED   DEVELOPED    TOTAL
                                -----------    -----------   -----------   ---------   --------
                                  (MMCF)         (MBBLS)           (DOLLARS IN THOUSANDS)
<S>                             <C>            <C>           <C>           <C>         <C>
Greater Permian Region            26,477          5,395        $3,871      $ 63,948    $ 67,819
Gulf Coast Region                 28,407            728         1,929        81,378      83,307
Rocky Mountain Region             30,811            760           500        46,992      47,492
Other                              2,847            648           353         7,029       7,382
                                  ------          -----        ------      --------    --------
                                  88,542          7,531        $6,653      $199,347    $206,000
                                  ======          =====        ======      ========    ========
</TABLE>
 
                                       43
<PAGE>   49
 
     The following table presents the oil and gas production for significant
regions for the periods indicated.
 
<TABLE>
<CAPTION>
                                    PRODUCTION FOR THE                 PRODUCTION FOR THE
                               YEAR ENDED DECEMBER 31, 1996       YEAR ENDED DECEMBER 31, 1995
                               -----------------------------      -----------------------------
                               NATURAL GAS       BBLS OF OIL      NATURAL GAS       BBLS OF OIL
                               -----------       -----------      -----------       -----------
                                 (MMCF)            (MBBLS)          (MMCF)            (MBBLS)
<S>                            <C>               <C>              <C>               <C>
Greater Permian Region            2,792              512             2,907              511
Gulf Coast Region                 6,015              239             6,109              244
Rocky Mountain Region             3,394              137             3,204              146
Other                               585               84               815               92
                                 ------              ---            ------              ---
                                 12,786              972            13,035              993
                                 ======              ===            ======              ===
</TABLE>
 
     The following table presents the Partnership's reserves added through
extensions and discoveries by significant regions.
 
<TABLE>
<CAPTION>
                                           FOR THE YEAR ENDED             FOR THE YEAR ENDED
                                            DECEMBER 31, 1996              DECEMBER 31, 1995
                                        -------------------------      -------------------------
                                        NATURAL GAS   BBLS OF OIL      NATURAL GAS   BBLS OF OIL
                                        -----------   -----------      -----------   -----------
                                          (MMCF)        (MBBLS)          (MMCF)        (MBBLS)
<S>                                     <C>           <C>              <C>           <C>
Greater Permian Region                       704          422             3,992         1,494
Gulf Coast Region                            176           15               582            28
Rocky Mountain Region                        670           28             1,404           361
Other                                        133           19                19            19
                                           -----          ---             -----         -----
                                           1,683          484             5,997         1,902
                                           =====          ===             =====         =====
</TABLE>
 
     A description of the Partnership's properties by region follows:
 
Greater Permian Region
 
     The Partnership has significant interests in the following groups of
properties located in the Greater Permian Region in Texas and Southeast New
Mexico.
 
     CARLSBAD/CATCLAW AREA. The Partnership's interests in the Carlsbad/Catclaw
Area as of December 31, 1996 consisted of 60 producing wells that produce
primarily natural gas and are located on the northwestern edge of the Delaware
Basin in Lea, Eddy and Chaves Counties, New Mexico. HPI operates 38 of these
wells. The wells produce at depths ranging from approximately 2,500 feet to
14,000 feet from the Delaware, Atoka, Bone Springs and Morrow formations. The
Partnership has been active in this area since 1990 and participated in the
drilling or recompletion of 66 wells, 52 of which were successful through
December 31, 1996. The Partnership's working interest averages 39% in this area.
The Partnership's standardized measure of discounted future net cash flows from
this area at December 31, 1996 was approximately $17.0 million.
 
     The Partnership spent $870,000 through November 30, 1997 drilling two
unsuccessful exploration wells in the Delaware formation at depths of 4,500 feet
and successfully recompleting two wells. Future plans include 7 additional
projects.
 
     CROSS ROADS/OASIS AREA. The Partnership's interest in the Cross Roads/Oasis
Area consists of 32 square miles of proprietary 3-D seismic data in Montague
County, Texas. HPI is the operator, and the Partnership has an average 12.5%
working interest in this area. The Partnership's primary focus in this area is
the Atoka Bend Conglomerate formations at depths of approximately 6,000 to 7,000
feet. The Partnership has future plans to drill three exploration wells.
Additional projects may be pursued if the exploration wells are successful.
 
     EAST KEYSTONE AREA. The Partnership's interest in East Keystone Area as of
December 31, 1996 consisted of 48 producing wells, 33 of which are operated by
HPI, in Winkler County, Texas. The primary
 
                                       44
<PAGE>   50
 
focus of this area is the development of the Holt and San Andreas formations at
a depth of 5,100 feet. The Partnership became active in this area in 1993 and
has participated in the drilling or recompletion of approximately 50 wells, 40
successfully, through 1996. The Partnership owns an average 35% working interest
in this area. The Partnership's standardized measure of discounted future cash
flows from this area at December 31, 1996 was approximately $11.9 million.
 
     Through November 30, 1997, the Partnership had 13 development projects,
nine of which were successful, at an approximate cost to the Partnership of
$369,000. The Partnership's future development plans include a total of five
projects for the East Keystone area.
 
     GARDEN CITY AREA. In 1996, the Partnership became active in the Garden City
Area in Glasscock County, Texas. This project included the acquisition and
processing of 66 square miles of nonproprietary 3-D seismic data and the
drilling of one successful exploratory well prior to the end of 1996. The
standardized measure of discounted future net cash flows from this area at
December 31, 1996 was approximately $400,000. In 1997 HEP drilled a second
successful 10,000 foot delineation well and unsuccessfully reentered an
abandoned well for total costs to the Partnership of approximately $335,000. The
Partnership has future plans for two projects in this area.
 
     GRIFFIN AREA. Through November 30, 1997, the Partnership purchased an
interest in proprietary 3-D seismic data and selected acreage within an 85
square mile area in Texas for approximately $461,000. The Partnership has
developed a number of prospects in this project area which it plans to pursue.
Through November 30, 1997 the Partnership has drilled two exploratory wells, for
approximately $391,000, one of which was successful. Future plans include a
total of nine projects with additional potential projects contingent upon the
success of the planned projects.
 
     MERKLE AREA. The Partnership's nonoperated interest in the Merkle Area
includes 10 square miles of proprietary seismic data in Jones, Nolan and Taylor
Counties, Texas which was acquired in 1995. The seismic data has led to the
drilling of eight wells through December 31, 1996, seven of which were
successful. The Partnership's focus in this area is exploration of the Canyon,
Strawn and Ellenberger formations at depths of 3,500 to 6,500 feet. The
Partnership owns a 12.5% working interest in this area that is operated by a
third party. The standardized measure of discounted future net cash flows from
this area at December 31, 1996 was approximately $.9 million. Through November
30, 1997, the Partnership participated in the drilling of three development and
four exploration wells at an approximate cost to the Partnership of $175,000.
Four of the wells were successful.
 
     Based on its success in the nonoperated Merkle Area, the Partnership
acquired 74 additional miles of proprietary 3-D seismic data adjacent to the
nonoperated area. The Partnership has drilled five successful and five
unsuccessful exploration wells through November 30, 1997 at a cost to the
Partnership of approximately $592,000. The Partnership owns an average 25%
working interest in these wells, all of which HPI operates.
 
     The Partnership's future plans for the entire Merkle Area include drilling
25 exploration wells with additional exploratory locations possible, contingent
upon continued exploration success.
 
     SPRABERRY AREA. The Partnership's interests in the Spraberry Area as of
December 31, 1996 consisted of 363 producing wells, nine salt water disposal
wells and 24 shut-in wells in Dawson, Upton, Reagan and Irion Counties, Texas.
HPI operates 387 of these wells. Most of the current production from the wells
is from the Upper and Lower Spraberry, Clearfork Canyon, Dean and Fusselman
formations at depths ranging from 5,000 feet to 9,000 feet. From 1989 through
1996 the Partnership has drilled or recompleted approximately 130 wells, 114
successfully. The Partnership owns an average 45% working interest in this area.
The Partnership's standardized measure of discounted future net cash flows from
this area at December 31, 1996 was approximately $39.2 million.
 
     Through November 30, 1997, the Partnership incurred approximately
$1,022,000 for drilling two unsuccessful exploration wells and nine development
wells, eight of which were successful. In July, the Partnership acquired
additional interests in 34 of its existing wells at a cost of approximately
$507,000.
 
                                       45
<PAGE>   51
 
     The Partnership's future plans for the Spraberry Area include 20
development wells and workovers and additional projects contingent upon future
evaluation.
 
Gulf Coast Region
 
     The Partnership has significant interests in the Gulf Coast Region in
Louisiana and South and East Texas. The Partnership's most significant interest
in the Gulf Coast Region at December 31, 1996 consisted of 10 producing natural
gas wells, one shut-in natural gas well and six salt water disposal wells
located in Lafayette Parish, Louisiana. The wells produce principally from the
Bol Mex formations at 13,500 to 14,500 feet and are operated by HPI. From 1989
through 1996 the Partnership drilled or recompleted 15 wells in this area,
eleven of which were successful. The two most significant wells in the area are
the A.L. Boudreaux #1 and the G.S. Boudreaux Estate #1, which currently provides
approximately 19% of the Partnership's total production. The Partnership owns an
average 22% working interest in the area. The Partnership's standardized measure
of discounted future net cash flows from this area at December 31, 1996 was
approximately $66.7 million.
 
     Through November 30, 1997, the Partnership incurred approximately $2.9
million of costs in this area. The expenditures consisted of drilling five
successful development wells, three exploration wells, none of which were
successful, tubing repairs, additional perforations, workovers and acreage
acquisitions.
 
     BISON AREA. This project is a structural gas play for the Marg Tex and Bol
Mex Formations at approximate depths of 9,000 and 13,000 feet. This is a 3-D
defined structure which is very large and is centered under an existing HPI well
in the Gulf Coast Region. The Partnership has a 2.5% working interest in this
project, which is nonoperated.
 
     BOCA CHICA AREA. The Partnership plans to participate in a 10,000 foot
Bigneneria Humblei Formation gas well test defined by 2-D proprietary seismic
data. This well will be drilled directionally from the shore to a bottom hole
location one mile under the waters of the Gulf of Mexico. The Partnership has a
12.5% working interest in this project.
 
Rocky Mountain Region
 
     The Partnership has significant interests in the following groups of
properties located in Colorado, Montana, North Dakota, Northwest New Mexico and
Wyoming.
 
     BEAR GULCH AREA. The Partnership plans to drill a test well in 1998 in the
Bear Gulch Area in Campbell County, Wyoming. The project will be operated by HPI
and the Partnership has a 21% interest in it. If the test well is successful,
additional development wells could be drilled.
 
     DOUGLAS ARCH AREA. The Partnership's interest in this area at December 31,
1996 consisted of 47 producing wells in Garfield County, Colorado and Summit
County, Utah, 39 of which are operated by HPI. Ten wells produce from the Dakota
formation at depths of approximately 4,000 to 6,000 feet. From 1993 through
1996, the Partnership participated in 10 projects in this area, five of which
were successful. The Partnership's working interest in the area averages 12%.
The Partnership's standardized measure of discounted future net cash flows from
this area at December 31, 1996 was approximately $5.0 million. The Partnership
plans sixteen projects in this area with additional locations contingent upon
the success of these planned projects.
 
     HUDSON RANCH AREA. The Hudson Ranch Area is in Golden Valley County, North
Dakota. The Partnership will participate in a 30 square mile proprietary 3-D
seismic acquisition program in early 1998. The Partnership's primary focus in
this area is the development of the Mission Canyon, Lodgepole, Nisku and
Interlake formations at depths ranging from 9,000 feet to 12,000 feet. The
Partnership has incurred $335,000 through November 30, 1997 for seismic and
leasehold costs. Successful results of the seismic program could lead to the
drilling of up to eight exploratory wells, which if successful could lead to
potential future locations.
 
     SAN JUAN BASIN. The Partnership's interest in the San Juan Basin as of
December 31, 1996 consisted of 92 producing natural gas wells located in San
Juan County, New Mexico and La Plata County, Colorado. HPI
 
                                       46
<PAGE>   52
 
operates 54 wells in New Mexico, 34 of which produce from the Fruitland Coal
formation at approximately 2,200 feet and 20 of which produce from the Pictured
Cliffs, Mesa Verde and Dakota formations at 1,200 to 7,000 feet. The Partnership
has been active in the New Mexico portion of the basin since 1990, and has
drilled or recompleted 40 wells, 35 of which were successful, through December
31, 1996.
 
     In 1996, the Partnership participated in the acquisition of interests in 38
producing natural gas wells in La Plata County, Colorado and Rio Arriba County,
New Mexico from a subsidiary of Public Service Company of Colorado. Thirty-four
of the wells were assigned to a special purpose entity owned by a large east
coast financial institution. The wells produce from the Fruitland Coal formation
at approximately 3,200 feet. In connection with the acquisition, the Partnership
monetized the Section 29 tax credits generated by the wells. The project was
financed through a third party lender using a production payment structure. In
1996, the Partnership recompleted 10 of the wells, seven successfully. Through
November 30, 1997 four successful recompletions have been performed. The
Partnership's standardized measure of discounted future net cash flows from this
area at December 31, 1996 was approximately $7.2 million.
 
     Future plans for the San Juan Basin include a total of 12 projects. If
field rules were changed in the future to allow downspacing, the Partnership
would have additional potential well locations.
 
     TOOLE COUNTY AREA. The Partnership's interest in the Toole County Area as
of December 31, 1996 consisted of 85 wells, 43 of which are operated by HPI, in
Toole County, Montana. The oil wells produce from the Nisku formation at depths
of approximately 3,000 feet and the natural gas wells produce from the Bow
Island formation at depths of 900 to 1,200 feet. The Partnership became active
in this area in 1993 when it acquired these properties. From 1993 through 1996,
the Partnership drilled a total of six wells, four of which were successful. The
Partnership's working interest in the area averages 26%. The Partnership's
standardized measure of discounted future net cash flows from this area at
December 31, 1996 was approximately $2.6 million. Through November 30, 1997 the
Partnership successfully reentered and horizontally sidetracked one well at an
approximate cost to the Partnership of $153,000. The Partnership has future
plans for 22 development wells and workovers in this area.
 
     WEST SIOUX PASS AREA. The Partnership has participated in a project
involving a deep Red River prospect, defined by existing non-proprietary 3-D
seismic data from another Montana project the Partnership participated in. The
Partnership will have an 11% interest in this project and plans to drill one
exploratory well in the future. If successful, additional wells could be
drilled.
 
Other
 
     KANSAS AREA. The Partnership's interest in the Kansas Area as of December
31, 1996 consisted of 223 producing wells, of which 213 are operated by HPI and
10 are operated by unaffiliated entities. The wells are located in 15 counties
primarily in the Central Kansas Uplift and produce principally from the Arbuckle
and numerous Lansing-Kansas City formation zones from 3,000 feet to 6,500 feet.
The Partnership owns an average 25% working interest in the area. The
Partnership's standardized measure of discounted future net cash flows from this
area at December 31, 1996 was approximately $4.2 million. The Partnership has 15
projects planned for this area in the future.
 
     SACRAMENTO AREA. The Partnership has an interest in proprietary 3-D seismic
data in Yolo County, California targeting the 5,000 to 8,000 foot deep sands in
the Sacramento Valley Province of Northern California. The Partnership has a
7.5% nonoperated working interest in the project. Through November 30, 1997, two
successful wells were drilled. Future plans include five exploration wells with
the potential of additional wells if successful.
 
     STEALTH AREA. The Partnership entered into a project with Texaco to explore
for deep Springer, Hutton and Viola Formations at maximum depths of
approximately 19,000 feet in the Ardmore Basin in Carter County, Oklahoma. The
Partnership has a 5% working interest in this project. Through November 30,
1997, one well was drilled at an approximate cost to the Partnership of
$227,000, and the Partnership incurred an additional $125,000 for land costs.
The well is currently being tested. Positive test results could lead to
additional locations in the future.
 
                                       47
<PAGE>   53
 
Oil and Gas Reserves
 
     The following reserve quantity and future net cash flow information for the
Partnership represents proved reserves that are located in the United States.
The reserves have been estimated by HPI's in-house engineers. Approximately 75%
in value of these reserves have been reviewed by Williamson Petroleum
Consultants, Inc., independent petroleum engineers. The determination of oil and
gas reserves is based on estimates that are highly complex and interpretive. The
estimates are subject to continuing change as additional information becomes
available.
 
     The standardized measure of discounted future net cash flows is calculated
with no consideration given to future income taxes because the Partnership is
not a taxpaying entity. Under the guidelines set forth by the SEC, the
calculation is performed using year end prices held constant (unless a contract
provides otherwise) and is based on a 10% discount rate. At December 31, 1996,
oil and gas prices averaged $24.18 per Bbl of oil and $3.76 per Mcf of gas for
the Partnership. The prices of oil and gas at December 31, 1996 were
substantially higher than the prices used in the previous years to estimate net
proved reserves and future net revenues and substantially higher than oil and
gas prices at December 31, 1997. Future production costs are based on year end
costs and include severance taxes. The reserve calculations using these December
31, 1996 prices result in 7.5 million Bbls of oil, 88.5 Bcf of natural gas and a
standardized measure of discounted future net cash flows of $206 million. At
December 31, 1996, the portion of the reserves attributable to the General
Partner's interest totaled 300,000 Bbls of oil and 6 Bcf of natural gas with a
standardized measure of discounted future net cash flows of $16 million, which
amounts are included in the Partnership's reserves shown in the table below.
This standardized measure of discounted future net cash flows is not necessarily
representative of the market value of the Partnership's properties. See "Risk
Factors -- Risks Inherent in the Partnership's Business -- Volatility of Oil and
Gas Prices."
 
     There are numerous uncertainties inherent in estimating oil and gas
reserves and their estimated values, including many factors beyond the
Partnership's control. The reserve data set forth in this Prospectus represents
only estimates. Although the Partnership believes the reserve estimates
contained in this Prospectus are reasonable, reserve estimates are imprecise and
are expected to change as additional information becomes available.
 
     Reservoir engineering is a subjective process of estimating underground
accumulation of oil and gas that cannot be measured in an exact manner.
Estimates of economically recoverable oil and gas reserves and of future net
cash flows necessarily depend upon a number of variable factors and assumptions,
such as historical production from the area compared with production from other
producing areas, the assumed effects of regulations by governmental agencies and
assumptions concerning future oil and gas prices, future operating costs,
severance and excise taxes, development costs and workover and remedial costs,
all of which may in fact vary considerably from actual results. For these
reasons, estimates of the economically recoverable quantities of oil and gas
attributable to any particular group of properties, classifications of such
reserves based on risk of recovery, and estimates of the future net cash flows
expected therefrom prepared by different engineers, or by the same engineers but
at different times, may vary substantially and such reserve estimates may be
subject to downward or upward adjustment based upon such factors. Actual
production, revenues and expenditures with respect to the Partnership's reserves
will likely vary from estimates, and such variances may be material.
 
                                       48
<PAGE>   54
 
     The following table summarizes the Partnership's proved reserves, the
estimated future net revenues from such proved reserves and the standardized
measure of discounted future net cash flows attributable thereto at December 31,
1996, 1995 and 1994:
 
<TABLE>
<CAPTION>
                                                     AT DECEMBER 31,(1)
                                       ----------------------------------------------
                                          1996              1995              1994
                                       ----------        ----------        ----------
                                             (DOLLARS IN THOUSANDS, EXCEPT FOR
                                               WEIGHTED AVERAGE SALES PRICES)
<S>                                    <C>               <C>               <C>
Proved reserves:
  Oil (Mbbl)                                7,531             8,098             6,738
  Natural gas (Mmcf)                       88,542            83,112            85,585
          Total (Mmcfe)                   133,728           131,700           126,013
  Estimated future net cash flows(2)   $  334,000        $  187,000        $  153,000
  Standardized measure of discounted
     future
     net cash flows(3)                 $  206,000        $  124,000        $  104,000
Proved developed reserves:
  Oil (Mbbl)                                7,056             7,444             6,166
  Natural gas (Mmcf)                       85,848            77,378            79,699
          Total (Mmcfe)                   128,184           122,042           116,695
  Estimated future net cash flows(3)   $  323,000        $  178,000        $  138,000
  Standardized measure of discounted
     future
     net cash flows(3)                 $  199,000        $  118,000        $   94,000
Weighted average sales prices(2):
  Oil (per Bbl)                        $    24.18        $    17.95        $    15.80
  Natural gas (per Mcf)                $     3.76        $     2.03        $     1.72
</TABLE>
 
- ---------------
 
(1) Excludes pro rata proved reserves attributable to the Partnership's 46%
    equity interest in HCRC. See "Business and Properties -- Investment in
    Hallwood Consolidated Resources Corporation."
 
(2) Includes the effects of hedging.
 
(3) The standardized measure of discounted future net cash flows prepared by the
    Partnership represents the present value (using an annual discount rate of
    10%) of estimated future net revenues from the production of proved
    reserves. No effect is given to income taxes as the Partnership is not a
    taxpayer. See the Supplemental Oil and Gas Reserve Information attached to
    the December 31, 1996 Consolidated Financial Statements of the Partnership
    included elsewhere in this Prospectus for additional information regarding
    the disclosure of the standardized measure information in accordance with
    the provisions of Statement of Financial Accounting Standards No. 69,
    "Disclosures about Oil and Gas Producing Activities."
 
                                       49
<PAGE>   55
 
VOLUMES, SALES PRICES AND OIL AND GAS PRODUCTION EXPENSE
 
     The following table sets forth certain information regarding the production
volumes and weighted average sales prices received for and average production
costs associated with the Partnership's sale of oil and gas for the periods
indicated.
 
<TABLE>
<CAPTION>
                                        FOR THE YEARS ENDED DECEMBER 31,(1)
                                      ---------------------------------------
                                        1996           1995           1994
                                      ---------      ---------      ---------
<S>                                   <C>            <C>            <C>
Production:
          Oil (Mbbl)                        972            993            939
          Natural gas (Mmcf)             12,786         13,035         13,208
          Total (Mmcfe)                  18,618         18,993         18,842
Weighted average sales price(2):
          Oil (per Bbl)               $   20.10      $   17.36      $   16.47
          Natural gas (per Mcf)       $    2.24      $    1.82      $    1.97
Production operating expense
          (per Mcfe)(3)               $    0.62      $    0.60      $    0.65
</TABLE>
 
- ---------------
 
(1) Excludes pro rata production attributable to the Partnership's 46% equity
    interest to HCRC. See "Business and Properties -- Investment in Hallwood
    Consolidated Resources Corporation."
 
(2) Includes the effects of hedging.
 
(3) Includes production taxes.
 
DEVELOPMENT, EXPLORATION AND ACQUISITION CAPITAL EXPENDITURES
 
     The following table sets forth certain information regarding the costs
incurred by the Partnership and its consolidated subsidiaries in the purchase of
proved and unproved properties and in its development and exploration
activities.
 
<TABLE>
<CAPTION>
                                                        FOR THE YEARS ENDED DECEMBER 31,(1)
                                                      ---------------------------------------
                                                        1996           1995           1994
                                                      ---------      ---------      ---------
                                                                  (IN THOUSANDS)
<S>                                                   <C>            <C>            <C>
Acquisition costs:
          Proved properties                           $   2,321      $   2,727      $   3,724
          Unproved prospects                                560            793            183
Development costs                                         9,587         11,880          4,995
Exploration costs                                           831          2,368          4,983
                                                      ---------      ---------      ---------
               Total costs incurred                   $  13,299      $  17,768      $  13,885
                                                      =========      =========      =========
</TABLE>
 
- ---------------
 
(1) Excludes pro rata costs attributable to the Partnership's 46% equity
    interest to HCRC. See "Business and Properties -- Investment in Hallwood
    Consolidated Resources Corporation."
 
PRODUCTIVE OIL AND GAS WELLS
 
     The following table summarizes the productive oil and gas wells as of
December 31, 1996 attributable to the Partnership's direct interests.
 
<TABLE>
<CAPTION>
                                                    GROSS        NET
                                                    -----        ---
<S>                                                 <C>          <C>
Productive Wells
          Oil                                        736         273
          Natural gas                                369         127
                                                    -----        ---
               Total                                1,105        400
                                                    =====        ===
</TABLE>
 
                                       50
<PAGE>   56
 
OIL AND GAS ACREAGE
 
     The following table sets forth the developed and undeveloped leasehold
acreage held directly by the Partnership as of December 31, 1996. Developed
acres are acres that are spaced or assignable to productive wells. Undeveloped
acres are acres on which wells have not been drilled or completed to a point
that would permit the production of commercial quantities of oil or gas,
regardless of whether or not such acreage contains proved reserves. Gross acres
are the total number of acres in which the Partnership has a working interest.
Net acres are the sum of the Partnership's fractional interests owned in the
gross acres.
 
<TABLE>
<CAPTION>
                                                  GROSS         NET
                                                 -------      -------
<S>                                              <C>          <C>
Developed acreage                                176,795       79,311
Undeveloped acreage                              130,618       50,103
                                                 -------      -------
            Total                                307,413      129,414
                                                 =======      =======
</TABLE>
 
     States in which the Partnership holds undeveloped acreage include Texas,
Louisiana, Montana, Wyoming, New Mexico, Kansas, Colorado, North Dakota and
Michigan.
 
DRILLING ACTIVITY
 
     The following table sets forth the number of wells attributable to the
Partnership's direct interest drilled in the most recent three years.
 
<TABLE>
<CAPTION>
                                                     YEAR ENDED DECEMBER 31,
                                      ------------------------------------------------------
                                           1996                1995                1994
                                      --------------      --------------      --------------
                                      GROSS     NET       GROSS     NET       GROSS     NET
                                      ------    ----      ------    ----      ------    ----
<S>                                   <C>       <C>       <C>       <C>       <C>       <C>
DEVELOPMENT WELLS:
     Productive                         29      6.6         66      28.0        30      14.6
     Dry                                 4       .9          2       .5          4        .7
                                        --      ---         --      ----        --      ----
          Total                         33      7.5         68      28.5        34      15.3
                                        ==      ===         ==      ====        ==      ====
EXPLORATORY WELLS:
     Productive                          2       .2          5       .6          2        .1
     Dry                                 4       .6          1       .9          6       1.2
                                        --      ---         --      ----        --      ----
          Total                          6       .8          6      1.5          8       1.3
                                        ==      ===         ==      ====        ==      ====
</TABLE>
 
MARKETING
 
     The oil and gas produced from the Partnership's properties has typically
been marketed through normal channels for such products. The Partnership
generally sells its oil at local field prices generally paid by the principal
purchasers of crude oil. The majority of the Partnership's natural gas
production is sold on the spot market, and is transported in intrastate and
interstate pipelines.
 
     Both oil and gas are purchased by refineries, major oil companies, public
utilities, industrial customers and other users and processors of petroleum
products. The Partnership is not confined to, nor dependent upon, any one
purchaser or small group of purchasers. Accordingly, the loss of a single
purchaser, or a few purchasers, would not materially affect the Partnership's
business because there are numerous purchasers in the areas in which the
Partnership sells its production. For the years ended December 31, 1996, 1995
and 1994, however, purchases by the following companies exceeded 10% of the
total oil and gas revenues of the Partnership:
 
<TABLE>
<CAPTION>
                                                1996        1995        1994
                                                ----        ----        ----
<S>                                             <C>         <C>         <C>
Conoco Inc.                                      28%         30%         23%
Marathon Petroleum Company                       11%         14%         12%
</TABLE>
 
                                       51
<PAGE>   57
 
     Factors, if they were to occur, which might adversely affect the
Partnership include decreases in oil and gas prices, the reduced availability of
a market for production, rising operational costs of producing oil and gas,
compliance with, and changes in, environmental control statutes and increasing
costs of transportation.
 
INVESTMENT IN HALLWOOD CONSOLIDATED RESOURCES CORPORATION
 
     The preceding information concerning the Partnership's oil and gas
reserves, production and costs does not include any data relating to HCRC, of
which the Partnership owns 46% of the common stock as of January 30, 1998. The
Partnership accounts for its interest in HCRC using the equity method of
accounting. The following information is intended to reflect the Partnership's
proportionate share of HCRC's operations. The Partnership does not have any
rights to any of HCRC's assets or any obligations to pay any of HCRC's
liabilities, and the information shown is for illustrative purposes only. At
January 30, 1998, the common stock of HCRC held by the Partnership had a market
value of $24.0 million, based on the closing sales price of the common stock on
the Nasdaq Stock Market on that date.
 
     The following table sets forth summary data with respect to the historical
production, estimated historical proved oil and gas reserves and estimated
future net cash flows attributable to the Partnership's 46% interest in the
common stock of HCRC.
 
<TABLE>
<CAPTION>
                                                                AS OF AND FOR THE PERIODS
                                                                   ENDED DECEMBER 31,
                                                              -----------------------------
                                                               1996       1995       1994
                                                              -------    -------    -------
                                                                 (DOLLARS IN THOUSANDS)
<S>                                                           <C>        <C>        <C>
Production:
            Oil (Mbbls).....................................      307        281        223
            Natural gas (Mmcf)..............................    2,822      2,634      2,237
            Total (Mmcfe)...................................    4,664      4,320      3,575
Net proved reserves (end of period):
            Oil (Mbbls).....................................    2,680      2,482      1,771
            Natural gas (Mmcf)..............................   22,786     15,782     14,548
            Total (Mmcfe)...................................   38,866     30,674     25,174
Net proved developed reserves (end of period):
            Oil (Mbbls).....................................    2,375      2,433      1,346
            Natural gas (Mmcf)..............................   22,160     14,507     13,433
            Total (Mmcfe)...................................   36,410     29,105     21,509
Estimated future net revenues before income taxes...........  $90,248    $41,131    $26,136
Present value of estimated future net revenues before income
  taxes.....................................................  $79,689    $39,735    $16,466
Standardized measure of discounted future net cash flows....  $47,701    $25,532    $16,466
</TABLE>
 
     The following table sets forth summary data with respect to HCRC's results
of operations for oil and gas activities attributable to the Partnership's 46%
interest in the common stock of HCRC.
 
<TABLE>
<CAPTION>
                                                           FOR THE YEARS ENDED DECEMBER 31,
                                                         ------------------------------------
                                                           1996          1995          1994
                                                         --------      --------      --------
                                                                    (IN THOUSANDS)
<S>                                                      <C>           <C>           <C>
Oil and gas revenue                                      $ 11,690      $  7,825      $  6,522
Production operating expense                               (3,790)       (2,894)       (3,008)
Depreciation, depletion, amortization and property
  impairment expense                                       (3,257)       (2,792)       (3,695)
Income tax benefit (expense)                                   23          (813)           73
                                                         --------      --------      --------
             Net income (loss) from oil and gas
               activities                                $  4,666      $  1,326      $   (108)
                                                         ========      ========      ========
</TABLE>
 
                                       52
<PAGE>   58
 
COMPETITION
 
     The Partnership encounters competition from other oil and gas companies in
all areas of its operations, including the acquisition of exploratory prospects
and proven properties. The Partnership's competitors include major integrated
oil and gas companies and numerous independent oil and gas companies,
individuals and drilling and income programs. Many of its competitors are large,
well-established companies with substantially larger operating staffs and
greater capital resources than the Partnership's and, in many instances, have
been engaged in the oil and gas business for a much longer time than the
Partnership. These companies may be able to pay more for exploratory prospects
and productive oil and gas properties and may be able to define, evaluate, bid
for and purchase a greater number of properties and prospects than the
Partnership's financial or human resources permit. The Partnership's ability to
explore for oil and gas prospects and to acquire additional properties in the
future will be dependent upon its ability to conduct its operations, to evaluate
and select suitable properties and to consummate transactions in a highly
competitive environment. See "Risk Factors -- Risks Inherent in the
Partnership's Business -- Competition."
 
REGULATION
 
     The availability of a ready market for oil and gas production depends upon
numerous factors beyond the Partnership's control. These factors include
regulation of oil and gas production, federal and state regulations governing
environmental quality and pollution control, state limits on allowable rates of
production by well or proration unit, the amount of oil and gas available for
sale, the availability of adequate pipeline and other transportation and
processing facilities, and the marketing of competitive fuels. For example, a
productive natural gas well may be "shut-in" because of an oversupply of natural
gas or lack of an available natural gas pipeline in the areas in which the
Partnership may conduct operations. State and federal regulations generally are
intended to prevent waste of oil and gas, protect rights to produce oil and gas
between owners in a common reservoir, control the amount of oil and gas produced
by assigning allowable rates of production, and control contamination of the
environment. Pipelines are subject to the jurisdiction of various federal, state
and local agencies. The following discussion summarizes the regulation of the
United States oil and gas industry. The Partnership believes that it is in
substantial compliance with these statutes, rules, regulations and governmental
orders, although there can be no assurance that this is or will remain the case.
The following discussion is not intended to constitute a complete discussion of
the various statutes, rules, regulations and governmental orders to which the
Partnership's operations may be subject.
 
  Regulation of Oil and Gas Exploration and Production
 
     The Partnership's operations are subject to various types of regulation at
the federal, state and local levels. Such regulation includes requiring permits
for the drilling of wells, maintaining bonding requirements in order to drill or
operate wells, and regulating the location of wells, the method of drilling and
casing wells, the surface use and restoration of properties upon which wells are
drilled, the plugging and abandoning of wells and the disposal of fluids used in
connection with operations. The Partnership's operations are also subject to
various conservation laws and regulations. These include the regulation of the
size of drilling and spacing units or proration units, the density of wells that
may be drilled, and the unitization or pooling of oil and gas properties. In
this regard, some states allow the forced pooling or integration of tracts to
facilitate exploration while other states rely primarily or exclusively on
voluntary pooling of lands and leases. In areas where pooling is voluntary, it
may be more difficult to form units, and therefore more difficult to develop a
project, if the operator owns less than 100% of the leasehold. In addition,
state conservation laws establish maximum rates of production from oil and
natural gas wells, generally prohibit the venting or flaring of natural gas, and
impose certain requirements regarding the ratability of production. The effect
of these regulations may limit the amount of oil and natural gas the Partnership
can produce from its wells and may limit the number of wells or the locations at
which the Partnership can drill. The regulatory burden on the oil and gas
industry increases the Partnership's costs of doing business and, consequently,
affects its profitability. Inasmuch as such laws and regulations are
periodically expanded, amended and reinterpreted, the Partnership is unable to
predict the future cost or impact of complying with such regulations.
 
                                       53
<PAGE>   59
 
  Federal Regulation of Sales and Transportation of Natural Gas
 
     Prior to January 1, 1993, the sale for resale of certain categories of
natural gas production was price regulated pursuant to the Natural Gas Act of
1938, the Natural Gas Policy Act of 1978 (the "NGPA") and the regulations
promulgated thereunder by the Federal Energy Regulatory Commission ("FERC"). In
1989, the Natural Gas Wellhead Decontrol Act was enacted. This act amended the
NGPA to remove both price and non-price controls from natural gas sold in "first
sales" as of January 1, 1993. While sales by producers of natural gas, such as
the Partnership, can currently be made at uncontrolled market prices, Congress
could reenact price controls in the future.
 
     The Partnership's sales of natural gas are affected by the availability,
terms and cost of transportation. The price and terms for access to pipeline
transportation remain subject to extensive federal and state regulation. Several
major regulatory changes have been implemented by Congress and the FERC from
1985 to the present that affect the economics of natural gas production,
transportation and sales. In addition, the FERC continues to promulgate
revisions to various aspects of the rules and regulations affecting those
segments of the natural gas industry, most notably interstate natural gas
transmission companies, that remain subject to the FERC's jurisdiction. These
initiatives may also affect the intrastate transportation of gas under certain
circumstances. The stated purpose of many of these regulatory changes is to
promote competition among the various sectors of the natural gas industry and
these initiatives generally reflect more light-handed regulation of the natural
gas industry. The ultimate impact of the complex rules and regulations issued by
the FERC since 1985 cannot be predicted. In addition, many aspects of these
regulatory developments have not become final but are still pending judicial and
FERC final decisions.
 
     The Partnership cannot predict what further action the FERC will take on
these matters; however, the Partnership does not believe that the effect of FERC
actions on it will be materially different than the effect on other natural gas
producers, gatherers and marketers with which the Partnership competes. The
natural gas industry historically has been very heavily regulated; therefore,
there is no assurance that the less stringent regulatory approach recently
pursued by the FERC and Congress will continue.
 
  Oil Price Controls and Transportation Rates
 
     Sales of crude oil, condensate and gas liquids by the Partnership are not
currently regulated and are made at market prices. The FERC has issued a series
of rules (Order Nos. 561 and 561-A) establishing an indexing system under which
oil pipelines will be able to change their transportation rates, subject to
prescribed ceiling levels. The indexing system, which allows or may require
pipelines to make rate changes to track changes in the Producer Price Index for
Finished Goods, minus one percent, became effective January 1, 1995. The FERC's
decision in this matter was recently affirmed by the Court. The Partnership is
not able at this time to predict the effects of Order Nos. 561 and 561-A, if
any, on the transportation costs associated with oil production from the
Partnership's oil producing operations; however, the Partnership does not
believe it will be affected by these orders materially differently than other
oil producers with which it competes.
 
  Environmental Regulations
 
     The Partnership's operations are subject to numerous laws and regulations
governing the discharge of materials into the environment or otherwise relating
to environmental protection. Public interest in the protection of the
environment has increased dramatically in recent years. The trend of more
expansive and stricter environmental legislation and regulations could continue.
To the extent laws are enacted or other governmental action is taken that
restricts drilling or imposes environmental protection requirements that result
in increased costs to the oil and gas industry in general, the business and
prospects of the Partnership could be adversely affected.
 
     The Partnership generates wastes, including hazardous wastes, that are
subject to the federal Resource Conservation and Recovery Act ("RCRA") and
comparable state statutes. The EPA and various state agencies have limited the
approved methods of disposal for certain hazardous and nonhazardous wastes.
Furthermore, certain wastes generated by the Partnership's oil and natural gas
operations that are currently
 
                                       54
<PAGE>   60
 
exempt from regulation as "hazardous wastes" may in the future be designated as
"hazardous wastes" and, therefore, be subject to more rigorous and costly
operating and disposal requirements.
 
     The Partnership currently owns or leases numerous properties that for many
years have been used for the exploration and production of oil and gas. Although
the Partnership believes that it has utilized good operating and waste disposal
practices, prior owners and operators of these properties may not have utilized
similar practices, and hydrocarbons or other wastes may have been disposed of or
released on or under the properties owned or leased by the Partnership or on or
under locations where such wastes have been taken for disposal. In addition,
many of these properties have been operated by third parties whose treatment and
disposal of hydrocarbons or other wastes was not under the Partnership's
control. These properties and the wastes disposed thereon may be subject to
CERCLA (as defined herein), RCRA and analogous state laws. Under such laws, the
Partnership could be required to remove or remedy previously disposed wastes
(including wastes disposed of or released by prior owners or operators) or
property contamination (including groundwater contamination) or to perform
remedial plugging operations to prevent future contamination.
 
     The Partnership's operations may be subject to the Federal Clean Air Act
("CAA") and comparable state and local requirements. Amendments to the CAA were
adopted in 1990 and contain provisions that may result in the gradual imposition
of certain pollution control requirements with respect to air emissions from the
operations of the Partnership. The EPA and states have been developing
regulations to implement these requirements. The Partnership may be required to
incur certain capital expenditures in the next several years for air pollution
control equipment in connection with maintaining or obtaining operating permits
and approvals addressing other air emission-related issues. However, the
Partnership does not believe its operations will be materially adversely
affected by any such requirements.
 
     Federal regulations require certain owners or operators of facilities that
store or otherwise handle oil, such as the Partnership, to prepare and implement
oil and hazardous substance spill prevention, control and countermeasure plans
relating to the possible discharge of oil into surface waters. The Oil Pollution
Act of 1990, as amended ("OPA"), contains numerous requirements relating to the
prevention of and response to oil spills into waters of the United States. The
OPA subjects owners of facilities to strict joint and several liability for all
containment and cleanup costs and certain other damages arising from a spill,
including, but not limited to, the costs of responding to a release of oil to
waters of the United States. The OPA also requires owners and operators of
offshore facilities that could be the source of an oil spill into waters of the
United States, including wetlands, to post a bond, letter of credit or other
form of financial assurance in an amount ranging from $35 million to as much as
$150 million, to cover costs that could be incurred by governmental authorities
in responding to an oil spill. In addition to OPA, other federal and state laws
for the control of water pollution also provide varying civil and criminal
penalties and liabilities in the case of releases of petroleum or its
derivatives into surface waters or into the ground. Regulations are currently
being developed under OPA and state laws concerning oil pollution prevention and
other matters that may impose additional regulatory burdens on the Partnership.
In addition, the Federal Clean Water Act ("CWA") and analogous state laws
require permits to be obtained to authorize discharge into surface waters or to
construct facilities in wetland areas. With respect to certain of its
operations, the Partnership is required to maintain such permits or meet general
permit requirements. The EPA also regulates discharges of storm water runoff.
This program requires covered facilities to obtain individual permits,
participate in a group permit or seek coverage under an EPA general permit. The
Partnership believes that it will be able to obtain, or be included under, such
permits, where necessary, with minor modifications to existing facilities and
operations that would not have a material effect on the Partnership.
 
     The Comprehensive Environmental Response, Compensation, and Liability Act
("CERCLA"), also known as the "Superfund" law, and similar state laws impose
liability, without regard to fault or the legality of the original conduct, on
certain classes of persons that are associated with a release of a "hazardous
substance" into the environment. These persons include the owner or operator of
the disposal site or sites where the release occurred and companies that
disposed or arranged for the disposal of the hazardous substances found at the
site. Persons who are or were responsible for releases of hazardous substances
under CERCLA may be subject to joint and several liability for the costs of
cleaning up the hazardous substances that have been released into the
environment and for damages to natural resources, and it is not uncommon for
 
                                       55
<PAGE>   61
 
neighboring landowners and other third parties to file claims for personal
injury and property damage allegedly caused by the hazardous substances released
into the environment.
 
     Management believes that the Partnership is in substantial compliance with
current applicable environmental laws and regulations and that continued
compliance with existing requirements will not have a material adverse effect on
the Partnership.
 
OPERATING HAZARDS AND INSURANCE
 
     The oil and gas business involves a variety of operating risks, including
the risk of fire, explosion, blow-out, pipe failure, casing collapse, abnormally
pressured formations and environmental hazards such as oil spills, gas leaks,
ruptures and discharges of toxic gases, the occurrence of any of which could
result in substantial losses to the Partnership due to injury or loss of life,
severe damage to or destruction of property, natural resources and equipment,
pollution or other environmental damage, cleanup responsibilities, regulatory
investigation and penalties and suspension of operations. As is common in the
oil and gas industry, the Partnership is not fully insured against the
occurrence of these events either because insurance is not available or because
the Partnership has elected not to insure against their occurrence because of
prohibitive premium costs. The occurrence of a significant event not fully
insured or indemnified against could materially and adversely affect the
Partnership's financial condition and results of operations.
 
TITLE TO PROPERTIES
 
     The Partnership believes it has satisfactory title to all of its producing
properties in accordance with standards generally accepted in the oil and gas
industry. The Partnership's properties are subject to customary royalty
interests, liens incident to operating agreements, liens for current taxes and
other burdens that the Partnership believes do not materially interfere with the
use of or affect the value of such properties. The Credit Facilities are secured
by 80% of all of the Partnership's oil and gas properties.
 
     The Partnership expects to make acquisitions of oil and gas properties from
time to time. In making an acquisition, the Partnership generally focuses most
of its title and valuation efforts on the more significant properties. As is
customary in the industry in the case of undeveloped properties, little
investigation of record title is made at the time of acquisition (other than a
preliminary review of local records). Investigations, including a title opinion
of local counsel, are generally made before commencement of drilling operations.
It is generally not feasible, however, for the Partnership to review in-depth
every property it purchases and all records with respect to such properties.
However, even an in-depth review of properties and records might not necessarily
reveal existing or potential problems, nor would it permit the Partnership to
become familiar enough with the properties to assess fully their deficiencies
and capabilities. Evaluation of future recoverable reserves of oil and gas,
which is an integral part of the property selection process, is a process that
depends upon evaluation of existing geological, engineering and production data,
some or all of which may prove to be unreliable or not indicative of future
performance. See "Risk Factors -- Risks Inherent in the Partnership's
Business -- Uncertainty of Reserve Information and Future Net Revenue
Estimates." To the extent the seller does not operate the properties, obtaining
access to properties and records may be more difficult. Even when problems are
identified, the seller may not be willing or financially able to give
contractual protection against such problems, and the Partnership may decide to
assume environmental and other liabilities in connection with acquired
properties. See "Risk Factors -- Risks Inherent in the Partnership's
Business -- Acquisition Risks."
 
EMPLOYEES
 
     The Partnership has no employees. At December 31, 1997, HPI had
approximately 120 employees, including five geologists/geophysicists and nine
engineers. The Partnership believes that HPI's relationships with its employees
are good. None of HPI's employees are covered by a collective bargaining
agreement. Field and on-site production operation services, such as pumping,
maintenance, dispatching, inspection and testing, are generally provided by
independent contractors.
 
                                       56
<PAGE>   62
 
LEGAL PROCEEDINGS
 
     Concise Oil and Gas Partnership ("Concise"), a wholly owned subsidiary of
the Partnership, is a defendant in a lawsuit styled Dr. Allen J. Ellender, Jr.
et al. vs. Goldking Production Company, et al., filed in the Thirty-Second
Judicial District Court, Terrebonne Parish, Louisiana on May 30, 1996. The
approximately 150 plaintiffs in this proceeding are seeking unspecified damages
for alleged breaches of certain oil, gas and mineral leases in the Northeast
Montegut Field, Terrebonne Parish, Louisiana. In addition, they are asking for
an accounting from Concise for production of natural gas for the period of time
from 1983 through November 1987. Specifically, as to the claims against Concise,
the suit alleges that Concise failed to obtain the prices to which it was
allegedly entitled for natural gas sold in this field in the 1980s under a long
term natural gas sales contract. The plaintiffs, royalty and overriding royalty
owners, allege that as a result of the alleged imprudent marketing practices,
they are entitled to their share of the prices which Concise should have
obtained. Plaintiffs have also sued approximately 35 other companies and
individuals, and allege that Concise is jointly and severally liable with the
rest of the defendants for the claims raised by the plaintiffs. The claims
raised against the other defendants are similar in substance to those raised
against Concise, but seek damages and an accounting for the period of time from
1983 until the present time. While the trial of this case is currently set for
August 1998, the trial date will most likely be continued beyond that date. The
outcome of this litigation cannot be predicted with certainty. However, the
Partnership believes that the claims asserted against Concise are without merit
and intends to vigorously defend against them.
 
     In addition to the litigation noted above, the Partnership and its
subsidiaries are from time to time subject to routine litigation and claims
incidental to their business, which the Partnership believes will be resolved
without material effect on the Partnership's financial position.
 
                                   MANAGEMENT
GENERAL
 
     The Partnership is a limited partnership managed by its General Partner,
and neither the Partnership nor the General Partner has any officers or
directors. The General Partner is HEPGP Ltd., a Colorado limited partnership.
The general partner of HEPGP is Hallwood G.P., a Delaware corporation, which is
a wholly owned subsidiary of Hallwood Group. Hallwood Group is the limited
partner of HEPGP. There are no commitments on the part of either Hallwood G.P.
or Hallwood Group, nor is it anticipated that either Hallwood G.P. or Hallwood
Group will fund potential future cash flow deficits or furnish any other direct
or indirect financial assistance to HEPGP. HEPGP became the General Partner of
the Partnership on November 26, 1996, after the former general partner of the
Partnership, Hallwood Energy Corporation ("HEC"), merged into Hallwood Group.
The principal duties and powers of the General Partner, which are performed by
employees of HPI acting on behalf of the General Partner, are arranging
financing for the Partnership, seeking out, negotiating and acquiring for the
Partnership suitable leases and other prospects, managing properties owned by
the Partnership, generally dealing for the Partnership with third parties and
attending to the general administration of the Partnership and its relations
with the limited partners.
 
DIRECTORS, OFFICERS AND KEY EMPLOYEES
 
     Neither the Partnership nor the General Partner has any employees. HPI
performs duties related to the management and operation of the Partnership,
including the operation of various properties in which the Partnership owns an
interest. Following are brief biographies of the directors, officers and key
employees of Hallwood G.P. and HPI.
 
     Anthony J. Gumbiner, 53, has served as a director and Chief Executive
Officer of Hallwood G.P. since March 1997. He was Chairman of the Board of HEC
from May 1984 until HEC's merger into Hallwood Group in November 1996. He was
Chief Executive Officer of HEC from February 1987 to November 1996. He has also
served as Chairman of the Board of Directors of Hallwood Group, a diversified
holding company with energy, real estate, textile products and hotel operations,
since 1981 and as Chief Executive Officer of Hallwood Group since April 1984.
Mr. Gumbiner has been a director and Chief Executive Officer of HCRC since
February 1992. Mr. Gumbiner has also served as Chairman of the Board of
Directors and as a director of Hallwood Holdings S.A., a Luxembourg real estate
investment company, since March 1984. He has been a
 
                                       57
<PAGE>   63
 
director of Hallwood Realty Corporation ("Hallwood Realty"), which is the
general partner of Hallwood Realty Partners, L.P., since November 1990. He is a
Solicitor of the Supreme Court of Judicature of England.
 
     William L. Guzzetti, 54, has been President of Hallwood G.P. and HPI since
October 1989, and a director of Hallwood G.P. and HPI since August 1989. He was
President, Chief Operating Officer and a director of HEC from February 1985
until November 1996. Mr. Guzzetti joined HEC in February 1976 as Vice President,
Secretary and General Counsel and served in these positions until November 1980.
He served as Senior Vice President, Secretary and General Counsel of HEC from
November 1980 until February 1985, when he became President of HEC. Mr. Guzzetti
has been President, Chief Operating Officer and a director of HCRC since May
1991. Mr. Guzzetti is also an Executive Vice President of Hallwood Group and in
that capacity may devote a portion of his time to the activities of Hallwood
Group, including the management of real estate investments, acquisitions and
restructurings of entities controlled by Hallwood Group. He is a director and
President of Hallwood Realty and in that capacity may devote a portion of his
time to the activities of Hallwood Realty.
 
     Russell P. Meduna, 42, has served as Executive Vice President of Hallwood
G.P. and HPI since October 1989. He was Executive Vice President of HEC from
June 1991 until November 1996. He was Vice President of HEC from May 1990 until
June 1991. Mr. Meduna became Executive Vice President of HCRC in June 1992. Mr.
Meduna was Vice President of Hallwood G.P. and HPI from April 1989 to October
1989 and Manager of Operations from January 1989 to April 1989. He joined HPI in
1984 as Production Manager. Prior to joining HPI, he was employed by both major
and independent oil companies. Mr. Meduna is a registered professional engineer
in the States of Colorado and Texas.
 
     Cathleen M. Osborn, 45, has served as Vice President, Secretary and General
Counsel of Hallwood G.P. and HPI since September 1986. She was Vice President,
Secretary and General Counsel of HEC from June 1991 until November 1996. Ms.
Osborn became Secretary and General Counsel of HCRC in May 1992 and Vice
President in June 1992. She joined Hallwood G.P. and HPI in 1985 as senior staff
attorney. Ms. Osborn is a member of the Colorado Bar Association.
 
     Robert Pfeiffer, 41, has served as Vice President of Hallwood G.P. and HPI
since August 1986. He was Vice President of HEC from June 1991 until November
1996. Mr. Pfeiffer became Chief Financial Officer of HPI in June 1994. He has
been Vice President of HPI since June 1992. He joined Hallwood G.P. and HPI in
1984. From July 1979 to May 1984, he was employed by Price Waterhouse as a
senior accountant. Mr. Pfeiffer is a member of the American Institute of
Certified Public Accountants and the Colorado Society of Certified Public
Accountants.
 
     Betty J. Dieter, 49, has been Vice President of HPI responsible for
domestic operations since January 1995. Her previous positions with HPI have
included Operations Manager, Rocky Mountain and Mid-Continent District Manager
and Manager for Operations Accounting and Administration. She joined HPI in
1985, and has 25 years experience in accounting and operations, 18 of which are
in the oil and gas industry. Ms. Dieter is a Certified Public Accountant.
 
     George Brinkworth, 55, has been Vice President-Exploration and
International Division of HPI since August 1994. He became associated with HPI
in 1987 when he was President of a joint venture program funded by HPI and two
other domestic oil companies. Mr. Brinkworth has 33 years experience with
various exploration and production companies, including previous responsibility
for operations in the United Kingdom, Spain, Morocco, Egypt and Indonesia. He is
a registered geophysicist in the State of California.
 
     William H. Marble, 47, has served as Vice President of HPI since December
1990. His previous positions with HPI have included Texas/Gulf Coast District
Manager, Manager of Nonoperated Properties and Chief Engineer. He joined a
predecessor general partner of the Partnership in 1984. Mr. Marble is a
registered engineer in the State of Colorado and has 23 years oil and gas
engineering experience.
 
     Brian M. Troup, 50, has served as a director of Hallwood G.P. since March
1997. Mr. Troup was a director of HEC from May 1984 until November 1996. He has
been President and Chief Operating Officer of Hallwood Group since April 1986,
and he is a director. He has been a director of HCRC since February 1992.
 
                                       58
<PAGE>   64
 
Mr. Troup is a director of Hallwood Holdings S.A. and of Hallwood Realty. He is
an associate of the Institute of Bankers in Scotland and a member of the Society
of Investment Analysts in the United Kingdom.
 
     Hans-Peter Holinger, 55, has served as a director of Hallwood G.P. since
March 1997. He was a director of HEC from May 1984 until November 1996. Mr.
Holinger served as Managing Director of Interallianz Bank Zurich A.G. from 1977
to February 1993. Since February 1993, he has been the majority owner of
Holinger Asset Management AG, Zurich. Mr. Holinger is a citizen of Switzerland.
 
     Rex A. Sebastian, 68, has served as a director of Hallwood G.P. since March
1997. He was a director of HEC from January 1993 until November 1996. Mr.
Sebastian is a member of the board of directors of Ferro Corporation. He served
as Senior Vice President -- Operations of Dresser Industries, Inc. from January
1975 until his retirement in July 1985. He joined Dresser in 1966. Mr. Sebastian
is now a private investor.
 
     Nathan C. Collins, 63, has served as a director of Hallwood G.P. since
March 1997. He was a director of HEC from March 1995 until November 1996. From
March 1, 1995 to March 1, 1996, he was President, Chief Executive Officer and a
director of Flemington National Bank & Trust Co. in Flemington, New Jersey. From
November 1987 until December 1994, he was Chairman of the Board of Directors,
President and Chief Executive Officer of BancTexas Group Inc. He began his
banking career in August 1964 with the Valley National Bank in Phoenix, Arizona
and held various positions there, finally becoming Executive Vice President,
Senior Credit Officer and Manager of Asset/Liability Group of the bank. Mr.
Collins is now a private investor.
 
     In July 1996, Hallwood Group entered into a settlement of a claim by the
Commission arising from the sale of a small portion of its holdings in the stock
of ShowBiz Pizza Time, Inc. ("ShowBiz") during a four-day period in June 1993.
These and other similar sales were made by Hallwood Group pursuant to a
pre-planned, long-term selling program begun in December 1992. The Commission
asserted that some, but not all, of Hallwood Group's June 1993 sales were
improper because, before the sales program was completed, Hallwood Group was
alleged to have received non-public information about ShowBiz. In connection
with the settlement, Hallwood Group agreed to contribute approximately $953,000,
representing the loss that the Commission alleged Hallwood Group avoided by
selling during the four-day period, plus interest of $240,000. Hallwood Group
also agreed to be subject to an injunction against any future violations of
certain federal securities laws. In addition, the Commission alleged that
Anthony J. Gumbiner, who is Chairman of the Board and Chief Executive Officer of
Hallwood Group, failed to take appropriate action to discontinue Hallwood
Group's sales of the ShowBiz shares during the four days in question. Mr.
Gumbiner did not directly conduct the sales, nor did he sell any shares for his
own account or for the account of any trust for which he has the power to
designate the trustee. Although the sales were made solely by Hallwood Group,
the Commission assessed a civil penalty of $477,000, against Mr. Gumbiner, as a
"control person" for Hallwood Group. Mr. Gumbiner, however, is not subject to
any separate injunction concerning his future personal activities. As provided
in the settlement, neither Hallwood Group nor Mr. Gumbiner admitted or denied
the allegations made by the Commission, and both entered into the settlement to
avoid the extraordinary time and expense that would be involved in protracted
litigation with the government. The settlement did not involve HEP or restrict
its activities in any way.
 
                                       59
<PAGE>   65
 
                             EXECUTIVE COMPENSATION
 
GENERAL
 
     Neither the Partnership nor the General Partner has any employees.
Management services are provided to the Partnership by HPI, a subsidiary of the
Partnership. Employees of HPI perform all duties related to the management of
the Partnership on behalf of the General Partner. Since HPI also performs
services for HCRC, the Partnership is charged for management services by HPI
based on an allocation procedure that takes into account the amount of time
spent on management, the number of properties owned by the Partnership and the
Partnership's performance relative to HCRC and other related entities. The
allocation procedure is applied consistently to all related entities for which
HPI performs services. In 1996 the Partnership reimbursed HPI for approximately
$1.9 million of expenses, of which $675,338 was attributable to compensation
paid to executive officers of Hallwood G.P. The reimbursement paid in 1997 is
not yet available.
 
COMPENSATION OF EXECUTIVE OFFICERS
 
     The following table sets forth the compensation to the Chief Executive
Officer of Hallwood G.P. and each of the four other most highly compensated
officers of Hallwood G.P. whose compensation paid by HPI exceeded $100,000
(determined for the year ended December 31, 1996) for services to the
Partnership, its subsidiaries and its General Partner for the years ended
December 31, 1996, 1995, and 1994.
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                         ANNUAL                  LONG TERM
                                      COMPENSATION             COMPENSATION
                                   -------------------   -------------------------
                                                           SECURITIES
                                                           UNDERLYING
                                                         ---------------    LITP        ALL OTHER
NAME & PRINCIPAL POSITION   YEAR    SALARY     BONUS     OPTIONS/SARS(#)   PAYOUTS   COMPENSATION(1)
- -------------------------   ----   --------   --------   ---------------   -------   ---------------
<S>                         <C>    <C>        <C>        <C>               <C>       <C>
Anthony J. Gumbiner(2)....  1996   $250,000   $      0          0          $    0    $             0
     Chief Executive        1995    250,000          0         (3)              0                  0
     Officer                1994    125,000          0          0               0                  0
William L. Guzzetti.......  1996    204,294    131,500          0          33,170              5,699
     President and Chief    1995    204,412     75,000         (3)         15,753              6,004
     Operating Officer      1994    200,240     72,800          0           9,449              6,004
Russell P. Meduna.........  1996    163,664    101,900          0          33,170              4,500
     Executive Vice         1995    167,364    161,000         (3)         15,753              4,810
     President              1994    164,024     24,200          0           9,449              4,409
Robert S. Pfeiffer........  1996    107,518     56,700          0          23,092              4,300
     Vice President and     1995    109,949     94,000         (3)         11,692              3,160
     Chief Financial        1994    107,755     25,700          0           6,963              3,160
     Officer
Cathleen M. Osborn........  1996    105,685     62,400          0          23,092              4,500
     Vice President and     1995    109,069     95,000         (3)         11,692              3,160
     General Counsel        1994    105,848     24,600          0           6,963              3,160
</TABLE>
 
- ---------------
 
(1) Employer contribution to 401(k) and a service award of $1,199 paid to Mr.
    Guzzetti.
 
(2) For 1994, 1995 and 1996, Mr. Gumbiner had a Compensation Agreement with HPI.
    $250,000 was paid under this agreement in 1995 and 1996; $125,000 was paid
    in 1994. The Compensation Agreement was effective August 1, 1994 and
    terminated effective December 1996. In addition to compensation listed in
    the table, HPI has a consulting agreement with Hallwood Group for 1994
    through 1996, pursuant to which Hallwood Group received an annual consulting
    fee of $300,000 from affiliates of HPI. The consulting services were
    provided by HSC Financial Corporation ("HSC Financial"), through the
 
                                       60
<PAGE>   66
 
    services of Mr. Gumbiner and Mr. Troup, and Hallwood Group paid the annual
    fee it received to HSC Financial.
 
(3) Consists of the following options, all of which were granted in 1995. All of
    the HCRC Options have been adjusted to give effect to the 3-for-1 split
    effective in 1997.
 
<TABLE>
<CAPTION>
                                                                        Securities Underlying
                        Name                             Company           Options/SARs(#)
                        ----                             -------        ---------------------
    <S>                                                  <C>            <C>
         Anthony J. Gumbiner                             HEP                   127,500
                                                         HCRC                   47,700
         William L. Guzzetti                             HEP                    63,750
                                                         HCRC                   23,850
         Russell P. Meduna                               HEP                    59,500
                                                         HCRC                   22,260
         Robert S. Pfeiffer                              HEP                    25,500
                                                         HCRC                    9,540
         Cathleen M. Osborn                              HEP                    25,500
                                                         HCRC                    9,540
</TABLE>
 
OPTION GRANTS AND EXERCISES IN LAST FISCAL YEAR
 
     No options were granted during 1996. No executive officer exercised options
during 1996.
 
     Aggregated Option/SAR Exercises in Last Fiscal Year and FY-End Option/SAR
Values
 
<TABLE>
<CAPTION>
                                Number Of Securities Underlying              Value Of Unexercised
                             Unexercised Options/SARs At FY-End(#)  In-the-Money Options/SARs At FY-End($)
        Name                    Exercisable/Unexercisable(1)(3)        Exercisable/Unexercisable(2)(4)
        ----                 -------------------------------------  --------------------------------------
<S>                    <C>   <C>                                    <C>
Anthony J. Gumbiner    HEP               85,425/42,075                         266,593/131,484
                       HCRC              31,800/15,900                         524,700/262,350
William L. Guzzetti    HEP               42,713/21,038                         133,477/ 65,742
                       HCRC              15,900/ 7,950                         262,350/131,175
Russell P. Meduna      HEP               39,975/19,635                         124,578/ 61,359
                       HCRC              14,838/ 7,422                         244,827/122,463
Robert S. Pfeiffer     HEP               17,085/ 8,415                          53,391/ 26,297
                       HCRC              6,360/ 3,180                          104,940/ 52,470
Cathleen M. Osborn     HEP               17,085/ 8,415                          53,391/ 26,297
                       HCRC              6,360/ 3,180                          104,940/ 52,470
</TABLE>
 
- ---------------
 
(1) All of the HEP options expire January 31, 2005.
 
(2) The exercise price of the HEP options is $5.75 per Class A Unit. The closing
    price of the Class A Units was $8.875 on December 31, 1996.
 
(3) The HCRC options have a ten-year term and vest cumulatively over three years
    at the rate of 1/3 on each of the date of grant and the first two
    anniversaries of the grant date. All options vest immediately in the event
    of certain changes in control of the Company. The number of options has been
    adjusted to reflect a 3-for-1 stock split effective in 1997.
 
(4) The exercise price of the HCRC options is $6.67 per share. The closing price
    of the common stock was $23.17 on December 31, 1996. The number of options
    and the exercise and closing price have been adjusted to reflect a 3-for-1
    stock split effective in 1997.
 
                                       61
<PAGE>   67
 
LONG-TERM INCENTIVE PLAN
 
     The following table describes performance units awarded to the executive
officers of Hallwood G.P. for 1996 under the Incentive Plan (as described below)
for the Partnership and affiliated entities. The value of awards under each plan
depends primarily on the Partnership's success in drilling, completing and
achieving production from new wells each year and from certain recompletions and
enhancements of existing wells.
 
              LONG-TERM INCENTIVE PLAN AWARDS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                  Number        Performance or         Estimated Future
                                    Of           Other Period       Payouts Under Non-Stock
             Name                  Units         Until Payout        Price-Based Plans(1)
             ----                ---------      --------------      -----------------------
<S>                              <C>            <C>                 <C>
Anthony J. Gumbiner(2)                --               --                   $   --
William L. Guzzetti               0.0841             2001                   25,835
Russell P. Meduna                 0.0841             2001                   25,835
Robert S. Pfeiffer                0.0580             2001                   17,817
Cathleen M. Osborn                0.0580             2001                   17,817
</TABLE>
 
- ---------------
 
(1) This amount represents an award under the Incentive Plan. There are no
    minimum, maximum or target amounts payable under the Incentive Plan.
    Payments under the awards will be equal to the indicated percentage of Plan
    net cash flow from certain wells for the first five years after an award
    and, in the sixth year, the indicated percentage of 80% of the remaining net
    present value of estimated future production from the wells allocated to the
    Plan. The amounts shown above are estimates based on estimated reserve
    quantities and future prices. Because of the uncertainties inherent in
    estimating quantities of reserves and prices, it is not possible to predict
    cash flow or remaining net present value of estimated future production with
    any degree of certainty.
 
(2) In addition, an award of .4200 units, with an estimated future payout of
    $129,024, was made to HSC Financial, with which Mr. Gumbiner is associated.
    The payout period ends in 2001.
 
     The Incentive Plan for the Partnership and its affiliated entities,
including HCRC, is intended to provide incentive and motivation to HPI's key
employees to increase the oil and gas reserves of the various affiliated
entities for which HPI provides services and to enhance those entities' ability
to attract, motivate and retain key employees and consultants upon whom, in
large measure, those entities' success depends.
 
     Under the Incentive Plan, the Board of Directors of Hallwood G.P. (the
"Board") annually determines the portion of the Partnership's collective
interests in the cash flow from certain international projects and from domestic
wells drilled, recompleted or enhanced during that year (the "Plan Year") which
will be allocated to participants in the plan and the percentage of the
remaining net present value of estimated future production from domestic wells
for which the participants will receive payment in the sixth year of an award.
The portion allocated to participants in the plan is referred to as the Plan
Cash Flow. The Board then determines which key employees and consultants may
participate in the plan for the Plan Year and allocates the Plan Cash Flow among
the participants. Awards under the plan do not represent any actual ownership
interest in the wells. Awards are made in the Board's discretion.
 
     Each award under the Incentive Plan represents the right to receive for
five years a specified share of the Plan Cash Flow attributable to certain
domestic wells drilled, recompleted or enhanced during the Plan Year. In the
sixth year after the award, the participant is paid an amount equal to a
specified percentage of the remaining net present value of estimated future
production from the wells and the award is terminated. Cash flow from
international projects, if any, allocated to the Incentive Plan is paid to
participants for a 10-year period, with no buy-out for estimated future
production.
 
     The awards for the 1996 Plan Year were made in January 1996. No other
awards were made in 1996. Awards for the 1997 Plan were made in March 1997. The
estimated future payouts under the 1997 awards will be calculated based on
estimates of the Partnership's revenues at December 31, 1997. For both the 1996
and 1997 Plan Years, the Compensation Committee of Hallwood G.P. determined that
the total Plan Cash Flow
 
                                       62
<PAGE>   68
 
would be equal to 2.4% of the cash flow of the domestic wells completed,
recompleted or enhanced during each Plan Year. Accordingly, the value of awards
for each Plan Year depends primarily on the Partnership's success in drilling,
completing and achieving production from new wells each year and from certain
recompletions and enhancements of existing wells. The Compensation Committee
also determined that the participants' interests in eligible domestic wells for
the 1996 and 1997 Plan Years would be purchased in the sixth year at 80% of the
remaining net present value of the wells completed in the Plan Years. The
Compensation Committee also determined that the total award would be allocated
among key employees primarily on the basis of salary, to the extent of 70% of
the total award, and on individual performance, to the extent of 30% of the
total award.
 
DIRECTOR COMPENSATION
 
     Each director of Hallwood G.P. who is not an officer of Hallwood G.P. or
HCRC or an employee of HPI, is paid an annual fee of $20,000 that is
proportionately reduced if the director attends fewer than four regularly
scheduled meetings of the Board during the year. During 1996, Messrs. Holinger,
Sebastian and Collins were each paid $20,000. In addition, all directors are
reimbursed for their expenses in attending meetings of the Board and committees.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
     The Board of Directors of Hallwood G.P. makes compensation decisions for
the Partnership during the first quarter of each year. Mr. Gumbiner is Chief
Executive Officer of Hallwood G.P. and serves on the compensation committee of
Hallwood Group, of which Mr. Troup is President and Mr. Guzzetti is Executive
Vice President. Mr. Gumbiner is also Chief Executive Officer and a director of
HCRC, of which Mr. Troup is a director and Mr. Guzzetti is a director and
President. Messrs. Gumbiner, Troup and Guzzetti served on HCRC's Board of
Directors which made compensation decisions for HCRC in January 1996. Mr.
Gumbiner is Chief Executive Officer and a director, and Mr. Guzzetti is
President and a director, of Hallwood Realty. During 1996, Mr. Gumbiner and Mr.
Guzzetti served on the compensation committee of Hallwood Realty.
 
     The Partnership participates in a financial consulting agreement between
HPI and Hallwood Group, pursuant to which Hallwood Group furnishes consulting
and advisory services to HPI, the Partnership and their affiliates. Under the
terms of this agreement, HPI and its affiliates are obligated to pay Hallwood
Group $550,000 per year until June 30, 2000. The agreement automatically renews
for successive three year terms; either party may terminate the agreement on not
less than 30 days written notice prior to the expiration of any three year term.
The financial consulting agreement replaced both a previous financial consulting
agreement and a compensation agreement with Mr. Gumbiner. Under the terms of the
previous financial consulting agreement, HPI and its affiliates were obligated
to pay Hallwood Group three annual payments of $300,000 beginning June 30, 1994,
and Hallwood Group was obligated to furnish consulting and advisory services to
HPI and its affiliates through June 30, 1997. In 1996, the consulting services
were provided by HSC Financial Corporation, through the services of Mr. Gumbiner
and Mr. Troup, and Hallwood Group paid the annual fee it received to HSC
Financial. A fee of approximately $158,850 was paid in 1996 by the Partnership
pursuant to this arrangement. For 1994, 1995 and 1996, Mr. Gumbiner had a
compensation agreement with HPI pursuant to which Mr. Gumbiner was paid $250,000
by HPI, the Partnership and their affiliates. This agreement was terminated
effective December 31, 1996. See "Summary Compensation Table" and footnotes for
additional discussion of this arrangement.
 
     The Partnership reimburses Hallwood Group for expenses incurred on behalf
of the Partnership. In 1996, the Partnership reimbursed Hallwood Group
approximately $152,000 of expenses.
 
                                       63
<PAGE>   69
 
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     HPI performs all operations on behalf of the Partnership, and the
Partnership reimburses HPI at its cost for direct and indirect expenses incurred
by HPI for the benefit of the Partnership and its properties. The indirect
expenses for which HPI is reimbursed include employee compensation, office rent,
office supplies and employee benefits. The Partnership generally allocates these
expenses by multiplying the aggregate amount of the indirect expenses incurred
by HPI by the estimated time that the employees of HPI spend on managing the
Partnership and dividing by the aggregate time that the employees of HPI spend
on all the entities that HPI manages. The allocation of certain components of
employee compensation also takes into account the Partnership's performance
relative to its affiliates and the Partnership's ownership interest in certain
wells. HPI does not receive any fee for its services. In 1996, the Partnership
reimbursed HPI approximately $1.9 million for direct and indirect expenses, not
including payments and reimbursements to Hallwood Group discussed below.
 
     The majority of the Partnership's oil and gas properties are managed and
operated by HPI. HPI also manages and operates oil and gas properties on behalf
of independent joint interest owners and affiliates. In its capacity as manager
and operator, HPI pays all costs and expenses of operations and distributes all
revenues associated with the properties.
 
     The Partnership Agreement provides that the General Partner will receive an
acquisition fee in cash or Units equal to 2% of the fair market value of the
total consideration paid in the acquisition of oil and gas properties and
related assets. In 1996, the Partnership paid the General Partner total
acquisition fees of $294,483 in cash. The Partnership Agreement also provides
that the General Partner is to receive a 4% interest in all oil and gas
properties and related assets acquired by the Partnership, with certain
exceptions. Pursuant to this provision, in 1996, the General Partner received
interests valued at $540,000.
 
     Under the Partnership Agreement, the General Partner also receives a direct
or indirect interest in all wells drilled by the Partnership through its 1%
interest in the Partnership. See "Description of Partnership
Agreements -- Allocations of Profits and Losses -- The Partnership";
"-- Allocation of Profits and Losses -- HEPO"; and "Allocations of Profits and
Losses -- EDPO." The interests received by the General Partner pursuant to these
provisions in 1996 had a standardized measure of discounted future net cash
flows at December 31, 1996 of $965,000.
 
     The Partnership participates with HCRC in substantially all of its oil and
gas projects, generally on a 50/50 basis, unless the project is inconsistent
with either entity's objectives or the entities already have differing interests
in the project. During 1996, all projects were undertaken jointly by the
Partnership and HCRC on this basis.
 
     Under a financial consulting agreement with HPI, Hallwood Group or its
agent furnishes consulting and advisory services to HPI, the Partnership and
their affiliates. Under the terms of the consulting agreement, HPI and its
affiliates are obligated to pay Hallwood Group $550,000 per year until June 30,
2000. The agreement automatically renews for successive three-year terms; either
party may terminate the agreement on not less than 30 days written notice prior
to the expiration of any three-year term. Under the terms of a previous
financial consulting agreement containing substantially the same terms, HPI and
its affiliates were obligated to pay Hallwood Group three annual payments of
$300,000 beginning June 30, 1994, and Hallwood Group was obligated to furnish
consulting and advisory services to HPI and its affiliates through June 30,
1997. In 1996, the consulting services were provided by HSC Financial
Corporation, through the services of Mr. Gumbiner and Mr. Troup, and Hallwood
Group paid the annual fee it received to HSC Financial. A fee of approximately
$158,850 was paid in 1996 by the Partnership pursuant to this arrangement. For
1994, 1995 and 1996, Mr. Gumbiner also had a compensation agreement with HPI
pursuant to which Mr. Gumbiner was paid $250,000 by HPI, the Partnership and
their affiliates. The amount of consulting fees allocated to the Partnership
under this agreement was $125,000 in both 1996 and 1995 and $62,500 in 1994.
This agreement was terminated effective December 31, 1996.
 
     The Partnership also reimburses Hallwood Group for expenses incurred on
behalf of the Partnership. In 1996, the Partnership reimbursed Hallwood Group
approximately $152,000 of expenses.
 
                                       64
<PAGE>   70
 
              CONFLICTS OF INTEREST AND FIDUCIARY RESPONSIBILITIES
 
GENERAL
 
     Certain conflicts of interest exist and may arise in the future as a result
of the General Partner's relationships with its affiliates, on the one hand, and
the Partnership and the holders of the Units, on the other hand. Hallwood G.P.,
as the general partner of HEPGP, has a fiduciary duty to manage the Partnership
in a manner that is in the best interest of the Unitholders. The officers and
directors of Hallwood G.P. have fiduciary duties to the shareholders of Hallwood
G.P. and to manage the General Partner in the best interests of HEPGP's
partners, Hallwood G.P. and Hallwood Group. In addition, Messrs. Gumbiner, Troup
and Guzzetti, directors and officers of Hallwood G.P., are directors and Messrs.
Gumbiner and Guzzetti are executive officers of Hallwood Group and, as such, owe
a fiduciary duty to the shareholders of Hallwood Group. Moreover, the officers
of Hallwood G.P. are also officers or directors of HCRC and, accordingly, owe a
fiduciary duty to the shareholders of HCRC. HCRC participates in oil and gas
projects with the Partnership. Consequently, the duties of Hallwood G.P. and its
officers and directors to the Unitholders of the Partnership may come into
conflict with their duties to other entities or investors. See "Management."
 
     Conflicts of interest exist with respect to the situations described below,
among others:
 
    The General Partner May Place Properties Within the Operating Partnerships
    that are More Favorable to the General Partner
 
     Because HEPO was formed at the same time and by the same general partner as
the Partnership, whereas EDPO was formed by a different general partner and
later acquired by the Partnership, the two Operating Partnerships have different
provisions regarding the manner in which the General Partner participates in
drilling conducted by that Operating Partnership. In HEPO, the General Partner
will be allocated 18.75% of revenues and costs attributable to production and
the Unitholders will be allocated 81.25%. In EDPO, the General Partner generally
is allocated 1% of all costs through completion of and 5% of revenues from
development wells and 10% of all costs through completion of and 25% of revenues
from exploratory wells. The differences in allocation of costs and revenues
present the General Partner with a conflict of interest in determining through
which of the Operating Partnerships to acquire new drilling locations. The Board
of Directors of Hallwood G.P. has adopted a policy to address this potential
conflict of interest, providing generally that new wells to be drilled by the
Partnership in 14 West Texas counties, other than on properties in which EDPO
has an existing interest or that are contiguous to properties in which EDPO has
an existing interest, will be drilled in HEPO through the joint venture with the
General Partner, and that all other new drilling will be done in EDPO.
 
    The General Partner's Affiliates May Compete with the Partnership in Certain
    Circumstances
 
     Affiliates of the General Partner (including Hallwood Group and HCRC) are
not prohibited from engaging in any business or activity, even if such activity
may be in direct competition with the Partnership. Hallwood Group does not
presently engage in oil and gas activities other than through its interests in
Hallwood G.P., HEPGP, the Partnership and HCRC. HCRC, however, is actively
engaged in oil and gas production, development and exploration. To minimize the
conflicts of interest between the Partnership and HCRC, the Board of Directors
of each of Hallwood G.P. and HCRC has adopted a policy that each Board will
review annually participation by both the Partnership and HCRC in new oil and
gas properties. Generally the Partnership and HCRC will participate on a 50/50
basis in all future oil and gas drilling projects, leases, concessions or
acquisitions, unless the activity is inconsistent with either entity's
objectives or the entities already have differing interests in the subject
property. This policy may change, however, if circumstances change or the Board
of Directors of Hallwood G.P. or HCRC determines it is not in such entity's best
interest.
 
                                       65
<PAGE>   71
 
    Contracts Between the Partnership and the General Partner and Its Affiliates
    Will Not Be the Result of Arm's-Length Negotiations
 
     Under the terms of the Partnership Agreement, the Partnership is not
restricted from paying the General Partner or its affiliates for any services
rendered, provided such services are rendered on terms that are reasonable to
the Partnership. The Partnership Agreement does not specify who is to determine
whether the terms of transactions are reasonable. In practice, this
determination is made by management, under the supervision of the Board of
Directors of the General Partner. Transactions between the Partnership and the
General Partner and its affiliates will not be the result of arm's-length
negotiations.
 
    Certain Actions Taken by the General Partner May Affect the Amount of Cash
    Available for Distribution to Unitholders
 
     Decisions of the General Partner with respect to the amount and timing of
cash expenditures, participation in capital expansions and acquisitions,
borrowings, issuances of additional partnership interests and reserves in any
quarter may affect whether, or the extent to which, there is available cash for
distributions on all Units in such quarter or in subsequent quarters. The
Partnership Agreement provides that the Partnership and the Operating
Partnerships may borrow funds from the General Partner and its affiliates,
provided that neither the General Partner nor its affiliates may charge interest
to the Partnership greater than the lesser of (i) the General Partner's or its
affiliate's actual interest cost or (ii) the rate that would be charged to the
Partnership by an unrelated lender on a comparable loan. The General Partner and
its affiliates may not borrow funds from the Partnership or the Operating
Partnerships.
 
    The Partnership Will Reimburse the General Partner and Its Affiliates for
    Certain Expenses
 
     Under the terms of the Partnership Agreement, the General Partner and its
affiliates will be reimbursed by the Partnership for expenses incurred on behalf
of the Partnership, including costs incurred in providing corporate staff and
support services to the Partnership. The General Partner may determine the
expenses that are allocable to the Partnership in any reasonable manner
determined by the General Partner in its sole discretion.
 
    Employees of the General Partner's Affiliates Who Provide Services to the
    Partnership Will Also Provide Services to Other Businesses
 
     The Partnership does not have any employees and relies on the employees of
HPI to manage the Partnership's affairs. Although the General Partner will not
conduct any other business, Hallwood Group, HCRC and other affiliates of the
General Partner or the Partnership will conduct business and activities of their
own in which the Partnership will have no economic interest and which may also
be conducted by HPI's employees. There may be competing demands among the
Partnership, Hallwood Group, HCRC and such affiliates for the time and efforts
of employees who provide services to more than one of these entities.
 
ACQUISITION OF ADDITIONAL PROPERTIES AND CONDUCT OF EXPLORATORY AND DEVELOPMENT
DRILLING
 
     The Partnership Agreement provides that the General Partner will receive an
acquisition fee in cash or Units equal to 2% of the fair market value of the
total consideration paid in the acquisition of oil and gas properties and oil
and gas related assets by the Partnership, including acquisitions of such oil
and gas interests through the acquisition of stock of corporations and similar
transactions. If the acquisition fee is paid in Units, the number of Units to be
received by the General Partner will be determined by dividing the average
market price of the Units for the five business days immediately preceding the
date of the acquisition into an amount equal to 2% of the acquisition cost of
such assets. With respect to acquisitions of oil and gas properties and oil and
gas related assets other than Undeveloped Acreage and Proved Undeveloped Acreage
(as such terms are defined in the Partnership Agreement), including acquisitions
of such oil and gas interests through the acquisition of stock of corporations
and similar transactions and as an incentive for the General Partner to make
acquisitions of oil and gas properties and oil and gas related assets on behalf
of the Partnership, the General Partner also will receive 4% of the interest
acquired by the Partnership and the Operating Partnerships in such assets. The
General Partner's interest in the foregoing fees may result in conflicts of
interest as to whether the Partnership should engage in any activity or acquire
a property.
 
                                       66
<PAGE>   72
 
FIDUCIARY AND OTHER DUTIES
 
     The General Partner is accountable to the Partnership and the Unitholders
as a fiduciary. Consequently, the General Partner must exercise good faith and
integrity in handling the Partnership's assets and affairs. In contrast to the
relatively well-developed law concerning fiduciary duties owed by officers and
directors to the stockholders of a corporation, the law concerning the duties
owed by general partners to other partners and to partnerships is relatively
undeveloped. Neither the Delaware Revised Uniform Limited Partnership Act
("Delaware Act") nor Delaware case law defines with particularity the fiduciary
duties owed by general partners to limited partners or a limited partnership,
but the Delaware Act provides that Delaware limited partnerships may, in their
partnership agreements, restrict or expand the fiduciary duties that might
otherwise be applied by a court in analyzing the duties owed by general partners
to limited partners and the partnership.
 
     Fiduciary duties are generally considered to include an obligation to act
with the highest good faith, fairness and loyalty. Such duty of loyalty, in the
absence of a provision in a partnership agreement providing otherwise, would
generally prohibit a general partner of a Delaware limited partnership from
taking any action or engaging in any transaction as to which it has a conflict
of interest. In order to induce the General Partner to manage the business of
the Partnership, the Partnership Agreement, as permitted by the Delaware Act,
contains various provisions that may restrict the fiduciary duties that might
otherwise be owed by the General Partner to the Partnership and its Unitholders,
and waiving or consenting to conduct by the General Partner and its affiliates
that might otherwise raise issues as to compliance with fiduciary duties or
applicable law.
 
     The Partnership Agreement provides that, in order to become a limited
partner of the Partnership, a holder of Class C Units is required to agree to be
bound by the provisions thereof, including the provisions discussed above. This
is in accordance with the policy of the Delaware Act favoring the principle of
freedom of contract and the enforceability of partnership agreements. The
Delaware Act also provides that a partnership agreement is not unenforceable by
reason of its not having been signed by a person being admitted as a limited
partner or becoming an assignee in accordance with the terms thereof.
 
     Under the terms of the Partnership Agreement, the Partnership is required
to indemnify the General Partner, its affiliates and their respective officers,
directors, employees, affiliates, partners, agents and trustees, to the fullest
extent permitted by law, against liabilities, costs and expenses incurred by the
General Partner or such other persons, if the General Partner or such persons
acted in good faith and in a manner they reasonably believed to be in, or not
opposed to, the best interests of the Partnership and, with respect to any
criminal proceedings, had no reasonable cause to believe the conduct was
unlawful. See "Description of The Partnership Agreements -- Indemnification."
Thus, the General Partner could be indemnified for its negligent acts if it
meets such requirements concerning good faith and the best interests of the
Partnership. Further, the Partnership Agreement provides that the General
Partner, its affiliates and their respective officers, directors, employees,
affiliates, agents, and trustees will not be liable for monetary damages to the
Partnership, the limited partners or assignees for errors of judgment or for any
acts or omissions if the General Partner and such other persons acted in good
faith.
 
                                       67
<PAGE>   73
 
                             PRINCIPAL UNITHOLDERS
 
     The following table shows information, as of January 30, 1998, about any
individual, partnership or corporation that is known to the Partnership to be
the beneficial owner of more than 5% of each class of Units issued and
outstanding and each executive officer and director of Hallwood G.P. and all
executive officers/directors as a group.
 
   
<TABLE>
<CAPTION>
                                                                                   Subsequent to
                                                Prior to Offering                   Offering(1)
                                     ---------------------------------------   ----------------------
                                                         Amount      Percent      Amount      Percent
                                       Title of       Beneficially     of      Beneficially     of
     Name and Address of Owner           Class           Owned        Class       Owned        Class
     -------------------------       -------------    ------------   -------   ------------   -------
<S>                                  <C>              <C>            <C>       <C>            <C>
The Hallwood Group Incorporated      Class A Units(2)    657,260        6.5       657,260        6.5
  3710 Rawlins Street, Suite 1500    Class B Units       143,773      100.0       143,773      100.0
  Dallas, Texas 75219                Class C Units        43,816        6.6        43,816        1.8
Hallwood Consolidated Resources      Class A Units     1,948,189       19.5     1,948,189       19.5
  Corporation                        Class C Units       129,877       19.6       129,877        5.3
  4582 S. Ulster Street Parkway
  Suite 1700
  Denver, Colorado 80237
Heartland Advisors, Inc.             Class A Units(3)    880,200        8.8       880,200        8.8
  790 North Milwaukee Street
  Milwaukee, WI 53202
William Baxter Lee, III              Class A Units(4)    707,000        7.1       707,000        7.1
  c/o Glankler Brown, PLLC           Class C Units(4)     37,000        5.6        37,000        1.5
  1700 One Commerce Sq.
  Memphis, TN 38103
Anthony J. Gumbiner                  Class A Units       127,500        1.3       127,500          *
William L. Guzzetti                  Class A Units        63,850          *        63,850          *
                                     Class C Units             6          *             6          *
Russell P. Meduna                    Class A Units        59,500          *        59,500          *
Cathleen M. Osborn                   Class A Units        25,500          *        25,500          *
Robert Pfeiffer                      Class A Units        25,803          *        25,803          *
                                     Class C Units            20          *            20          *
Brian M. Troup                       Class A Units        85,000          *        85,000          *
Hans-Peter Holinger                             --            --         --            --         --
Rex A. Sebastian                     Class A Units           400          *           400          *
                                     Class C Units            26          *            26          *
Nathan C. Collins                               --            --         --            --         --
All directors and executive
  officers as a                      Class A Units(5)    387,553        3.7       387,553        3.7
  group (9 persons)                  Class C Units            52          *            52          *
</TABLE>
    
 
- ---------------
 
 *  Less than 1%.
 
   
(1) Assuming the sale of 1,800,000 Class C Units in the Offering.
    
 
(2) Includes 143,773 Class B Units (100% of the Class B Units) that are
    convertible into Class A Units one-for-one.
 
(3) According to the Amendment to Schedule 13G filed January 30, 1998 by
    Heartland Advisors, Inc., the Units to which the schedule relates are held
    in investment advisory accounts of Heartland Advisors, Inc. As a result,
    various persons have the right to receive or the power to direct the receipt
    of dividends from, or the proceeds from the sale of, the securities. No such
    account is known to have an interest relating to more than 5% of the class.
 
(4) According to Schedules 13D dated November 26, 1997.
 
(5) Consists of 803 Class A Units and currently exercisable options to purchase
    386,750 Class A Units.
 
                                       68
<PAGE>   74
 
                          DESCRIPTION OF CLASS C UNITS
 
GENERAL
 
     Class C Units are units of limited partner interest in the Partnership.
Registrar & Transfer Co. acts as transfer agent for the Class C Units (the
"Transfer Agent"). The Class C Units are represented by certificates in
registered form. Unitholders may hold Class C Units in nominee accounts for the
account of another person, provided that the nominee certifies to the Transfer
Agent that it is, and to the best of its knowledge such person is, a United
States Citizen (as defined in the Partnership Agreement, see "Glossary of
Certain Terms"). Each Class C Unit is freely transferable to United States
Citizens, except as restricted by federal and state securities laws.
 
     The Class C Units are registered under the Exchange Act, and the
Partnership is subject to the reporting and proxy solicitation requirements of
the Exchange Act and the rules and regulations thereunder. The Partnership is
required to file periodic reports containing financial and other information
with the SEC.
 
     The Class C Units are entitled to a preferential distribution of $1.00 per
Class C Unit per annum, payable quarterly to holders of record on March 31, June
30, September 30 and December 31 in each year. The Class C preferential
distribution is cumulative, and no distributions may be paid or declared on
Class A or Class B Units unless all accrued and unpaid distributions on the
Class C Units have been paid or declared and duly provided for. As of January
30, 1998, there were 664,063 Class C Units outstanding.
 
TRANSFER OF CLASS C UNITS
 
     Class C Units are securities and are transferable to United States Citizens
according to the laws governing transfer of securities. In addition to other
rights acquired upon transfer, the transferor gives the transferee who is a
United States Citizen the right to seek admission as a substituted limited
partner (a "Substituted Limited Partner") in the Partnership in respect of the
transferred Class C Units. A record holder of a Class C Unit, however, will only
have the authority to convey to a purchaser or other transferee who is not a
United States Citizen the right to sell the Class C Unit.
 
     Until a Class C Unit has been transferred on the books of the Transfer
Agent, the Transfer Agent and the Partnership will treat the record holder
thereof as the absolute owner for all purposes. A transfer of a Class C Unit
will not be registered by the Transfer Agent or recognized by the Partnership
unless the transferee executes a Transfer Application ("Transfer Application")
and certifies therein that the transferee and, if the transferee is a nominee
holding for the account of another person, that to the best of its knowledge
such other person, is a United States Citizen. By executing the Transfer
Application, the transferee requests admission as a Substituted Limited Partner
and agrees to be bound by the terms and conditions of the Partnership Agreement,
including the grant of a limited power of attorney to the General Partner.
Whether or not a transferee executes the Transfer Application, a transferee, by
acceptance of the Class C Unit, becomes a party to the Partnership Agreement,
bound by its terms and conditions, and agrees that his transferor has no
liability or responsibility if such transferee neglects or chooses not to
execute and forward the Transfer Application. A transferee will become a
Substituted Limited Partner, effective upon such consent by the General Partner.
The transferee of a Class C Unit, pending admission as a Substituted Limited
Partner, will have the rights of an assignee under state law was its execution
of a Transfer Application.
 
STATUS AS A LIMITED PARTNER OR ASSIGNEE
 
     A transferee of a Class C Unit, in order to be registered on the books of
the Transfer Agent as the record holder, must execute a Transfer Application and
certify that the transferee is a United States Citizen. A transferee who does
not execute a Transfer Application and certify that he is a United States
Citizen will not become a Substituted Limited Partner in the Partnership and
will acquire no rights in the Partnership other than the right to transfer his
Class C Units to a third person who, upon execution of a Transfer Application
and certification that such third person is a United States Citizen, may become
a Substituted Limited Partner of the Partnership. Until such time as a
transferee is admitted as a Substituted Limited Partner of the Partnership, the
assignor Limited Partner (as defined herein) will continue to possess the right
to exercise the
                                       69
<PAGE>   75
 
voting and other rights with respect to the Class C Units transferred. By
executing a Transfer Application and accepting a Class C Unit, transferees of
Class C Units will automatically request admission as a Substituted Limited
Partner in the Partnership, will agree to be bound by the terms and conditions
of the Partnership Agreement, will appoint the General Partner as their
attorney-in-fact and will, pending their admission as Substitute Limited
Partners, be granted the rights of an assignee under state law.
 
     An assignee is entitled to an interest in the Partnership equivalent to
that of a limited partner with respect to the right to share in distributions
from the Partnership, including liquidating distributions, but without the right
to vote directly on certain Partnership matters and otherwise subject to the
limitations under the Delaware Act on the rights of an assignee who has not
become a Substituted Limited Partner. Under the Partnership Agreement, an
assignee becomes a Substituted Limited Partner when the General Partner so
consents in its sole discretion. The General Partner is deemed to consent to the
admission of an assignee as the Substituted Limited Partner and such admission
is effective, as of the close of business at the offices of the Transfer Agent
on the day on which the transferee delivers an executed Transfer Application to
the Transfer Agent, unless the General Partner has previously expressly withheld
such consent. If the General Partner's consent is withheld, the assignee would
be notified by the Transfer Agent and would continue to be an assignee, with the
rights granted to an assignee pursuant to the Partnership Agreement. Transferees
who do not execute a Transfer Application will be treated neither as assignees
nor as record holders of Class C Units and will not receive cash distributions,
federal income tax allocations or reports furnished to record holders of Class C
Units.
 
     In the event the General Partner determines, with the advice of counsel,
that a Limited Partner or assignee is not a United States Citizen, the
Partnership may redeem the Class C Units held by such person for the then
current market price of such Units.
 
DUTIES AND STATUS OF TRANSFER AGENT
 
     The Transfer Agent will act as a registrar and transfer agent for the Class
C Units, and will receive an annual fee from the Partnership for serving in such
capacities. All fees charged by the Transfer Agent for transfers of Class C
Units will be borne by the Partnership and not by the Class C Unitholders
(except that fees similar to those customarily paid by stockholders for surety
bond premiums to replace lost or stolen certificates, tax or other governmental
charges, special charges for services requested by Class C Unitholders and other
similar fees or charges will be borne by the affected Class C Unitholders).
There will be no charge to Class C Unitholders for disbursements of Partnership
cash distributions.
 
                   DESCRIPTION OF THE PARTNERSHIP AGREEMENTS
 
     The following information, as well as the information included elsewhere in
this Prospectus concerning the Partnership Agreement and the Operating
Partnership Agreements, is subject to the detailed provisions of the Partnership
Agreement and the Operating Partnership Agreements, as amended. The Partnership
Agreement and the Operating Partnership Agreements are included as exhibits to
the Registration Statement of which this Prospectus is a part. Copies of the
Partnership Agreement and the Operating Partnership Agreements may be obtained
by a written or oral request directed to Hallwood Energy Partners, L.P.,
Attention: Investor Relations, 4582 South Ulster Street Parkway, Suite 1700,
Denver, Colorado 80237, telephone number (800) 882-9225.
 
     The provisions governing the Partnership and the Operating Partnerships are
complex and extensive, and no attempt has been made below to describe all of
such provisions. The following is a general description of the basic provisions
of the Partnership Agreement and the Operating Partnership Agreements.
 
ORGANIZATION AND DURATION
 
     The Partnership and the Operating Partnerships are each organized as a
Delaware limited partnership. HEPGP is the general partner of all three
partnerships (the "General Partner") and holds a 1% general partner's interest
in each of the Partnership and HEPO and a varying general partner interest in
EDPO, see
 
                                       70
<PAGE>   76
 
"-- Allocation of Profits and Losses -- EDPO." The Class A Unitholders, Class B
Unitholders and Class C Unitholders (including HEPGP in its capacity as a
Unitholder) collectively hold a 99% interest in the Partnership. Income and
losses are allocated among Unitholders as described in "-- Allocation of Profits
and Losses -- The Partnership," below. Each class of Unitholders votes
separately as a class on all matters submitted to Unitholders. The Partnership
holds a 99% interest as the sole limited partner in HEPO and an interest as the
sole limited partner in EDPO.
 
     The Partnership and the Operating Partnerships will terminate on December
31, 2035, unless sooner dissolved.
 
MANAGEMENT
 
     As General Partner, HEPGP will exercise full control over all activities of
the Partnership and Operating Partnerships and, with certain exceptions provided
in the respective partnership agreements, all management powers over and control
of the business and affairs of the partnerships will be vested in the General
Partner. HEPGP's authority as General Partner is, however, limited in certain
respects. The General Partner is prohibited, without the prior approval of
holders of a majority-in-interest ("Majority-In-Interest") of the Limited
Partners, from, among other things, (i) selling or exchanging all or
substantially all of the Partnership's assets or, acting on behalf of the
Partnership, consenting to the sale of all or substantially all of the Operating
Partnerships' assets, or (ii) amending the Partnership Agreement or acting on
behalf of the Partnership, consenting to amendments to the Operating Partnership
Agreements, except for certain amendments described below under "Description of
the Partnership Agreements -- Amendment of Partnership Agreement and Operating
Partnership Agreements." Any amendment to a provision of the Partnership
Agreement that would adversely affect the interests of the limited partners of
the Partnership (the "Limited Partners") in any material respect will require
the approval of the holders of a Majority-In-Interest of the Limited Partners.
Any action requiring approval by a Majority-in-Interest of the Limited Partners
will require approval by holders of a majority of the holders of each of the
Class A Units, the Class B Units and Class C Units, each voting separately as a
class. Hallwood Group holds all the Class B Units and, therefore, may veto any
action requiring the approval by a Majority-in-Interest of the Limited Partners.
 
     The General Partner of the Partnership may be removed by the affirmative
vote of at least two-thirds in interest of each class of Unitholders, subject in
each case to the selection of a successor general partner and receipt of an
opinion of counsel that such removal and the selection of a successor general
partner would not result in the loss of the limited liability of the Limited
Partners or the Partnership (as the limited partner of an Operating Partnership)
or cause the Partnership or any Operating Partnership to be treated as an
association taxable as a corporation for federal income tax purposes. The
withdrawal or removal of the general partner of the Partnership will also
constitute the withdrawal or removal of the general partner of the Operating
Partnerships and the appointment of the person elected as successor general
partner of the Partnership as the successor general partner of the Operating
Partnerships. Hallwood Group holds all of the outstanding Class B Units, which
vote separately as a class on all matters brought for a vote of the Limited
Partners and which, therefore, will enable Hallwood Group to prevent the
adoption of any proposal to remove HEPGP as General Partner.
 
     In the event of withdrawal or removal, the successor general partner will
have the option to acquire the departing General Partner's respective general
partner's interests in the Partnership and the Operating Partnerships for a cash
payment equal to the fair market value (based on the price at which Units are
then trading, or if not so trading, by agreement with the successor general
partner or, failing agreement, as determined by a firm of independent petroleum
engineers selected pursuant to the terms of the Partnership Agreement) of its
respective general partner's interests in the partnerships. The option must be
exercised, if at all, as to the interests of the General Partner in both the
Partnership and the Operating Partnerships. If the option is not exercised, the
General Partner's interest in each of the Partnership and the Operating
Partnerships will be converted into limited partnership interests in the
Partnership. Any successor general partner not exercising the option will be
required, at the effective date of its admission to the Partnership, to
contribute to the capital of the Partnership cash or property having a value
calculated pursuant to the
 
                                       71
<PAGE>   77
 
provisions of the Partnership Agreement. Thereafter, such successor shall be
entitled to 1.0% of all Partnership allocations and distributions.
 
     With the consent of a Majority-In-Interest of each class of Unitholders and
upon receipt of an opinion of independent counsel that such transfer would not
result in the loss of the limited liability of the Limited Partners or the
Partnership (as the limited partner of the Operating Partnerships) or cause the
Partnership or any Operating Partnership to be treated as an association taxable
as a corporation for federal income tax purposes, the General Partner may
transfer its interest as general partner of the Partnership and the Operating
Partnerships to a transferee certifying that it is a United States Citizen.
Without the consent of the Limited Partners, the General Partner may transfer
its interest as general partner of the Partnership or the Operating Partnerships
upon its merger or consolidation with or into another entity or upon the
transfer of all or substantially all of its assets to another entity, provided
such entity furnishes the above-described opinion of independent counsel,
certifies that it is a United States Citizen and assumes the rights and duties
of the General Partner.
 
     Each Limited Partner, and each person who becomes a Substituted Limited
Partner, grants to the General Partner a power of attorney to execute and file
certain documents required in connection with the qualification, continuance or
dissolution of the Partnership, other federal or state governmental filings, as
necessary, and the amendment of the Partnership Agreement.
 
     The General Partner may form operating partnerships (in addition to the
Operating Partnerships) on substantially the same terms as the Operating
Partnerships, in each of which the General Partner or an affiliate will act as
general partner and the Partnership will be a limited partner.
 
ALLOCATION OF PROFITS AND LOSSES -- THE PARTNERSHIP
 
     In general, each item of income, gain, loss, deduction and credit of the
Partnership is allocated 99% to the Unitholders and 1% to HEPGP. The
descriptions of the allocations of profits and losses from HEPO and EDPO below
give effect to this provision of the Partnership Agreement. Operating income
generally will be allocated first, to the holders of Class C Units to the extent
of the operating losses and deductions allocated to such holders; second, to the
holders of the Class C Units to the extent of their aggregate preference amount
(whether or not actually distributed); and third, to the holders of the Class A
and Class B Units, pro rata in accordance with their percentage interests. All
amounts to be allocated to the Unitholders as a class (A, B or C) will be
allocated between the Unitholders in accordance with their respective percentage
interests in the Partnership. Gain from a terminating capital transaction
generally will be allocated first to the holders of the Class C Units until
their positive capital account balances are equal to their unpaid preference
amounts and then to the holders of the Class A, Class B and Class C Units, pro
rata in accordance with their percentage interests.
 
     The Class C units are entitled to a preferential distribution of $1.00 per
Class C Unit per annum, payable quarterly to holders of record on March 31, June
30, September 30 and December 31 in each year. The Class C preferential
distribution is cumulative, and no distributions may be paid or declared on
Class A or Class B Units unless all accrued and unpaid distributions on the
Class C Units have been paid or declared and duly provided for. Operating
distributions generally will be made first to the holders of Class C Units to
the extent of their unpaid preference amounts and then to the holders of the
Class A and Class B Units, in accordance with their percentage interests, as
follows: (i) during any calendar quarter in which distributions on the Class A
Units are equal to $0.20 or more, the Class B Units have equal distribution
rights with the Class A Units and (ii) during any calendar quarter in which the
distributions on the Class A Units are less than $0.20 per Class A Unit, no cash
distribution will be made in connection with the Class B Units; provided,
however, the amount that would have otherwise been payable may be recouped in
any quarter that the Class A Unitholders (including the Class B Unitholders)
receive current distributions equal to or greater than $0.20 per Unit per
quarter. Liquidation proceeds, after all payments are made to the Partnership's
creditors, will be made to the Unitholders to the extent of and in proportion to
the positive balances of their respective capital accounts.
 
                                       72
<PAGE>   78
 
ALLOCATION OF PROFITS AND LOSSES -- HEPO
 
     Subject to certain exceptions discussed below, Partnership revenues and
costs attributable to production from producing oil and gas wells ("Producing
Properties") owned by HEPO will be allocated 98.01% to the Unitholders
(including HEPGP in its capacity as a Unitholder) and 1.99% to HEPGP as General
Partner. All revenues derived from the sale or other disposition of Producing
Properties will be allocated 98.01% to the Unitholders and 1.99% to HEPGP as
General Partner. The General Partner has the obligation to contribute an amount
equal to 1% of the total contributions to HEPO from time to time.
 
     The partnership agreement for HEPO provides that all drilling conducted by
HEPO will be done through a joint venture with the General Partner of HEPO that
provides for an allocation of profits and losses between the General Partner and
HEPO. Accordingly, the allocations of profits and losses from drilling
activities described in this paragraph and the following paragraph give effect
to the joint venture agreement, as well as the partnership agreements of HEP and
HEPO. All revenues and all operating costs and general and administrative costs
attributable to future drilling activities on properties that are not Producing
Properties ("Non-Producing Properties") will be allocated 79.63% to the
Unitholders and 20.37% to the general partner. All costs, other than operating
costs and general and administrative costs, including the costs attributable to
the acquisition, drilling and completing of Non-Producing Properties, will be
allocated 90.66% to the Unitholders and 9.34% to the General Partner.
 
     All revenues derived from the sale or other disposition of a Non-Producing
Property (other than depreciable equipment) having a book basis will be
allocated to the partners of the Partnership in the ratio in which the costs of
acquiring such property was allocated to the extent of such basis and any excess
revenues will be allocated first, to HEPGP until such allocation equals 20% of
the carrying value of such Non-Producing Property prior to the disposition and
then any remaining revenues will be allocated in the ratio of 79.63% to the
Unitholders and 20.37% to the general partner. Revenues and costs that are
allocable to depreciable equipment during the first five years such property is
placed in service will be, in general, allocated 90.66% to the Unitholders and
9.34% to the General Partner, with revenues derived from the sale of equipment
after the five-year period allocated 79.63% to the Unitholders and 20.37% to the
general partner.
 
ALLOCATION OF PROFITS AND LOSSES -- EDPO
 
     The provisions of the EDPO Partnership Agreement generally are the same as
the provisions of the HEPO Partnership Agreement, except (i) the General Partner
of EDPO will have no obligation to make additional capital contributions upon
the making of additional capital contributions by the Partnership, (ii) the
Partnership has an obligation to restore any negative balance in its capital
account upon the liquidation of EDPO, (iii) drilling conducted by EDPO is not
conducted through a joint venture, and (iv) to the extent discussed below, the
combined effect of the allocation of EDPO's revenues and costs to the
Partnership and HEPGP and the Partnership's allocation of revenues and costs to
the Unitholders and HEPGP will be different from the combined effect of the
allocation of HEPO's revenues and costs to the Partnership and HEPGP and the
Partnership's allocation of revenues and costs to the Unitholders and HEPGP.
 
     Generally, the general partner is allocated 2% of each item of cost and
revenue, and the remainder is allocated to the Partnership. With respect to
productive wells located on, or production from which is attributable to,
properties other than those acquired by EDPO in connection with its inception in
1985 (the "Other Properties") and that were acquired before May 9, 1990, 5% of
the costs and revenues attributable to such Productive Wells will be allocated
to the general partner and the remainder of such costs and revenues shall be
allocated to the Partnership.
 
     With respect to each development well drilled that is located on, or
production from which is attributable to, the properties acquired by EDPO in
connection with its inception in 1985 ("Initial Properties") and each
development well that is located on, or production from which is attributable
to, the Other Properties and that is drilled after the date of acquisition by
the Partnership of an interest in such well (i) 99% of the costs through
completion attributable to such development well will be allocated to the
Unitholders and 1% to the General Partner and (ii) 5% of all other costs and
revenues attributable to such development wells will be
 
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<PAGE>   79
 
allocated to the General Partner and the remainder of such costs and revenues
shall be allocated to the Unitholders.
 
     With respect to each exploratory well drilled that is located on, or
production from which is attributable to, the Initial Properties and each
exploratory well that is located on, or production from which is attributable
to, the Other Properties and that is drilled after the date of acquisition by
the Partnership of an interest in such well, (i) 10% of the costs through
completion attributable to such exploratory well will be allocated to the
General Partner and the remainder of such costs through completion will be
allocated to the Unitholders, and (ii) 25% of all other costs and revenues
attributable to such exploratory well will be allocated to the general partner
and the remainder of such costs and revenues will be allocated to the
Unitholders.
 
ALLOCATION OF INCOME TAX ITEMS
 
     In general, tax deductions and credits will be allocated in the same manner
in which the related costs are allocated and taxable income will be allocated in
the same ratio in which revenue is allocated (excluding revenues that represent
a return of basis). However, the adjusted tax basis of depletable property is
allocated in a manner to take into account the variation between the basis of
contributed property to the Partnership and its fair market value at the time of
contribution. The intent of these allocations is to effect the allocations
required by section 704(c) of the Code. See "Material Federal Income Tax
Considerations -- General Features of Partnerships Taxation -- Tax Allocations."
 
DISTRIBUTIONS
 
     The General Partner will review the Partnership's accounts on a quarterly
basis and make such distributions as it determines to be appropriate.
 
ADDITIONAL CLASSES OR SERIES OF UNITS; SALES OF OTHER SECURITIES
 
     The General Partner is authorized to cause the Partnership to issue Units
from time to time to raise additional capital, to acquire assets, to redeem or
retire Partnership debt, to adopt fringe benefit plans for employees, to comply
with the provisions of an Operating Partnership Agreement or for any other
Partnership purpose. The total number of Units of all classes that may be issued
shall not exceed 100,000,000 plus any Units issued to a former general partner
upon conversion of his general partner interests in the Partnership and the
Operating Partnerships, to limited partner interests, although such amount may
be changed by amendment to the Partnership Agreement. The General Partner has
sole and complete discretion in determining the consideration and terms and
conditions with respect to any future issuance of Units. The terms of the
Partnership Agreement do not restrict the General Partner's authority to cause
the Partnership to issue Units in one or more classes or series with such
designations, preferences and relative, participating, optional or other special
rights including, without limitation, preferential economic or voting rights, as
shall be fixed by the General Partner in the exercise of its sole and complete
discretion; provided, however, that all Units of every such class or series
shall be identical to the Class A Units, except as to the following relative
rights and preferences as to which there may be variations: (i) the allocation
to such class or series of Units of items of Partnership income, gain, loss,
deduction and credit; (ii) the right of such class or series of Units to share
in Partnership distributions; (iii) the rights of such class or series of Units
upon dissolution and liquidation of the Partnership; (iv) the price at and the
terms and conditions on which such class or series of Units may be redeemed by
the Partnership, if such Units are redeemable by the Partnership; (v) the rate
at and the terms and conditions on which such class or series of Units may be
converted into any other class or series of units if any class or series of
Units is issued with the privilege of conversion; and (vi) the right of any such
class or series of Units to vote on matters relating to the relative rights and
preferences of such class. Because the terms of any such Units may be
established by the General Partner in its sole discretion at the time of their
issuance, the effect of such issuance on holders of outstanding Units cannot be
predicted. The issuance of any additional class or classes or series of Units
preferred to outstanding Units as to any of such matters, however, may adversely
affect holders of outstanding Units to the extent of such preference. Upon the
issuance of any class or series of Units that shall not be identical to the
Class A Units, the General Partner may, without the consent of any Limited
Partner, amend any provision of the Partnership Agreement as shall
 
                                       74
<PAGE>   80
 
be necessary or desirable to reflect the issuance of such class or series of
Units and the relative rights and preferences of such class or series of Units
as to the matters set forth in the preceding sentence. The General Partner is
also authorized to cause the issuance of any other type of security of the
Partnership from time to time to partners or other persons on terms and
conditions established in the sole and complete discretion of the General
Partner. Such securities may include, without limitation, unsecured and secured
debt obligations of the Partnership, debt obligations of the Partnership
convertible into any class or series of Units that may be issued by the
Partnership, options or warrants to purchase any such class or series of Units
or any combination of any of the foregoing.
 
     No partner of the Partnership has any preemptive, preferential or other
rights pursuant to the terms of the Partnership Agreement, as presently in
effect, with respect to any securities that may be issued or sold by the
Partnership.
 
     A holder of Class B Units is entitled to convert each Class B Unit to one
publicly traded Class A Unit only upon certain conditions. Specifically, Article
XIX of the Partnership Agreement provides generally that the Class B Units will
be convertible for Class A Units on a one-for-one basis provided that prior to
such conversion the per Unit capital account of each Class B Unitholder shall be
adjusted so that it shall be equal to the capital account of each Class A Unit.
This adjustment may be required as a result of the operation of the cash
distribution subordination provisions of the Partnership Agreement pursuant to
which distributions to the Class B Unitholders may be less than distributions to
the Class A Unitholders. If, immediately prior to the conversion of the Class B
Units into Class A Units, the capital account per Class B Unit is greater than
the capital account per Class A Unit, the General Partner, as a condition to
conversion, must make an additional capital contribution to the Partnership
sufficient to enable the Partnership to make a special distribution to the Class
B Unitholders that is sufficient to cause the capital account per Class B Unit
to be the same as capital account per Class A Unit. If, on the other hand,
immediately prior to such conversion, the capital account per Class B Unit is
less than the capital account per Class A Unit, each Class B Unitholder will be
required to make an additional capital contribution to the Partnership
sufficient to make the capital account per Class B Unit the same as the capital
account per Class A Unit. Additionally, a Class A Unit converted from a Class B
Unit may not be transferred unless the Partnership has a section 754 election in
effect. See "Federal Income Tax Considerations -- Tax Consequences of the
Partnership's Operations -- Section 754 Election." The conversion rate is
subject to adjustment in certain events, such as distributions to all holders of
Class A Units payable in any class of Units and subdivisions, combinations and
reclassifications of Class A Units. During any calendar quarter in which
distributions on the Class A Units are equal to $0.20 or more, the Class B Units
have equal distribution rights with the Class A Units. During any calendar
quarter in which the distributions on the Class A Units are less than $0.20 per
Class A Unit, no cash distribution will be made connection with the Class B
Units; however, the amount that would have otherwise been payable to Class B
Unitholders may be recouped in any quarter that the Class A Unitholders
(including the Class B Unitholders) receive current distributions equal to or
greater than $0.20 per Unit per quarter. As a result of Hallwood Group's
ownership of the Class B Units, although Hallwood Group would not be able to
approve any matters required to be approved by Unitholders without the approval
of the holders of a majority of the Class A Units, Hallwood Group's ownership of
the Class B Units would very likely delay or prevent a hostile tender offer or
other attempt to remove HEPGP as General Partner or to effect any other change
in control of the Partnership.
 
AMENDMENT OF PARTNERSHIP AGREEMENT AND OPERATING PARTNERSHIP AGREEMENTS
 
     Amendments to the Partnership Agreement may be proposed by the General
Partner or by at least 10% in interest of the Limited Partners. Proposed
amendments (other than those described below) must be approved by a
Majority-In-Interest of each class of Unitholders. Unless approved by the
General Partner and by the Limited Partners holding at least 90% of each class
of Units, no amendment to Partnership Agreement will be effective unless the
Partnership has received an opinion of counsel acceptable to the General Partner
that such amendment would not result in the loss of limited liability to any
Limited Partner or cause the Partnership to be treated as an association taxable
as a corporation for federal income tax purposes.
 
     Amendments to the Operating Partnership Agreements (other than those
described below) require the consent of the Partnership, as the limited partner
of the Operating Partnerships. No amendment to the
 
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<PAGE>   81
 
Operating Partnership Agreements will be effective without the consent of both
partners of the Operating Partnerships unless the Partnership has received an
opinion of counsel acceptable to the General Partner that such amendment would
not result in the loss of limited liability of the Partnership, as the limited
partner of the Operating Partnerships, or the Limited Partners, or cause the
Operating Partnerships to be treated as an association taxable as a corporation
for federal income tax purposes.
 
     The consent of the General Partner is required if the effect of any
amendment to the Partnership Agreement or the Operating Partnership Agreements
would be to increase the duties or liabilities of the General Partner or to
change the percentage interest of the General Partner, or with respect to the
Partnership, if the Partnership has received an opinion of counsel that such
amendment would have materially adverse consequences to the General Partner.
 
     The General Partner generally may make amendments to the Partnership
Agreement and the Operating Partnership Agreements, as applicable, without the
consent of the Limited Partners if such amendments are (i) to conform the
provisions of such partnership agreements to any amendments to the Delaware Act;
(ii) of an inconsequential nature and do not adversely affect such Limited
Partners in any material respect; (iii) necessary or desirable to satisfy any
requirement, condition or guideline contained in any opinion, directive, ruling
or regulation of any federal or state agency or contained in any federal or
state statute; (iv) necessary or desirable to implement certain tax-related
provisions of the Partnership and the Operating Partnership Agreements; (v)
necessary or desirable to facilitate the trading of the Units or to comply with
any rule, regulation, guideline or requirement of any securities exchange on
which the Units are or will be listed for trading; (vi) necessary or desirable
in connection with the issuance of a separate class of securities as discussed
in "Description of the Partnership Agreements -- Additional Classes or Series of
Units; Sales of Other Securities" above; (vii) to reflect a change in the name
of the Partnership or its principal place of business; (viii) to reflect the
admission, substitution or withdrawal of partners and initial contributions,
reductions and increases in the contributions of partners; (ix) to reflect
changes necessary to qualify the Partnership and the Operating Partnerships to
do business in other jurisdictions as limited partnerships; (x) required or
contemplated by the Partnership Agreement or the Operating Partnership
Agreements; (xi) to reflect a change in applicable federal laws and regulations
of the definition of a person qualified to hold an interest in oil and gas
leases on federal lands; (xii) to reflect a change in any provisions of the
Partnership Agreement or the Operating Partnership Agreements that requires any
action to be taken by or on behalf of the General Partner or the Partnership or
Operating Partnerships pursuant to the requirements of Delaware law if the
provisions of Delaware law are changed so that the taking of such action is no
longer required; (xiii) necessary to prevent the Partnership, the Operating
Partnerships or the General Partner or its respective directors, officers,
employees or agents from being subjected to the provisions of the Investment
Company Act of 1940, as amended, or the Investment Advisors Act of 1974, as
amended; or (xiv) similar to any of the foregoing types of amendments.
 
     The provision of the Partnership Agreement requiring that two-thirds in
interest of the Limited Partners approve the removal of the General Partner may
not be amended without the approval of two-thirds in interest of the Limited
Partners.
 
MEETINGS; VOTING
 
     The General Partner does not anticipate that any meeting of Limited
Partners will be called except under extraordinary circumstances. Any action
that is required or permitted to be taken by the Limited Partners may be taken
either at a meeting of the Limited Partners or without a meeting if consents in
writing setting forth the action so taken are signed by Limited Partners owning
not less than the minimum percentage interests that would be necessary to
authorize or take such action at a meeting at which all of the Limited Partners
were present and voted. Meetings of the Limited Partners may be called by the
General Partner or by at least 10% in interest of the Limited Partners. The
General Partner will send notice of any meeting to the Limited Partners. Limited
Partners may vote either in person or by proxy at meetings. A
Majority-In-Interest represented in person or by proxy will constitute a quorum
at a meeting of Limited Partners. Except for the special amendments referred to
above under "-- Amendment of Partnership Agreement and Operating Partnership
Agreements," the removal of the General Partner and any amendment of the
percentage vote
 
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<PAGE>   82
 
required to remove the General Partner, and except as otherwise required by law,
substantially all matters submitted to the Limited Partners for determination
will be determined by the affirmative vote, in person or by proxy, of a
Majority-In-Interest of each class of Unitholders. The holders of each class of
Units each have the right to vote separately, as a class, on all issues
presented to the Limited Partners. Actions not required to be approved by a
Majority-In-Interest or higher percentage of interest may be taken by a majority
of interests present or represented by proxy and entitled to vote at a meeting
at which a quorum is present. Each owner of a Unit has a vote equal to his
percentage interest as a Limited Partner in the Partnership. See "Conflicts of
Interest." Hallwood Group holds all Class B Units and, therefore, any action
requiring approval by a percentage of the Limited Partners will require approval
by Hallwood Group.
 
INDEMNIFICATION
 
     The Partnership Agreement and the Operating Partnership Agreements provide
that the Partnership and the Operating Partnerships, respectively, will
indemnify the General Partner, its affiliates and their directors, officers,
employees and agents against any and all losses, claims, damages, liabilities,
joint and several, expenses (including reasonable legal fees and expenses),
judgments, fines, settlements and other amounts arising from any and all claims,
costs, demands, actions, suits or proceedings, civil, criminal, administrative
or investigative, in which the General Partner or such other persons may be
involved or threatened to be involved, if (i) in the case of civil actions the
General Partner or such persons acted in good faith and in a manner it
reasonably believed to be in, or not opposed to, the best interests of the
Partnership and the Operating Partnerships and the General Partner's or such
other person's conduct did not constitute gross negligence or willful or wanton
misconduct and in the case of criminal actions the General Partner or such other
person had no reasonable cause to believe the conduct was unlawful or (ii) the
General Partner or such other person has been successful in defending any such
action or proceeding. The Partnership and the Operating Partnerships are
authorized to purchase insurance against liabilities asserted against and
expenses incurred by such persons in connection with the Partnership's and the
Operating Partnerships' activities, whether or not the Partnership and the
Operating Partnerships would have the power to indemnify the person against such
liabilities under the provisions described above. The General Partner, its
affiliates and directors will not be liable for monetary damages to the
Partnership, the limited partners or assignees for errors of judgment or for any
acts or omissions of the General Partner and such other persons who acted in
good faith. If the Partnership were to make any payments to the General Partner
or other persons under this provision, the assets of the Partnership available
for distribution to Class C Unitholders would be reduced.
 
     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers or persons controlling the registrant
pursuant to the foregoing provisions, the registrant has been informed that in
the opinion of the SEC such indemnification is against public policy as
expressed in such Act and is therefore unenforceable.
 
LIMITED LIABILITY
 
     The Partnership Agreement provides that no Limited Partner shall be
personally liable for the debts of the Partnership in excess of his
contribution. Furthermore, under the Delaware Act, a limited partner, as such,
will not be liable for the obligations of a limited partnership in excess of his
contribution and his share of assets and undistributed profits unless he is also
a general partner or he takes part in the control of the business of the
partnership. Under the Delaware Act, a limited partner is otherwise entitled to
limited liability and is not responsible for the limited partnership's
obligations if the limited partner's activities in connection with the business
of the limited partnership are limited to the exercise by the limited partners,
in accordance with the provisions of the Partnership Agreement, of the rights
granted to the limited partners therein. However, because the limited
partnership statutes of certain other states in which the Partnership may do
business do not expressly allow Limited Partners to act in certain capacities or
expressly grant or deny certain voting rights and other powers that may be
exercised by Limited Partners in the Partnership, under the laws of such states,
the existence of such rights and powers in the Partnership Agreement may cause
Limited Partners, with respect to the operation of the Partnership's business in
such states, to be deemed to have taken part in the control of the Partnership's
business. This would subject all or some of the Limited Partners to a risk of
 
                                       77
<PAGE>   83
 
liability with the General Partner in excess of their respective contributions
to the Partnership and their share of assets and undistributed profits for any
civil judgment that could not be satisfied by the Partnership's assets.
 
     Moreover, the Delaware Act provides that the Partnership shall not make any
distribution to any Limited Partner to the extent that, at the time of the
distribution and after giving effect to the distribution, all liabilities of the
Partnership, other than liabilities to the General Partner and the Limited
Partners on account of their Partnership interests and liabilities for which the
recourse of creditors is limited to specified property of the Partnership,
exceed the fair value of the Partnership's assets, except that the fair value of
property that is subject to a liability for which the recourse of creditors is
limited shall be included in the assets of the Partnership only to the extent
that the fair value of that property exceeds that liability (the "Prohibition").
A Limited Partner who receives a distribution in violation of the Prohibition or
if the distribution otherwise violates the Partnership Agreement or other
provisions of applicable law or the Partnership Agreement, and who knows at the
time of the distribution that the distribution violates the Prohibition, the
Partnership Agreement or other provisions of applicable law, will be liable to
the Partnership for the amount of the distribution. A Limited Partner who
receives a distribution in violation of the Prohibition, the Partnership
Agreement or other applicable law and who does not know at the time of the
distribution that the distribution violates the Prohibition, the Partnership
Agreement or other applicable law shall not be liable under the Delaware Act for
the amount of the distribution. Under the Delaware Act, unless otherwise agreed,
a Limited Partner who receives a distribution from the Partnership has no
liability under the Delaware Act or other applicable law for the amount of the
distribution after the expiration of three years from the date of the
distribution.
 
     At such time as a person (who is not also a General Partner and who does
not take part in the control of the business of the Partnership) is admitted or
substituted as a Limited Partner in the Partnership, such person possessing or
exercising the voting rights and other powers or having acted in the capacities
set forth in the Partnership Agreement will not be legally obligated under the
Delaware Act for the liabilities of the Partnership in an amount in excess of
his contribution or his share of assets and undistributed profits (or in the
case of a Substituted Limited Partner, such contribution of his
predecessor-in-interest) to the Partnership. Neither the possession nor the
exercise of such voting rights or other powers of Limited Partners constitutes
participation in the control of the business of the Partnership.
 
BOOKS AND REPORTS
 
     The General Partner is required to keep complete and accurate books of the
Partnership's and the Operating Partnerships' respective businesses at the
principal offices of each respective partnership. The books of the Partnership
and the Operating Partnerships will be maintained for financial reporting
purposes on an accrual basis or a cash basis, as the General Partner may, in its
sole discretion, decide and shall be adjusted periodically to an accrual basis
for reporting in accordance with generally accepted accounting principles. The
fiscal year of the Partnership and the Operating Partnerships is the calendar
year. Limited Partners will have the right to inspect and copy any of the
Partnership's books for a proper purpose related to a Limited Partner's interest
in the Partnership, but any such inspection and copying shall be at the Limited
Partner's expense.
 
     The General Partner will furnish each Unitholder of record as of the last
day of the fiscal year, within 120 days after the close of each fiscal year, an
annual report containing financial statements of the Partnership for the past
fiscal year, presented in accordance with generally accepted accounting
principles, including a balance sheet and statements of income, partners' equity
and changes in cash flows. The financial statements will be audited by a firm of
independent public accountants selected by the General Partner. Within 60 days
after the close of each calendar quarter (except the fourth quarter), the
General Partner will furnish each Unitholder of record as of the last day of
such calendar quarter with a quarterly report containing such financial and
other information as the General Partner deems appropriate.
 
     The General Partner will use its best efforts to furnish each Unitholder
within 75 days, and shall furnish within 90 days, after the close of each
taxable year, information reasonably required for federal and state income tax
purposes. Such information will be furnished in a summary form so that certain
complex calculations normally required of partners can be avoided. The General
Partner's ability to furnish such
 
                                       78
<PAGE>   84
 
summary information to Unitholders will depend on the cooperation of brokers in
supplying certain information to the General Partner.
 
TERMINATION, DISSOLUTION AND LIQUIDATION
 
     The Partnership and the Operating Partnerships will continue until December
31, 2035, unless sooner dissolved or terminated. The Partnership and the
Operating Partnerships can be dissolved upon (i) the withdrawal of the General
Partner or any other event that results in its ceasing to be the General Partner
(other than by reason of a permitted transfer of its general partner's interest
or a withdrawal occurring after, or a removal effective upon or after, selection
of a successor by a Majority-In-Interest), (ii) the bankruptcy of the General
Partner, (iii) the filing of a certificate of dissolution or the revocation of
the certificate of incorporation of the General Partner, (iv) an election to
dissolve by the General Partner that is approved by a vote or consent of a
Majority-In-Interest or (v) a written determination by the General Partner that
projected future revenues of the Partnership will be insufficient to enable
payment of projected Partnership costs and expenses or, if sufficient, will be
such that continued operation is not in the best interests of the Partners. In
the event of dissolution caused by (i), (ii) or (iii) above, a
Majority-In-Interest may elect to reconstitute the business of the Partnership
by forming a new limited partnership on the same terms as are set forth in the
Partnership Agreement. Any such election must also provide for the election of a
general partner to the reconstituted partnership. If such an election is made,
all of the Limited Partners will continue as limited partners of the
reconstituted partnership, although Limited Partners not consenting to the
continuation are entitled to withdraw on the terms set forth in the Partnership
Agreement. No such election may be made unless prior thereto the Partnership has
received an opinion of counsel acceptable to the General Partner that (i) the
election may be made without the concurrence of all partners, (ii) the limited
partners in the reconstituted Partnership will have the same limited liability
as the Limited Partners in the Partnership, and (iii) neither the Partnership
nor the reconstituted limited partnership would be treated as an association
taxable as a corporation for federal income tax purposes upon the exercise of
such right to continue. Upon dissolution, unless an election to continue the
business of the Partnership is made, the General Partner or other person
authorized to wind up the affairs of the Partnership will proceed to liquidate
the Partnership's assets and apply the proceeds of liquidation in the order of
priority set forth in the Partnership Agreement, which permits distributions of
assets in kind if, in the opinion of the person authorized to wind up the
affairs of the Partnership, the immediate sale of all or any part of the
Partnership's assets would be impracticable or would cause undue loss to the
Partners.
 
                         UNITS ELIGIBLE FOR FUTURE SALE
 
     The Class C Units sold in the Offering will generally be freely
transferable without restriction or further registration under the Securities
Act, except that any Class C Units owned by an "affiliate" of the Partnership
(as that term is defined in the rules and regulations under the Securities Act)
may not be resold publicly except in compliance with the registration
requirements of the Securities Act or pursuant to an exemption therefrom under
Rule 144 thereunder ("Rule 144") or otherwise. Rule 144 permits securities
acquired by an affiliate of the issuer in an offering to be sold into the market
in an amount that does not exceed, during any three-month period, the greater of
(i) 1% of the total number of such securities outstanding or (ii) the average
weekly reported trading volume of the Class C Units for the four calendar weeks
prior to such sale. Sales under Rule 144 are also subject to certain manner of
sale provisions, notice requirements and the availability of current public
information about the Partnership. A person who is not deemed to have been an
affiliate of the Partnership at any time during the three months preceding a
sale, and who has beneficially owned his Class C Units for at least two years,
would be entitled to sell such Class C Units under Rule 144 without regard to
the public information requirements, volume limitations, manner of sale
provisions or notice requirements of Rule 144.
 
     The Partnership may issue without a vote of the Unitholders up to a total
of 100,000,000 Units of all classes. See "Description of The Partnership
Agreements -- Additional Classes or Series of Units; Sales of Other Securities."
 
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<PAGE>   85
 
     The Partnership, the Operating Partnership and the General Partner have
agreed not to (i) offer, sell, contract to sell or otherwise dispose of or
announce the offering of any Class C Units or any securities that are
convertible into, or exercisable or exchangeable for, Class C Units or any
securities that are senior to or pari passu with Class C Units or (ii) grant any
options or warrants to purchase Class C Units for a period of 180 days after the
date of this Prospectus without the prior written consent of EVEREN Securities,
Inc.
 
                   MATERIAL FEDERAL INCOME TAX CONSIDERATIONS
 
     The following is a discussion of the material federal income tax
considerations associated with the Offering. It is based upon the Code, the
Regulations, published revenue rulings and procedures of the IRS and judicial
decisions, all as in effect on the date of this Prospectus. Any of such
authorities could be changed at any time and any such changes could
significantly modify this discussion. There is no assurance that additional
legislative, judicial, or administrative changes will not occur in the future.
Additionally, no rulings have been requested from the IRS concerning any matters
discussed herein.
 
     The discussion below is directed primarily to the typical unitholder
acquiring Class C Units who is an individual and a United States Citizen (except
as otherwise provided herein, the term Unitholder will include holders of any
Units in the Partnership). Various additional complexities or considerations are
applicable to a Unitholder who is a partnership, corporation, trust, estate,
tax-exempt entity, or foreign person or who may be subject to certain facts and
circumstances that are applicable only to such person and that may give rise to
additional considerations. The following discussion generally does not address
any of those additional considerations. In addition, the Offering may have state
and local tax consequences to a particular Unitholder that are not discussed
below. Accordingly, each Unitholder is urged to consult his tax advisor prior to
participating in the Offering with specific reference to the effect of his
particular facts and circumstances on the matters discussed herein.
 
     The federal income tax consequences of the Offering and the federal income
tax treatment of Class C Unitholders depend in some instances on determinations
of fact and interpretations of complex provisions of federal income tax laws for
which no clear precedent or authority may be available. HEPGP, in determining
the Partnership's taxable income, allocations, basis adjustments and asset
valuations, must make determinations in its capacity as general partner of the
Partnership that could affect the Class C Unitholders. Where appropriate, HEPGP
will act upon the advice of legal counsel or other professional tax advisors in
making such interpretations and determinations.
 
OPINION OF COUNSEL
 
     Except as expressly provided below, the following discussion represents the
opinion of Jenkens & Gilchrist, a Professional Corporation, counsel to the
Partnership ("Counsel"), of the material federal income tax considerations that
are associated with the Offering and that are applicable to a Class C Unitholder
that is an individual and a United States citizen. The opinions of Counsel are
based on factual representations and assumptions and subject to the
qualifications set forth in the discussion that follows. In addition, such
opinions are based upon existing provisions of the Code and the Regulations,
existing rulings and procedures of the IRS and existing court decisions and
there can be no assurances that any of such authorities will not be changed in
the future. The opinions set forth herein represent only Counsel's best legal
judgment as to the particular issues and are not binding on the IRS or the
courts. No ruling from the IRS has been requested or received with respect to
any issues discussed herein and no assurance can be provided that the opinions
and statements set forth herein would be sustained by a court if challenged by
the IRS.
 
TAX SHELTER NOT A SIGNIFICANT OR INTENDED BENEFIT OF INVESTMENT IN THE
PARTNERSHIP
 
     A person who acquires a Class C Unit in the Partnership pursuant to the
Offering is advised that tax shelter of income unrelated to the Partnership is
not a significant or intended feature of an investment in the Partnership. HEPGP
does not expect that a Unitholder acquiring Class C Units in the Partnership
will realize any significant tax shelter from an investment in the Class C
Units.
 
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<PAGE>   86
 
TAX CLASSIFICATION OF THE PARTNERSHIP
 
     The applicability of the federal income tax consequences described herein
depends on the treatment of the Partnership, EDPO and HEPO as partnerships for
federal income tax purposes and not as associations taxable as corporations. In
the event the Partnership, HEPO or EDPO should be taxed as a corporation rather
than as a partnership, the effect thereof would substantially reduce the
after-tax economic return of an investment in the Partnership. For federal
income tax purposes, a partnership is not a taxable entity but rather a conduit
through which all items of partnership income, gain, loss, deduction and credit
are passed to its partners. Thus, income and deductions resulting from
partnership operations are allocated to the partners and are taken into account
by the partners on their individual federal income tax returns. In addition, a
distribution of money from a partnership to a partner generally is not taxable
to the partner unless the amount of the distribution exceeds the partner's tax
basis in his interest in the partnership. If an organization formed as a
partnership were classified for federal income tax purposes as an association
taxable as a corporation, the organization would be a separate taxable entity.
In such a case, the organization, rather than its members, would be taxed on the
income and gains and would be entitled to claim the losses and deductions
resulting from its operations. A distribution from the organization to a member
would be taxable to the member in the same manner as a distribution from a
corporation to a shareholder (i.e., as ordinary income to the extent of the
current and accumulated earnings and profits of the organization, then as a
nontaxable reduction of basis to the extent of the member's tax basis in his
interest in the organization and finally as gain from the sale or exchange of
the member's interest in the organization).
 
     An entity generally will be classified as a partnership rather than as a
corporation for federal income tax purposes if the entity (i) is treated as a
partnership under Treasury Regulations, effective January 1, 1997, relating to
entity classification (the "Check-the-Box Regulations") and (ii) is not a
"publicly traded partnership" taxed as a corporation under Section 7704 of the
Code. In general, under the Check-the-Box Regulations, an unincorporated
domestic entity with at least two members may elect to be classified either as
an association taxable as a corporation or as a partnership. If such an entity
fails to make any election, it will be treated as a partnership for federal
income tax purposes. Special rules apply to entities, such as the Partnership,
HEPO, and EDPO, in existence on January 1, 1997. The federal income tax
classification of an entity that was in existence prior to January 1, 1997 will
be respected for all periods prior to January 1, 1997 if (i) the entity had a
reasonable basis for its claimed classification, (ii) the entity and all members
of the entity recognized the federal tax consequences of any changes in the
entity's classification within the 60 months prior to January 1, 1997, and (iii)
neither the entity nor any of its members were notified in writing on or before
May 8, 1996 that the classification of the entity was under examination. For
periods after January 1, 1997, an entity that was in existence prior to January
1, 1997 will have the same classification (e.g., partnership or corporation)
that the entity claimed for the prior period unless it elects otherwise.
 
     To be taxed as a partnership for federal income tax purposes, the
Partnership, in addition to qualifying as a partnership under the Check-the-Box
Regulations, must not be taxed as a corporation under Section 7704 of the Code
dealing with publicly traded partnerships. The Partnership (but not HEPO or
EDPO) constitutes a "publicly traded partnership" within the meaning of Section
7704 of the Code. Section 7704 of the Code taxes certain publicly traded
partnerships as corporations. However, an exception exists with respect to
publicly traded partnerships of which 90 percent or more of gross income for
each taxable year consists of "qualifying income." For this purpose, qualifying
income includes income and gains derived from the exploration, development,
production, processing, refining, transportation (including pipelines) or
marketing of oil and gas and gains from the sale or disposition of assets used
in such activities ("Qualifying Income"). The Partnership has represented that,
other than interest income derived from short-term investments, the
Partnership's only source of income is its distributive share of the Operating
Partnerships' income. Each Operating Partnership has represented that in excess
of 90% of its gross income will be Qualifying Income for purposes of Section
7704 of the Code. Based upon these representations, at least 90% of the
Partnership's gross income will constitute Qualifying Income.
 
     If (a) a publicly traded partnership fails to meet such gross income test
for any taxable year, (b) such failure is inadvertent, as determined by the IRS
and (c) the partnership takes steps within a reasonable time to once again meet
the gross income test and agrees to make such adjustments and pay such amounts
 
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<PAGE>   87
 
(including the amount of tax liability that would be imposed on the partnership
if it were treated as a corporation during the period of inadvertent failure) as
are required by the IRS, such failure will not cause the partnership to be taxed
as a corporation. If the Partnership fails to meet the gross income test with
respect to any taxable year, HEPGP, as general partner of the Partnership, will
use its best efforts to assure that the Partnership will qualify under the
inadvertent failure exception discussed above. The provision taxing certain
publicly traded partnerships as corporations (Section 7704 of the Code)
generally is not applicable to "existing partnerships" (i.e., generally,
partnerships that were publicly traded partnerships on December 17, 1987) until
January 1, 1998. However, a partnership will no longer qualify as an "existing
partnership" if its adds a "substantial new line of business" (a "Substantial
New Line of Business"). For this purpose, (i) a new line of business is any
business activity of the partnership not closely related to a pre-existing
business to the extent that such activity generates income other than Qualifying
Income; and (ii) such new line of business will be treated as substantial as of
the earlier of (a) the taxable year in which the partnership derives more than
15% of its gross income from that line of business; or (b) the taxable year in
which the partnership directly uses in that line of business more than 15% (by
value) of its total assets. For this purpose, the Partnership should be
considered to be an "existing partnership." Thus, the provisions of Section 7704
of the Code will become applicable to the Partnership for taxable years
beginning after December 31, 1997.
 
     Counsel has opined that the Partnership, HEPO and EDPO each will be
classified as a partnership for federal income tax purposes and will not be
classified as an association taxable as a corporation. Such conclusion is based
in part upon the accuracy of the following representations made by HEPGP and the
Partnership:
 
          a. That the Partnership, HEPO and EDPO will be operated in accordance
     with (a) all applicable partnership statutes, (b) the Partnership Agreement
     and (c) this Prospectus.
 
          b. That, from December 17, 1987 through December 31, 1997, each of
     Hallwood Energy Partners, L.P., a Delaware limited partnership, and Energy
     Development Partners, Ltd., a Colorado limited partnership, as such
     entities existed prior to their merger in 1990, and the Partnership for all
     times thereafter, did not and will not add any Substantial New Line of
     Business.
 
          c. That for each taxable year beginning after December 31, 1997, less
     than 10 percent of the gross income of the Partnership will be derived from
     sources other than Qualifying Income.
 
          d. That neither the Partnership, nor HEPO and EDPO was notified in
     writing on or before May 8, 1996 that its classification was under
     examination.
 
          e. That neither the Partnership, HEPO nor EDPO will make an election
     under the Check-the-Box Regulations to treat itself as an association
     taxable as a corporation.
 
     The following discussion assumes that the Partnership, HEPO and EDPO each
is, and will continue to be, treated as a partnership for federal income tax
purposes.
 
TAX CONSEQUENCES OF THE OFFERING
 
     General. Section 721(a) of the Code provides that, in general, no gain or
loss is recognized by a partnership or by any of its partners upon a
contribution of property to the partnership in exchange for an interest in the
partnership. Pursuant to the Offering, the Partnership will issue Class C Units
to each person who contributes cash to the Partnership. Section 721(a) of the
Code will apply to the transfers of cash to the Partnership in exchange for the
Class C Units issued pursuant to the Offering.
 
     Tax Consequences to the Partnership. Under Section 721(a) of the Code, the
Partnership will recognize no gain or loss upon its receipt of cash pursuant to
the Offering.
 
GENERAL FEATURES OF PARTNERSHIP TAXATION
 
     Status as Partners. A person who (a) acquires beneficial ownership of Class
C Units pursuant to the Offering and who has executed a Transfer Application and
either has been admitted or is awaiting admission to the Partnership as a
limited partner or (b) acquires beneficial ownership of Class C Units pursuant
to the Offering and whose Class C Units are held by a nominee (so long as such
person has the right to direct the
 
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<PAGE>   88
 
nominee in the exercise of all substantive rights attendant to the ownership of
such Class C Units) will be treated as a partner of the Partnership for federal
income tax purposes. However, a person who is entitled to execute and deliver a
Transfer Application but who fails to do so or whose Class C Units are held by a
nominee where such person does not have the right to direct the nominee in the
exercise of all substantive rights attendant to the ownership of such Class C
Units may not be treated as a partner of the Partnership for federal income tax
purposes. If a Class C Unitholder is not treated as a partner for federal income
tax purposes, he would not be taxed in accordance with the principles discussed
herein. In addition, such person would not be allocated any item of Partnership
income, gain, loss or deduction and any cash distributions from the Partnership
received by such person would likely be taxed as ordinary income.
 
     A Unitholder whose Units are loaned to a "short seller" to cover a short
sale of the Units may be considered as having disposed of ownership of those
Units. In such a case, such Unitholder would no longer be a partner for federal
income tax purposes with respect to such Units during the period of the loan and
may recognize gain or loss from the disposition. During such period, items of
Partnership income, gain, loss or deduction would not be allocable to such
Unitholder and any cash distributions from the Partnership received by such
Unitholder with respect to such Units would appear to be fully taxable as
ordinary income. The IRS may also contend that a loan of Units to a "short
seller" constitutes a taxable exchange. Counsel is unable to opine regarding the
status of a Unitholder as a partner in the Partnership during the period of the
loan to a "short seller." Unitholders desiring to assure their status as
partners and avoid the risk of gain recognition should modify any applicable
brokerage account agreements to prohibit their brokers from borrowing their
Units.
 
     The Taxpayer Relief Act of 1997 (the "TRA of 1997") also contains
provisions affecting the taxation of certain financial products and securities,
including partnership interests, by treating a taxpayer as having sold an
"appreciated" partnership interest (one in which gain would be recognized if it
were sold, assigned or otherwise terminated at its fair market value) if the
taxpayer or related persons enter into a short sale of, an offsetting notional
principal contract with respect to or a futures or forward contract to deliver
the same or substantially identical property, or in the case of an appreciated
financial position that is a short sale or offsetting notional principal
contract or futures or forward contract, the taxpayer or related persons
acquire, the same or substantially identical property. The Secretary of the
Treasury is also authorized to issue regulations that treat a taxpayer that
enters into transactions or positions that have substantially the same effect as
the preceding transactions as having constructively sold the financial position.
 
     The discussion below is applicable only to, and references to Unitholders
in connection with federal income tax matters refer only to, persons who are
considered to be partners of the Partnership for federal income tax purposes.
 
     Taxation of Partners. For each taxable year, each Unitholder is required to
take into account on his individual federal income tax return his distributive
share of the Partnership's income, gains, losses and deductions for such taxable
year. Each Unitholder is required to take such distributive share into account
in computing his federal income tax liability regardless of whether he has
received or will receive any cash distributions from the Partnership. Therefore,
he may be required to report and pay tax on income that the Partnership
recognizes during the taxable year without receiving any cash distribution from
the Partnership. In addition, because cash distributions will be made only to
those persons who are Unitholders of record on a specified date during each
quarter, while the Partnership's income, gains, losses and deductions are
allocated for federal income tax purposes to persons who are record holders of
Units on the last day of the month preceding the month in which the income,
gains, losses and deductions accrue, income may be allocated to Unitholders who
receive no cash distributions in respect of that income.
 
     A distribution of cash to a Unitholder generally is not taxable to such
Unitholder unless the amount of such distribution exceeds the Unitholder's basis
in his Units. Distributions are not expected to exceed a Class C Unitholder's
basis in his Class C Units. If an excess distribution occurred, however, such
excess should be taxable as capital gain, assuming the Units in respect of which
the distribution was made are held as a capital asset. If, however, any portion
of such distribution is considered to be in exchange for the Unitholder's
interest in ordinary income items (including potential recapture of depletion or
intangible drilling
 
                                       83
<PAGE>   89
 
and development costs), such portion will be taxed as ordinary income even if
the amount of the distribution did not exceed the Unitholder's tax basis in his
Units. In addition, a Unitholder could recognize income if cash distributions
made to him cause his at-risk amount to be reduced below zero. See "Material
Federal Income Tax Considerations General Features of Partnership
Taxation -- Limitations on Deduction of Losses -- At-Risk Limitation."
 
     If the Partnership, HEPO or EDPO have any nonrecourse liabilities (i.e.,
liabilities for which no partner, including the general partner, is personally
liable) outstanding at any time, each Unitholder, for purposes of computing his
tax basis in his Units, will be allocated a share of such nonrecourse
liabilities (generally based on his proportionate interest in the Partnership's
profits). See "Federal Income Tax Considerations -- General Features of
Partnership Taxation -- Computation of Basis" below. Any subsequent decrease in
a Unitholder's share of such nonrecourse liabilities will be treated as a
distribution of cash to the Unitholder. A decrease in a Unitholder's
proportionate share of the Partnership's profits resulting from an issuance of
additional Units by the Partnership will result in such a decrease in such
Unitholder's share of nonrecourse liabilities and, thus, a deemed distribution
to such Unitholder. Such deemed distribution may result in ordinary income to
the Unitholder to the extent that he is considered to have exchanged for the
deemed distribution a portion of his interest in the Partnership's ordinary
income items (including potential recapture of depletion or intangible drilling
and development costs). The Partnership, HEPO and EDPO have not incurred, and
HEPGP does not currently intend to incur nonrecourse debt.
 
     Computation of Basis. A Unitholder who acquires Class C Units pursuant to
the Offering generally will have an initial tax basis in such Class C Units
equal to the amount of the Unitholder's contribution of money to the Partnership
and the Unitholder's share of the Partnership's nonrecourse liabilities, if any.
That initial tax basis will be increased by the Unitholder's share of the
Partnership's income and gains (including gain on the sale of an oil or gas
property by the Partnership, as separately computed by the Unitholder) and his
share of Partnership nonrecourse liabilities, if any. The tax basis will be
decreased (but not below zero) by the Unitholder's share of the Partnership's
losses and deductions (including loss on the sale of an oil or gas property by
the Partnership, as separately computed by the Unitholder), the amount of any
distributions from the Partnership received by him (including any decrease in
his share of Partnership nonrecourse liabilities, if any) and the amount of his
depletion deductions with respect to the Partnership's properties (to the extent
that such depletion deductions do not exceed his allocable share of the tax
basis of such property). It should be noted that a Unitholder's tax basis in his
Units will be decreased by his share of the Partnership's losses even though
those losses may not be currently deductible by him because of the at-risk or
passive loss limitations.
 
     Limitations on Deduction of Losses. The General Partner does not anticipate
that holders of Class C Units will be allocated losses and deductions of the
Partnership in excess of their allocable share of the income and gain of the
Partnership. However, the ability of a Unitholder to deduct his share of the
Partnership's net tax losses or deductions (if any) during any particular year
is subject to the basis limitation, the at-risk limitation, the passive loss
limitation and the limitation on the deduction of investment interest.
 
     (a)  Basis Limitation. A Unitholder may not deduct from his taxable income
any amount attributable to his share of the Partnership's losses or deductions
that is in excess of the tax basis of his Units at the end of the Partnership's
taxable year in which the losses or deductions occur. For a discussion of the
computation of a Unitholder's tax basis in his Units, see "Material Federal
Income Tax Considerations -- General Features of Partnership
Taxation -- Computation of Basis" above. Any losses or deductions that are
disallowed by reason of the basis limitation may be carried forward and deducted
in later taxable years to the extent that the Unitholder's tax basis in his
Units is increased in such later years (subject to application of the other
limitations discussed below).
 
     (b)  At-Risk Limitation. A Unitholder (other than corporations that are
neither S corporations nor certain closely-held corporations) may not deduct
from his taxable income any amount attributable to his share of the
Partnership's losses or deductions that is in excess of the amount for which he
is considered to be at-risk with respect to the Partnership's activities at the
end of the Partnership's taxable year in which the losses or deductions occur. A
Unitholder who acquires his Class C Units pursuant to the Offering generally
 
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<PAGE>   90
 
will have an initial at-risk amount with respect to the Partnership's activities
equal to the amount of cash contributed to the Partnership in exchange for his
Class C Units, assuming such Class C Unitholder uses his personal funds to make
such contribution or borrows the funds on a recourse basis from a lender
unrelated to the Partnership. This initial at-risk amount will be increased by
the Partner's share of the Partnership's income and gains and the amount by
which the Partner's deductions for percentage depletion with respect to an oil
or gas property owned by the Partnership exceed the Partner's allocable share of
the tax basis of the property, and will be decreased by their share of the
Partnership's losses and deductions and the amount of cash distributions made to
the Partner. Liabilities of the Partnership, whether recourse or nonrecourse,
generally will not increase a Class C Unitholder's amount at-risk with respect
to the Partnership.
 
     Any losses or deductions that may not be deducted by reason of the at-risk
limitation may be carried forward and deducted in later taxable years to the
extent that the Class C Unitholder's at-risk amount is increased in such later
years (subject to application of the other limitations). Upon the taxable
disposition of a Class C Unit, any gain recognized by a Class C Unitholder
generally can be offset by losses that have been suspended by the at-risk
limitation. Any excess loss (above such gain) previously suspended by the
at-risk limitation is no longer utilizable.
 
     Generally, the at-risk limitation is to be applied on an
activity-by-activity basis and, in the case of oil and gas properties, each
property is treated as a separate activity. Thus, an investor's interest in each
oil or gas property is treated separately so that a loss from any one property
is limited to the at-risk amount for that property and not the at-risk amounts
for the investor's other oil or gas properties. It is uncertain how this rule is
implemented in the case of multiple oil and gas properties owned by a single
partnership. However, for taxable years ending on or before the date on which
further guidance is published, the IRS will permit aggregation of all properties
owned by a partnership in computing a partner's "at-risk" limitation with
respect to such partnership. Moreover, any rules that would impose certain
limitations and conditions on the ability of taxpayers to aggregate such
activities will be effective only for any taxable year ending after the rules
are issued. Thus, it is not known to what extent aggregation will be permitted
after 1996.
 
     If the amount for which a Class C Unitholder is considered to be at risk
with respect to the activities of the Partnership is reduced below zero (e.g.,
by distributions), the Class C Unitholder will be required to recognize ordinary
income to the extent that his at-risk amount is reduced below zero. The amount
of ordinary income so recognized, however, cannot exceed the excess of the
amount of the Partnership's losses and deductions previously claimed by the
Class C Unitholder over any amounts of ordinary income previously recognized
pursuant to this rule. The losses and deductions so "recaptured" will again
become available as deductions when, as and if the Class C Unitholder's at-risk
amount increases above zero.
 
     (c)  Passive Loss Limitation. Even if the deductibility of a Class C
Unitholder's share of the Partnership's losses is not limited by such Class C
Unitholder's adjusted basis or at-risk amount, such losses will be subject to
the passive loss rules if the Class C Unitholder is an individual, estate,
trust, closely held corporation or personal service corporation. Generally, a
taxpayer's passive losses are deductible only to the extent of the taxpayer's
passive income; such losses cannot be deducted against the taxpayer's salary,
portfolio income, or active business income. A Class C Unitholder's investment
in Class C Units is considered to be a passive investment, and therefore, the
losses and income attributable to such Class C Units should be considered to be
passive losses and passive income, respectively.
 
     Generally, passive losses arising from an investment may be used to offset
passive income arising from any passive investment. Similarly, passive income
arising from an investment generally may be offset by passive losses from any
passive investment. However, the passive loss limitations are applied separately
with respect to each publicly traded partnership, such as the Partnership.
Consequently, passive losses arising from an investment in Units must be
suspended, carried forward and used to offset the passive income, if any, that
arises from such investment in Units in subsequent taxable years; such losses
may not be used to offset the income arising from any other passive investment.
Similarly, passive income arising from an investment in Units may be offset by
passive losses only if such losses arise from an investment in Units; to the
extent that the passive income arising from an investment in Units exceeds the
losses arising therefrom, such income may not be offset with passive losses from
other passive investments.
 
                                       85
<PAGE>   91
 
     Because of the application of the passive loss rules to the income and
losses generated by the Partnership, an investment in Class C Units will not
give rise to losses that may be used to offset income from any source (whether
an active or passive investment) other than the Class C (or other) Units.
 
     When a Class C Unitholder sells all his Class C (and all other) Units in a
fully taxable transaction to someone other than a related party, any losses
arising from the Partnership that have been suspended by reason of the passive
loss limitation become fully deductible. If the Class C Unitholder sells only
part of his Units, such suspended passive losses do not become fully deductible
at that time and any gain recognized on such partial sale is treated as passive
income.
 
     The Partnership's portfolio income may not be offset by losses generated by
the Partnership. Portfolio income includes interest, dividends, royalties and
gains from the sale of assets that generate portfolio income. Portfolio income
is not treated as passive income, but instead must be accounted for separately.
Consequently, the Partnership's portfolio income will retain its character as
portfolio income in the hands of the Class C Unitholders and will not be
available to offset passive losses (either from the Partnership or otherwise).
 
     (d)  Nonbusiness Interest Limitation. Generally, a non-corporate taxpayer's
"investment interest" may be deducted only to the extent of the taxpayer's "net
investment income." Any investment interest that is not deductible solely by
reason of this limitation may be carried forward to later taxable years and
treated as investment interest in such later years. In general, investment
interest is any interest paid or accrued on debt incurred or continued to
purchase or carry property held for investment, and net investment income
includes gross income and certain net gain from property held for investment,
reduced by expenses that are directly connected with the production of such
income and gains. Under Treasury Regulations which the IRS has announced that it
will issue, a partner's net passive income from a publicly traded partnership
(such as the Partnership) will be treated as investment income for purposes of
the investment interest limitation.
 
     To the extent that interest is attributable to a passive activity (which
may include interest incurred or deemed to have been incurred by a Class C
Unitholder to acquire or carry his Class C Units and a Class C Unitholder's
share of interest incurred by the Partnership in connection with its
operations), it is treated as a passive activity deduction and is subject to
limitation under the passive loss limitation discussed above and not under the
investment interest limitation. In addition, the effect of the investment
interest limitation on a particular Unitholder will depend on such Unitholder's
personal tax situation. Accordingly, each Class C Unitholder should consult with
his tax advisor.
 
     Tax Allocations. The following is a discussion of the tax allocations of
items of Partnership income, gain, loss, deduction and credit.
 
     (a)  General. As noted above, each Class C Unitholder will be required to
take into account in determining his federal income tax liability his
distributive share of each item of Partnership income, gain, loss, deduction or
credit for the taxable year of the Partnership ending with or within his taxable
year, regardless of whether such Unitholder has received or will receive any
distributions of cash or other property from the Partnership. Under Section
704(b) of the Code, the allocations in a partnership agreement control the tax
allocation of partnership income, gains, losses, deductions and credits, unless
such allocations do not have "substantial economic effect". If the allocations
provided in a partnership agreement do not have "substantial economic effect," a
partner's distributive share will be determined in accordance with his interest
in the partnership, determined by taking into account all facts and
circumstances.
 
     An allocation to a partner will be considered to have "economic effect"
only if the partner to whom the allocation is made will receive the economic
benefit or bear the economic burden corresponding to such allocation. Generally,
an allocation will have economic effect if under the partnership agreement (i)
the partners' capital accounts are determined and maintained throughout the full
term of the partnership in accordance with specific accounting rules, (ii)
liquidation proceeds are required to be distributed in accordance with the
partners' capital account balances and (iii) the partners are liable to the
partnership to restore any deficit in their capital accounts upon liquidation of
the partnership. If the first two of these requirements are met but the partner
to whom an allocation is made is not obligated to restore the full amount of any
deficit balance in his capital account, the allocation still will be considered
to have "economic effect" to
 
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<PAGE>   92
 
the extent the allocation does not cause or increase a deficit balance in the
partner's capital account (determined after reducing that account for certain
"expected" adjustments, allocations and distributions specified by the Treasury
Regulations), but only if the partnership agreement contains a "qualified income
offset" provision. A qualified income offset provision requires that, in the
event of any unexpected distribution or specified adjustments or allocations to
a partner that causes or increases a deficit balance in such partner's capital
account, there must be an allocation of income or gain to that partner that
eliminates the resulting capital account deficit as quickly as possible.
 
     The economic effect of an allocation will be deemed "substantial" if there
is a reasonable possibility that the allocation will affect substantially the
dollar amounts to be received by the partners from the partnership, independent
of tax consequences. The economic effect of an allocation, however, is not
substantial if it appears at the time the allocation is included in the
partnership agreement that the inclusion of that particular allocation may cause
the after-tax economic consequences of at least one partner to be enhanced, in
present value terms, and there is a strong likelihood that the inclusion of such
allocation will not diminish substantially the after-tax consequences of any
partner, in present value terms.
 
     If a partnership allocation fails to meet the substantial economic effect
test, the allocation nevertheless will be valid if, taking into account all the
facts and circumstances, the allocation is in accordance with the partners'
interests in the partnership. The partners' interests in the partnership are to
be determined based on the manner in which the partners have agreed to share the
economic benefit or burden with respect to the income, gain, loss, deduction or
credit that is allocated. In making such determination, relevant factors include
the partners' relative contributions to the partnership, their interests in
economic profits and losses, cash flow and other nonliquidating distributions
and the rights to distributions of capital and other property upon liquidation.
 
     (b)  Allocations Under the HEP Partnership Agreement. The manner in which
items of income, gain, loss and deduction of the Partnership are allocated for
federal income tax purposes is set forth in the Partnership Agreement. See
"Description of the Partnership Agreements." In general, each item of operating
income, gain, loss, deduction and credit of the Partnership is allocated 99% to
the Unitholders and 1% to HEPGP. Operating income generally will be allocated
first to the holders of Class C Units to the extent of the operating losses and
deductions allocated to such holders; second, to the holders of the Class C
Units to the extent of their aggregate preference amount (as described below),
whether or not actually distributed; and third, to the holders of the Class A
and Class B Units, pro rata in accordance with their percentage interests. If a
Class C Unitholder receives actual cash distributions in excess of the operating
income allocated to him, he will be allocated gross income in an amount equal to
such excess. Operating loss generally will be allocated first to the holders of
Class A and B Units until their Adjusted Capital Accounts (as defined in the
Agreement) are reduced to zero; second, to the holders of Class C Units until
their Adjusted Capital Accounts are reduced to zero; and third, to the holders
of Class A and B Units pro rata in accordance with their percentage interests.
All amounts to be allocated to the Unitholders as a class (Class A, Class B or
Class C, as the case may be) will be allocated between the Unitholders in
accordance with their respective percentage interests in the Partnership. Gain
from a terminating capital transaction generally will be allocated first to the
holders of the Class C Units until their positive capital account balances are
equal to their unpaid preference amounts and then to the holders of the Class A,
Class B and Class C Units, pro rata in accordance with their percentage
interests. Loss from a terminating capital transaction generally will be
allocated first to the Unitholders until their positive capital account balances
are equal to their unpaid preference amount, then to the holders of Class C
Units until their positive capital account balances are equal to zero, and then
to the holders of the Class A and Class B, pro rata in accordance with their
percentage interests.
 
     The Class C Units are entitled to a preferential distribution of $1.00 per
Class C Unit per year, payable quarterly to holders of record on March 31, June
30, September 30 and December 31 in each year. The Class C preferential
distribution is cumulative, and no distributions may be paid or declared on
Class A or Class B Units unless all accrued and unpaid distributions on the
Class C Units have been paid or declared and duly provided for. Operating
distributions generally will be made first to the holders of Class C Units to
the extent of their unpaid preference amounts and then to the holders of the
Class A and Class B Units, generally in accordance with their percentage
interests. Liquidation proceeds, after all payments are made to the
 
                                       87
<PAGE>   93
 
Partnership's creditors, will be made to the Unitholders to the extent of and in
proportion to the positive balances of their respective capital accounts.
 
     (c)  Allocations Under the HEPO Partnership Agreement. In general, each
item of income, gain, loss, deduction and credit of HEPO is allocated 99% to the
Partnership (as the sole limited partner of HEPO) and 1% to HEPGP (as the
General Partner of HEPO). Operating distributions will be made 99% to the
Partnership and 1% to HEPGP. Liquidation proceeds, after all payments are made
to HEPO's creditors (including partners), will be made to HEPO's partners to the
extent of and in proportion to the positive balances of their respective capital
accounts. The HEPO Partnership Agreement provides for capital accounts to be
maintained for each partner in accordance with applicable principles set forth
in the Regulations. The HEPO Agreement does not require the Partnership, as a
limited partner, to restore any deficit balance in its capital account upon the
liquidation of HEPO.
 
     (d)  Allocations Under the EDPO Partnership Agreement. Except as otherwise
described below, each item of income, gain, loss, deduction and credit of EDPO
generally is allocated 1% to HEPGP (as the General Partner of EDPO) and 99% to
Partnership (as the sole limited partner of EDPO). With respect to productive
wells located on or production from which is attributable to (i) properties
acquired by EDPO on its inception in 1985 (the "Initial Properties") and (ii)
properties other than those acquired by EDPO on its inception in 1985 (the
"Other Properties") that were acquired on or after May 9, 1990, income and loss
generally shall be allocated 1/99ths to HEPGP as General Partner and 98/99ths to
the Partnership. With respect to productive wells located on or production from
which is attributable to Other Properties that were acquired before May 9, 1990,
income and loss generally shall be allocated 4/99ths to HEPGP as General Partner
and 95/99ths to the Partnership.
 
     With respect to each development well drilled that is located on or
production from which is attributable to the Initial Properties and each
development well that is located on or production from which is attributable to
the Other Properties and that is drilled after the date of acquisition by the
partnership of an interest in such well, income and loss shall be allocated as
follows: (i) the costs through completion attributable to such development well
generally will be allocated 100% to the Partnership and (ii) all other costs and
revenues attributable to such development wells will be allocated to 4/99ths to
HEPGP as General Partner and 95/99ths to the Partnership.
 
     With respect to each exploratory well drilled that is located on or
production from which is attributable to the Initial Properties and each
exploratory well that is located on or production from which is attributable to
the Other Properties and that is drilled after the date of acquisition by the
partnership of an interest in such well, (i) the costs through completion
attributable to such exploratory well generally will be allocated 1/11th to
HEPGP and 10/11ths to the Partnership, and (ii) all other costs and revenues
attributable to such exploratory well generally will be allocated 8/33rds to the
General Partner and 25/33rds to the Partnership.
 
     With respect to each of the Other Properties acquired by the Partnership,
(i) the Initial Acquisition Costs incurred prior to or in connection with the
acquisition of Other Properties that are classified as Undeveloped Acreage shall
be allocated 1/99th to HEPGP and 98/99ths to the Partnership and (ii) all other
Initial Acquisition Costs shall be allocated to the Partnership.
 
     Operating distributions generally will be made to the partners of EDPO in
the same percentage interests as taxable income was allocated (see discussion
above). Liquidation proceeds, after all payments are made to EDPO's creditors
(including partners), will be distributed to EDPO's partners to the extent of
and in proportion to the positive balances of their respective capital accounts.
The EDPO Partnership Agreement provides for capital accounts to be maintained
for each partner in accordance with applicable principles set forth in the
Regulations. The EDPO Partnership Agreement provides that any partner having a
negative balance in its capital account upon liquidation will be required to
restore the amount of such deficit to EDPO.
 
     (e)  Section 704(c) Allocations. Section 704(c) of the Code requires, in
general, that items of income, gain, loss and deduction attributable to property
that is contributed to a partnership must be allocated in such a way as to take
into account the variation between a partnership's adjusted tax basis in such
property and the fair market value of such property at the time of contribution.
These same concepts apply generally in the case
 
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of any revaluations of the assets of a partnership, including revaluations upon
the admission of a new partner, such as the Class C Unitholders.
 
     The Treasury Regulations under Section 704(c) of the Code (the "Section
704(c) Regulations") provide that any allocation intended to take into account
the variation between the fair market value of contributed property and its
adjusted tax basis must be made using a reasonable method that is consistent
with the purpose of Section 704(c) of the Code. The purpose of Section 704(c) of
the Code is to ensure that when a partner contributes property to a partnership,
with such property having a variation between its adjusted basis and fair market
value at the time of contribution, such partner receives the tax burdens and
benefits of any such built-in gain or loss. The Section 704(c) Regulations
describe three allocation methods that are generally reasonable: the
"traditional method," the "traditional method with curative allocations," and
the "remedial allocation method." While other methods are permissible; any
method, including one of the three specifically enunciated methods, must be a
reasonable method under the circumstances. The Section 704(c) Regulations
address certain instances (generally referred to as the "ceiling limitations")
attributable to contributed property that permit reasonable curative or remedial
allocations to eliminate disparities between book and tax items. The Section
704(c) Regulations provide in general that Section 704(c) of the Code applies on
a property-by-property basis and that aggregation of built-in gains and built-in
losses on items of contributed property is not permitted. A number of operating
rules are set forth in the Section 704(c) Regulations as prerequisites for the
use of either curative or remedial allocations. The Partnership Agreement
provides that, for federal income tax purposes, items with respect to properties
contributed to the Partnership will be allocated among the Unitholders in a
manner consistent with Section 704(c) of the Code so as to take into account the
differences between the Partnership's adjusted tax basis in each contributed
property and the fair market value of such property at the time of its
contribution.
 
     Upon a revaluation of partnership property under Treasury Regulation
Section 1.704-1(b)(2)(iv)(f), including a revaluation upon the admission of a
new partner, the Partnership may increase or decrease partners' capital accounts
by their allocable share of the difference between the book value and fair
market value ("Pre-Revaluation Appreciation or Depreciation") of the
pre-revaluation assets of the partnership on the date of the revaluation. Upon
the admission of the Class C Unitholders to the Partnership, HEPGP intends to
administer the Partnership Agreement so that Pre- Revaluation Appreciation or
Depreciation (the functional equivalent, respectively, of built-in gain or loss)
attributable to properties acquired by the Partnership prior to the consummation
of the Offering ("Pre-Offering Property") will be allocated among all
Unitholders in accordance with the principles of Section 704(c) of the Code and
the regulations thereunder.
 
     It is uncertain whether the Partnership has made and will be able to make
allocations of income, gain, loss and deduction with respect to property
contributed to the Partnership (or revalued upon the admission of partners in
prior offerings) which are consistent with the requirements of Section 704(c) of
the Code. Such uncertainty arises from the complexities associated with the
large number of partners that have contributed property to the Partnership and
the revaluation of Partnership property upon the admission of partners, the fact
that the Units are publicly traded, and the lack of authority under the
applicable Code provisions, including the Code provisions pertaining to the
allocation of depletable basis in oil and gas properties, as discussed below.
For these same reasons, it is uncertain whether the Partnership has made and
will be able to make allocations of income, gains, losses and deductions with
respect to Pre-Offering Property which are consistent with the principles of
Section 704(c) of the Code. See "Depletable Basis," below. Also, unless the
allocations are consistent with the Section 704(c) Regulations for Pre-Offering
Property, it is uncertain whether the Partnership's allocations will be
sustained under Section 704(b) of the Code.
 
     As a result of the uncertainty expressed above, Counsel is unable to
express an opinion regarding whether the allocation of income, gain, loss and
depreciation or depletion deductions among the Unitholders with respect to the
contributed property and the revalued Pre-Offering Property are consistent with
the requirements of Section 704(c) of the Code and, therefore, whether the
allocations will be sustained if challenged by the IRS. If the Partnership's
allocations under Section 704(c) of the Code were successfully challenged by the
IRS, tax items of Partnership income, gain, loss and deduction would be
reallocated among the Unitholders and the Unitholders' respective tax
liabilities would be adjusted, with the result that some Unitholders may be
required to pay additional tax.
 
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<PAGE>   95
 
     (f)  Depletable Basis. Section 613A(c)(7)(D) of the Code and the
regulations thereunder (the "Section 613A Regulations") provide that a
partnership's basis in each depletable property it acquires shall be allocated
as of the date of acquisition among its partners and that each partner shall use
their proportionate share of such basis in computing their depletion with
respect to such property and their gain or loss on the disposition of such
property by the partnership. The Section 613A Regulations provide that the basis
of oil and gas property owned by a partnership is allocated among the partners
in accordance with their proportionate interest in partnership capital unless
the partnership agreement provides for an allocation of such basis in accordance
with their proportionate interest in partnership income and, at the time of such
allocation, the share of each partner in partnership income is reasonably
expected to be substantially unchanged throughout the life of the partnership.
Generally, a partner's interest in partnership capital or income is determined
by taking into account all facts and circumstances relating to the economic
arrangement of the partners. However, an allocation of depletable basis under a
partnership agreement (where such allocation is not governed under Section
704(c) of the Code) will be recognized as being in accordance with the partners'
interests in partnership capital under Section 613A(c)(7)(D) of the Code
provided that such an allocation does not give rise to capital account
adjustments under Section 1.704-1(b)(2)(iv)(k) of the Regulations, the economic
effect of which is insubstantial and all other material allocations and capital
account adjustments under the partnership agreement are respected under Section
704(b) of the Code and the regulations thereunder. Otherwise, such depletable
basis must be allocated among the partners pursuant to Section 613A(c)(7)(D) of
the Code in accordance with the partners' actual interests in partnership
capital or income. In addition, in connection with a revaluation described in
Section 1.704-1(b)(2)(iv)(f) of the Regulations, depletable basis may be
reallocated among the partners to the extent permitted by the Section 613A
Regulations.
 
     The Section 613A Regulations provide that upon a contribution of money or
other property to the partnership in exchange for a partnership interest, the
partnership shall reallocate the depletable basis of the partnership's oil and
gas properties among the contributing partner and each existing partner. As a
result, the contributing partner is allocated a share of the depletable basis in
each of the partnership's properties, while each existing partner's share of
depletable basis in the partnership's properties is reduced by the percentage of
the basis allocated to the contributing partner. In calculating the depletable
basis of the existing partners for purposes of determining the share of basis to
be reallocated to the contributing partner, the Section 613A Regulations provide
that the depletable basis of the existing partners may be determined using
either the specific assumptions provided by the regulations or written data
provided by the existing partners. If the assumptions are used in determining
depletable basis, it is possible that the depletable basis of the partnership's
existing properties might be reallocated among the existing partners and the
contributing partner in such a way that a portion of the partners' aggregate
bases in such partnership properties is lost. A partnership generally may avoid
the loss of any portion of the aggregate bases by using written data submitted
by the partners. The Partnership Agreement requires the Partners to submit
information regarding their adjusted basis and depletion deductions with respect
to depletable properties of the Partnership.
 
     It is uncertain whether the Partnership will administer the reallocation of
depletable basis among the Class A, Class B and Class C Units in a manner
consistent with the Section 613A Regulations. However, the Partnership intends
to take the position that the provisions of the Partnership Agreement regarding
the allocation of depletable basis of the Partnership's properties among the
Unitholders are consistent with the requirements of the Section 613A
Regulations. With respect to the depletable basis of existing Partnership
property upon the issuance of additional interests in the Partnership, the
Partnership Agreement provides that the depletable basis shall be reallocated
among the existing Unitholders and the Class C Unitholders admitted pursuant to
the Offering in a manner consistent with the Section 613A Regulations and the
principles of Section 704(c) of the Code. The General Partner anticipates that
each person who acquires Class C Units pursuant to the Offering will be
allocated depletable basis in the Partnership's property in accordance with
their proportionate interest in the Partnership's capital.
 
     As a result of the uncertainty expressed above, Counsel is unable to
express an opinion regarding whether the allocation of depletable basis among
the Unitholders is consistent with the requirements of Section 613A of the Code
and, therefore, whether the allocations will be sustained if challenged by the
IRS. If the
 
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<PAGE>   96
 
Partnership's allocations of depletable basis under Section 613A of the Code
were successfully challenged by the IRS, the Unitholders' respective tax
liabilities would be adjusted, with the result that some Unitholders may be
required to pay additional tax.
 
     (g)  No Opinions Regarding Allocations. The Partnership intends to take the
position that the allocations of income, gains, losses and deductions described
above between the Unitholders and HEPGP and among the various Unitholders under
the Partnership Agreement and between the Partnership and HEPGP under the EDPO
Agreement and the HEPO Agreement, respectively, are respected under the Treasury
Regulations. However, Counsel is unable to opine whether such allocations have
substantial economic effect under Section 704(b) of the Code. Counsel's
inability to render an opinion in that regard is attributable to the fact that
Counsel is unable to opine whether the allocations of income, gain, loss and
deduction between the Unitholders and HEPGP, and among the various classes of
Unitholders, comply in all respects with the requirements of Sections 704(c) and
613A(c)(7)(D) of the Code.
 
     No assurance can be given that the IRS will not challenge the allocations
of the Partnership, EDPO or HEPO. If any allocation made in the Partnership
Agreement, the EDPO Agreement or the HEPO Agreement was not recognized for
federal income tax purposes, the item that was the subject of such allocation
would be reallocated among the partners in accordance with their respective
interests in such partnership and the partners' respective tax liabilities would
be adjusted, with the result that some Unitholders may be required to pay
additional tax. Any such reallocation would not affect current cash
distributions to the Unitholders, but could affect the amount of a Unitholder's
liquidating distribution.
 
TAX CONSEQUENCES OF THE PARTNERSHIP'S OPERATIONS
 
     Intangible Drilling and Development Costs. Intangible drilling and
development costs ("IDCs") incurred by the holder of a working interest in an
oil or gas property may be deducted as expenses for federal income tax purposes
if a proper election is made under Section 263(c) of the Code. IDCs are those
expenditures that are incurred in connection with the drilling and completion of
oil and gas wells and that do not give rise to any asset having a salvage value.
The Partnership, EDPO and HEPO have each made an election under Section 263(c)
of the Code, thereby allowing a Unitholder to deduct his distributive share of
all intangible drilling and development costs of EDPO and HEPO in the year in
which such costs are paid or incurred, subject to the basis, at-risk and passive
activity loss limitations discussed above. See "Material Federal Income Tax
Considerations -- General Features of Partnership Taxation -- Limitations on
Deduction of Losses." It is not anticipated under the allocation provisions of
the Partnership Agreement that the Class C Unitholders will be allocated
significant losses or deductions, including deductions for IDCs. See "Material
Federal Income Tax Considerations -- General Features of Partnership
Taxation -- Tax Allocations."
 
     Notwithstanding an election by a limited partnership to deduct IDCs, an
individual limited partner may elect to deduct his share of IDCs over a sixty
month period beginning with the month in which the IDCs are paid or incurred by
the limited partnership. The provision allowing the sixty month amortization has
not been the subject of administrative or judicial interpretation and various
questions exist concerning the operation of the provision and its relationship
to other Code provisions (such as the recapture rules and the rules regarding
depletion and gain or loss on disposition of the relevant property).
Accordingly, for this reason and due to the administrative burden that such an
election might impose on the Partnership, HEPGP intends to account for expenses
assuming that each Unitholder deducts currently his allocable share of IDCs.
 
     Subject to the limitations discussed above, a Unitholder who qualifies as
an "independent Producer" will be entitled to deduct his full share of domestic
IDCs for federal income tax purposes. A Unitholder who does not qualify as an
"independent Producer" (in general, an independent Producer is a person not
directly or indirectly involved in the retail sale of oil, natural gas or
derivative products or the operation of a major refinery) may currently deduct
70% of the IDCs and may amortize the remaining 30% of such costs over a period
of 60 months, except that all costs of dry holes may be deducted in the year the
drilling is completed.
 
     All or a portion of the amounts previously deducted for IDCs with respect
to a property must be recaptured upon the disposition of such property by the
partnership, or upon the disposition of Units by a
 
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<PAGE>   97
 
Unitholder, by treating the gain, if any, realized on such disposition as
ordinary income to the extent of such amounts.
 
     Depletion. The owner of an economic interest in an oil or gas property is
entitled to a deduction for depletion in connection with the income derived from
the production of oil, gas and other minerals from the property. The deduction
for depletion for any year with respect to any specific property is the greater
of "cost" depletion or "percentage" depletion (if allowable).
 
     Cost depletion for any year is determined by dividing the tax basis of a
property by the sum of the estimated total units (e.g., Bbls of oil or Mcf of
gas) recoverable from the property as of the end of the year plus the units sold
during the year to determine the per-unit allowance and then multiplying the
per-unit allowance by the number of units sold during the year. Deductions for
cost depletion, in the aggregate, cannot exceed the tax basis of the property to
which they relate.
 
     Percentage depletion is equal to 15% (and, in the case of marginal
production, an additional 1%, subject to a maximum increase of 10%, for each
whole dollar by which $20 exceeds the average domestic wellhead price for crude
oil for the immediately preceding fiscal year) of the gross income attributable
to production from a property, subject to the following limitations: (a) the
amount of percentage depletion with respect to any property may not exceed 100%
of the taxable income from such property (computed without regard to the
allowance for depletion) and (b) the total amount of percentage depletion for a
taxable year may not exceed 65% of the taxpayer's taxable income for such year
(computed without regard to percentage depletion deductions and certain loss
carrybacks). In addition, percentage depletion generally is only available with
respect to domestic oil and gas production of certain "independent producers"
(in general, an independent Producer is a person not directly or indirectly
involved in the retail sale of oil, natural gas or derivative products or the
operation of a major refinery). An independent Producer may deduct percentage
depletion only to the extent his average daily production (including his share
of production from any partnership of which he is a partner) does not exceed
1,000 equivalent Bbls (with 6,000 cubic feet of gas being equal to one Bbl of
oil).
 
     Unlike cost depletion, percentage depletion is not limited to the tax basis
of the property, but continues to be allowable as a deduction each year even
after the tax basis has been fully recovered. See "Federal Income Tax
Considerations -- Other Tax Consequences -- Minimum Tax" below.
 
     Upon the disposition of a property, all amounts previously deducted for
depletion (whether cost depletion or percentage depletion, except for percentage
depletion deductions in excess of the basis of the property), to the extent that
such amounts reduced the basis in the property, generally must be recaptured by
treating the gain, if any, recognized on such disposition as ordinary income to
the extent of such amounts.
 
     A Unitholder's depletion deduction attributable to the Partnership's
properties will be based on his share of the tax basis in such properties. A
Unitholder who acquires Units pursuant to the Offering will be entitled to
compute cost depletion with respect to that portion of the tax basis of the
Partnership's depletable properties that is allocated to him pursuant to the
Partnership Agreement.
 
     Because depletion deductions are considered to be individual deductions
rather than partnership deductions, each Unitholder generally is responsible for
computing his own depletion allowance and maintaining records with respect to
his share of the basis in the Partnership's depletable properties. However, the
Partnership will calculate the depletion deduction allowable to a Unitholder
based upon the Partnership's information gathering systems.
 
     Depreciation. The allowance for depreciation permits the Partnership to
deduct the cost of tangible personal property (such as pipe, casing, tubing,
storage tanks and pumps) over certain periods. Under the Accelerated Cost
Recovery System, property is divided into several classes. It is anticipated
that most of the new tangible personal property acquired by the Partnership in
the future will be either (i) classified as "seven-year property" which is
depreciable using either the 200% declining balance method with a switch to the
straight-line method at such time as to maximize depreciation deductions or the
straight-line method over a seven-year period; or (ii) depreciated using the
units of production method. Any depreciation deductions claimed with respect to
an asset will reduce the tax basis in that asset.
 
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<PAGE>   98
 
     Upon the disposition of an asset, all amounts previously claimed as
depreciation deductions must be recaptured by treating the gain, if any,
recognized on such disposition as ordinary income to the extent of such amounts.
 
     Capital Costs. For federal income tax purposes, costs incurred in the
acquisition and geological evaluation of an oil or gas property must be
capitalized. Such costs are recoverable through depletion deductions if the
property is productive or through loss deductions at such time as the property
is abandoned or determined to be worthless if the property is not productive.
Any other capital costs associated with nonproductive wells may be deducted at
such time as the leases upon which such wells are located or the items
themselves are abandoned or determined to be worthless.
 
     Farm-out and Farm-in Transactions. It is possible that the Partnership may
acquire an interest in an oil or gas property in partial or full consideration
for its agreement to drill one or more wells thereon (a "farm-in" transaction)
or that it may transfer an interest in an oil or gas property in partial or full
consideration for an agreement of the transferee to drill one or more wells
thereon (a "farm-out" transaction). The IRS has ruled that a farm-out or farm-in
transaction involving more than one property could result in taxable income to
both parties, even though no cash consideration is given or received.
 
     The Partnership, in negotiating farm-out or farm-in transactions, will
endeavor to take such steps as may be practicable to minimize the exposure under
such ruling. The application of the ruling in certain fact situations, however,
is unclear. Therefore, the IRS may claim that normal farm-out and farm-in
transactions entered into by the Partnership result in taxable gain to the
Partnership in excess of amounts reported, if any, on the Partnership's income
tax returns. If such position of the IRS is ultimately sustained, the
Unitholders would be required to take into account their shares of such taxable
income, although no cash would be distributed the Unitholders with respect to
such income.
 
     Organization and Syndication Costs. Costs paid in connection with the
organization and syndication of the Partnership must be capitalized.
Organization costs (i.e., costs that are incident to the creation of the
Partnership) may be amortized over a period of not less than 60 months.
Syndication costs (i.e., costs incurred to promote the sale of, or to sell,
interests in the Partnership, including the Offering) cannot be amortized or
otherwise deducted. Substantially all the costs incurred in connection with the
Offering will be classified as syndication costs.
 
     Transfer of Cash, Units and Property Interests to HEPGP as Compensation.
HEPGP generally will receive cash or Units equal to 2% of the acquisition cost
of any oil and gas properties, Oil and Gas Interests (as defined in the
Partnership Agreement) and any other Oil and Gas Related Assets (as defined in
the Partnership Agreement) acquired by the Partnership (or any Operating
Partnership or the Joint Venture, as such term is defined in the Partnership
Agreement) as a fee in connection with the acquisition of such properties
interests and related assets. HEPGP will be required to recognize in the tax
years in which the cash or Units are receivable taxable income equal to the
amount of cash received or the fair market value of Units received.
 
     To the extent HEPGP receives Units as an acquisition fee, the Unitholders
may also recognize taxable gain. Specifically, the Partnership will be deemed to
have transferred to HEPGP as compensation for services an undivided interest in
the assets of the Partnership followed immediately thereafter by a
recontribution of such assets by HEPGP to the Partnership for the Units. This
deemed transfer to HEPGP will result in taxable gain to the Partnership equal to
the excess of the fair market value of the undivided interest in the Partnership
assets transferred to HEPGP over the adjusted tax basis of the Partnership in
such assets. Any such gain will be allocated among the Unitholders in accordance
with the provisions of the Partnership Agreement and taxed as capital gain if
the transferred assets were either capital assets or "Section 1231 assets,"
except that such gain will be taxed as ordinary income to the extent it is
attributable to the recapture of deductions for intangible drilling and
development costs, depreciation deductions and depletion deductions. This
taxable gain will be allocated among the Unitholders in accordance with the
provisions of the Partnership Agreement.
 
     The Partnership's adjusted tax basis in the Partnership assets that are
treated as conveyed by HEPGP to the Partnership in this deemed transfer should
be equal to the taxable income recognized by HEPGP. Such
 
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<PAGE>   99
 
increase in the adjusted tax basis of the Partnership's assets should increase
HEPGP's depletion and depreciation deductions as well as decrease HEPGP's gain
on disposition of the assets.
 
     HEPGP also will receive 4% of any oil and gas properties, Oil and Gas
Interests or any other Oil and Gas Related Assets other than Undeveloped Acreage
and Proved Undeveloped Acreage (as such terms are defined in the Partnership
Agreement) acquired by the Partnership (or any Operating Partnership or the
Joint Venture) as a fee in connection with the acquisition of such properties,
interests and related assets. The Partnership will recognize gain or loss upon
the transfer of such 4% interest in an amount equal to the difference between
the fair market value of the interest transferred and its adjusted tax basis.
Any gain recognized by the Partnership will be allocated among the Unitholders
in accordance with the provisions of the Partnership Agreement. HEPGP will be
required to recognize in the tax years in which the property is received taxable
income equal to the fair market value of the property interests. HEPGP's 4%
interests will be held by HEPGP outside of the Partnership and should not,
therefore, have any additional tax effect on the Unitholders.
 
     The Partnership intends to capitalize the fees paid to HEPGP as part of the
Partnership's adjusted tax basis in the acquired property in an amount equal to
the fair market value of the cash, Units or property interests received by HEPGP
as an acquisition fee. See "Federal Income Tax Considerations -- Tax
Consequences of the Partnership's Operations -- Capital Costs."
 
     Acquired Intangible Assets. Subject to the application of certain
anti-churning rules, the Partnership (as well as any Operating Partnership)
should be allowed to amortize its tax basis in purchased intangibles (assuming
that such intangibles are "amortizable Section 197 intangibles" within the
meaning of Section 197 of the Code) over 15 years on a straight-line basis under
Section 197 of the Code. Each Unitholder will be allocated a share of such
amortization deductions which will reduce the Unitholder's share of the taxable
income of the Partnership.
 
     Section 754 Election. The Partnership and the Operating Partnerships have
made the election permitted by Section 754 of the Code. This election generally
permits a subsequent purchaser of Class C Units to adjust his share of the basis
in the Partnership's properties ("inside basis") pursuant to Section 743(b) of
the Code to fair market value (as reflected by his Class C Unit purchase price).
The Section 743(b) adjustment is attributed solely to such a purchaser of Class
C Units and is not added to the bases of the Partnership's assets associated
with all other Unitholders (for purposes of this discussion, a Unitholder's
inside basis in the Partnership's assets will be considered to have two
components: (1) his share of the Partnership's actual basis in such assets
("Common Basis"); and (2) his Section 743(b) adjustment allocated to each such
asset). This adjustment will result in the purchaser claiming depletion and
other deductions and reporting his share of the Operating Partnerships' gain or
loss on the sale of its assets, based on his purchase price for the Class C
Units, rather than on the Operating Partnerships' adjusted tax basis in its
assets. This adjustment may favorably influence the sales price and
marketability of the Class C Units if the purchaser's basis in his Class C Units
is greater than such Units' share of the Operating Partnerships' adjusted tax
bases in their assets. However, this adjustment may negatively influence the
sales price and marketability of the Class C Units if the purchaser's basis in
his Class C Units is less than such Units' share of the Operating Partnerships'
adjusted tax bases in their assets.
 
     Proposed Treasury Regulation Section 1.168-2(n) generally requires the
Section 743(b) adjustment attributable to recovery property to be depreciated as
if the total amount of such adjustment were attributable to newly-acquired
recovery property placed in service when the purchaser acquires the Unit.
Similarly, Proposed Treasury Regulation Section 1.197-2(g)(3) generally requires
that the Section 743(b) adjustment attributable to an amortizable Section 197
intangible must be treated as a newly acquired asset placed in service when the
purchaser acquires the Unit. Under Treasury Regulation Section 1.167(c)-1(a)(6),
a Section 743(b) adjustment attributable to property subject to depreciation
under Section 167 of the Code (rather than cost recovery deductions under
Section 168) is generally required to be depreciated using either the
straight-line method or the 150% declining balance method. The depreciation and
amortization methods and useful lives associated with the Section 743(b)
adjustment, therefore, may differ from the methods and
 
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useful lives generally used to depreciate the Partnership's (or Operating
Partnership's) Common Basis in such properties. See "Material Federal Income Tax
Considerations -- Uniformity of Units."
 
     Pursuant to the Partnership Agreement, HEPGP generally is authorized to
make allocations to achieve and maintain the uniformity of Units, even if such
allocations are not consistent with Treasury Regulation Section
1.167(c)-1(a)(6), Proposed Treasury Regulation Section 1.168-2(n) or Proposed
Treasury Regulation Section 1.197-2(g)(3). In implementing the Section 754
election, HEPGP will be required to periodically make a number of complex and
detailed allocations, valuations and calculations. In order to avoid undue
administrative expense in effecting the Section 754 election, HEPGP intends to
employ various procedures that will not conform with existing Regulations in a
number of respects and, specifically, will not be consistent with Treasury
Regulation Section 1.167(c)-1(a)(6), Proposed Treasury Regulation Section 1.168-
2(n) or Proposed Treasury Regulation Section 1.197-2(g)(3). For the reasons
discussed in the preceding sentence and below, Counsel is unable to opine
whether the Partnership's method of computing and effecting the depreciation,
depletion and amortization adjustments under Section 743 of the Code, utilized
to maintain the uniformity of the economic and tax characteristics of the Units,
will be sustained if challenged by the IRS.
 
     Although Counsel is unable to opine as to the validity of such an approach,
the Partnership (and the Operating Partnerships) intends to depreciate the
portion of the Section 743(b) adjustment attributable to unrealized appreciation
in the value of any contributed property (to the extent of any unamortized
book-tax disparity) using a rate of depreciation or amortization derived from
the depreciation or amortization method and useful life applied to the
Partnership's (or Operating Partnership's) basis of such property, despite its
inconsistency with Treasury Regulation Section 1.167(c)-1(a)(6), Proposed
Treasury Regulation Section 1.168-2(n) or Proposed Treasury Regulation Section
1.197-2(g)(3). If the Partnership determines that such position cannot
reasonably be taken, the Partnership may adopt a depreciation or amortization
convention under which all purchasers acquiring Units in the same month would
receive depreciation or amortization, whether attributable to the Partnership's
(or Operating Partnership's) Common Basis or Section 743(b) adjustment, based
upon the same applicable rate as if they had purchased a direct interest in the
Partnership's assets. Such an aggregate approach may result in lower annual
depreciation or amortization deductions than would otherwise be allowable to
certain Unitholders.
 
     The adjustments to be made to the basis of the Operating Partnerships'
assets as a result of the Section 754 elections are complex. The Code, the
Regulations and other authorities contain no guidance as to how the basis
adjustment is to be made in situations similar to the Partnership's and,
consequently, there is no assurance that the procedures used by the Partnership
(and the Operating Partnerships) will not be successfully challenged by the IRS
and that the deductions attributable to them will not be disallowed or reduced.
HEPGP intends to use the foregoing procedures because it thinks they are
reasonable, because they are used by other publicly traded partnerships and
because it would be too expensive and complex to attempt strict compliance with
all of the technical requirements of the Regulations. Counsel expresses no
opinion with regard to the validity of the foregoing procedures. The use of such
procedures may require Unitholders to make subsequent adjustments to
computations of gain or loss on the sale of a Unit and/or to their share of
items of income, gain, deduction and loss from operations of the Partnership
(which may result in adjustments to the Unitholders' respective tax liabilities,
with the result that some Unitholders may be required to pay additional tax) and
could subject the Partnership and Unitholders to penalties.
 
     Certain operating agreements entered into by the Operating Partnerships
with third parties may be treated as partnerships for federal income tax
purposes. It is anticipated that such tax partnerships will not make Section 754
elections. As a result, subsequent purchasers of Units may not obtain the full
benefit of the Section 754 elections made by the Operating Partnerships.
 
     HEPGP will use its best efforts to comply with the requirements of the Code
and the Regulations relating to making the basis adjustment and furnishing
information with regard to the basis adjustment. Should the expense of
compliance prove, in the judgment of HEPGP, to exceed the benefit of the
election, however, HEPGP will, as authorized by the Partnership Agreement, seek
the permission of the IRS to revoke the Section 754 elections for the
Partnership and the Operating Partnerships.
 
                                       95
<PAGE>   101
 
     Sale of Partnership Property. If the Partnership sells any of its property
(other than production from its properties), gain will be recognized to the
extent that the amount realized on such sale exceeds the tax basis of such
property or loss will be recognized to the extent that the tax basis exceeds the
amount realized. The amount realized will include any money plus the fair market
value of any other property received. If the purchaser assumes a liability in
connection with such purchase or takes the property subject to a liability, the
amount realized also will include the amount of such liability.
 
     If gain is recognized on such sale, the portion of the gain that is treated
as recapture of IDCs, depletion, or depreciation deductions will be treated as
ordinary income. See "Material Federal Income Tax Considerations -- Tax
Consequences of the Partnership's Operations -- Intangible Drilling and
Development Costs," "Material Federal Income Tax Considerations -- Tax
Consequences of the Partnership's Operations -- Depletion," and "Material
Federal Income Tax Considerations -- Tax Consequences of the Partnership's
Operations -- Depreciation" above. The remainder of such gain generally will
constitute "Section 1231 gain." If loss is recognized on such sale, such loss
generally will constitute "Section 1231 loss."
 
     Each Unitholder must take into account his share of the portion of the gain
that constitutes recapture income as ordinary income and must also take into
account his share of the Section 1231 gains and losses along with his Section
1231 gains and losses from other sources, subject to the loss limitations. See
"Material Federal Income Tax Considerations -- General Features of Partnership
Taxation -- Limitations on Deduction of Losses." The characterization of the
Unitholder's share of the Section 1231 gains and Section 1231 losses
attributable to the Partnership's properties as either ordinary or capital will
depend upon the total amount of the Unitholder's Section 1231 gains and Section
1231 losses from all sources for the taxable year. Generally, if the total
amount of the gains exceeds the total amount of the losses, all such gains and
losses will be treated as capital gains and losses and if the total amount of
the losses exceeds the total amount of the gains, all such gains and losses will
be treated as ordinary income and losses. Notwithstanding the above, however, a
Unitholder's net Section 1231 gains will be treated as ordinary income to the
extent of such Unitholder's net Section 1231 losses during the immediately
preceding five years reduced by any amount of net Section 1231 losses that have
previously been "recaptured" pursuant to this rule.
 
     If a Unitholder is entitled to basis adjustment by reason of the Section
754 election and a portion of such adjustment is allocated to the property that
is sold, the amount of the gain or loss that such Unitholder will be required to
report by reason of such sale will be affected by such basis adjustment. See
"Material Federal Income Tax Considerations -- Tax Consequences of the
Partnership's Operations -- Section 754 Election" above.
 
     Termination of the Partnership. If Units representing at least a 50%
interest in the capital and profits of the Partnership are sold or exchanged
within any consecutive 12-month period (disregarding successive transfers of the
same Units during such period), the Partnership will terminate for federal
income tax purposes. Such a termination is referred to as a "constructive
termination." When a constructive termination occurs, the Partnership will be
treated as transferring all of its assets and liabilities to a new partnership
in exchange for an interest in the new partnership and, immediately thereafter,
the Partnership will be treated distributing its interest in the new partnership
to its partners in liquidation of the Partnership. A termination of the
Partnership will also cause a termination of EDPO and HEPO.
 
     The Partnership's taxable year will end on the date of the constructive
termination and a new taxable year will begin immediately thereafter. As a
result of the closing of the Partnership's taxable year, a Unitholder who has a
taxable year other than a calendar year may be required to report more than 12
months of the Partnership's income or loss in his taxable year in which the
constructive termination occurs. In addition, as a result of the constructive
termination, (a) there will be a closing of the Partnership's taxable year for
all partners, (b) the new partnership will be treated as newly acquiring the
depreciable assets of the Partnership and will be required to restart the
depreciable lives of such assets (c) the new partnership will be required to
make new elections for federal income tax purposes (including the Section 754
election and the election to deduct IDCs) in order to enjoy the benefit of such
elections. Finally, a termination might either accelerate the application to the
Partnership of, or subject the Partnership to, any tax legislation enacted prior
to the termination.
 
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<PAGE>   102
 
     Because the Units will be freely transferable without notice to the
Partnership, the Partnership may not have the ability to determine when a
constructive termination occurs. In any such case, the Partnership may be
subject to penalties for failure to file timely tax returns and may fail to have
in effect certain elections, including the election to deduct IDCs and the
section 754 election.
 
     When the Partnership is actually terminated, each Unitholder will be
required to recognize, in addition to his share of the Partnership's income,
gains, losses and deductions for the period prior to the date of termination,
his share of any gains or losses resulting from the sale or other disposition of
property in liquidation of the Partnership.
 
     Upon the termination of the Partnership, each Unitholder will be required
to recognize gain to the extent that the amount of money distributed (or deemed
to be distributed) to him (including any reduction in his share of nonrecourse
liabilities) exceeds the tax basis of his Units or his at-risk amount. The
Unitholder will not recognize loss unless only money, unrealized receivables and
inventory are distributed and then only to the extent that the tax basis of his
Units exceeds the amount of money plus the tax basis (in the Partnership's
hands) of the property distributed to him. Generally, any gain or loss will be
capital gain or loss; however, if the Unitholder receives or is deemed to
receive more or less than his pro rata share of ordinary income items (including
potential recapture of IDCs), he may be required to recognize ordinary income or
loss.
 
     The tax basis of any property distributed to a Unitholder generally will be
equal to the tax basis of his Units reduced by any money distributed to him.
Such basis generally will be allocated first to ordinary income items in an
amount equal to the Partnership's tax basis in such property, with any remainder
being allocated among the other distributed property as follows: (i) among such
other property in an amount equal to the respective tax bases in the
Partnership's hands, (ii) among such other property with unrealized appreciation
in proportion to such unrealized appreciation; and (iii) among such other
property in proportion to their respective fair market values. Any Unitholder
who has a basis adjustment as a result of the Section 754 election with respect
to any of the Partnership's property will be entitled to include his basis
adjustment in the basis of the property distributed to him. The holding period
of any property distributed will include the period during which the Partnership
held such property if such property was either a capital asset or a Section 1231
asset in the Partnership's hands; if such property was neither a capital asset
nor a Section 1231 asset in the hands of the Partnership, the holding period of
such property in the hands of the Unitholder upon such distribution will
commence on the day following such distribution.
 
SALE OF UNITS
 
     The Units are listed on the American Stock Exchange and sales of Units may
be effected through such exchange. The general tax consequences of such sales
are summarized below.
 
     Allocations Between Transferor and Transferee.
 
     The method currently used by HEP for allocating income, gains, losses and
deductions between transferors and transferees of their Units employs a monthly
convention and a proration method. If a Unit is transferred, the portion of
HEP's income, gains, losses and deductions attributable to such Unit for the
taxable year in which the transfer occurs will be allocated to the persons who
owned such Unit during such year pro rata in accordance with the number of
months during such year that each owned the Unit. For purposes of this
allocation, the person who owned the Unit on the first day of any month is
considered to be the owner of such Unit for that entire month. For example, a
person who purchases one Unit on March 15 and sells such Unit on April 10 of the
same year will be allocated one-twelfth of the portion of HEP's income, gains,
losses and deductions attributable to that Unit for such year. As a result of
this allocation method, the share of the partnership's income, gains, losses and
deductions allocated to and reportable by a Unitholder may not correspond to the
items of income, gain, loss and deduction that actually arose during the portion
of the year that he held his Unit.
 
     The IRS has announced that it intends to issue Regulations under Section
706(d) of the Code, which governs allocations between transferors and
transferees. Pending the issuance of such Regulations, the IRS appears to
require the use of a daily convention if a proration method is used (pursuant to
which income,
 
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<PAGE>   103
 
gains, losses and deductions attributable to a partnership interest for a
taxable year are allocated to the owners of such interest pro rata in accordance
with the number of days during such year that each owned the interest) and to
permit the use of a semi-monthly convention if an interim closing method is used
(pursuant to which the items of income, gain, loss and deduction actually
arising during a particular month are allocated to the owner of the interest
during the month). In addition, certain Congressional committee reports appear
to restrict the use of a monthly convention to dispositions of less than all of
a partner's interest. Thus, there can be no assurance that the IRS will not
require the Partnership to use a different allocation method than the one it
currently uses. For the reasons stated above, Counsel is unable to opine whether
the Partnership's conventions for allocating taxable income and losses between
the transferor and the transferee of Units sold within a month is permitted by
existing Regulations. If the IRS were successful in challenging the
Partnership's allocation method, the Unitholders' respective tax liabilities
would be adjusted, with the result that some Unitholders may be required to pay
additional tax and it might be impossible or administratively impractical for
the Partnership to use the allocation method required by the IRS. The
Partnership Agreement gives the General Partner the power to change the
Partnership's transferor-transferee allocation method in order to comply with
future Regulations or other interpretations of Section 706(d) of the Code.
 
     Where a "parent" partnership (such as the Partnership) holds an interest in
a "subsidiary" partnership (such as EDPO or HEPO) and a partner's interest in
the "parent" partnership changes, the items of the "subsidiary" partnership are
to be allocated among the partners of the "parent" partnership by (its)
assigning the appropriate portion of each such item to the appropriate day in
the "parent" partnership's taxable year (based on the attribution of such items
to the days of the "subsidiary" partnership's taxable year) and (ii) allocating
the items assigned to each such day among the partners of the "parent"
partnership based on their interest in such partnership as of the close of such
day. Because of complexities in applying a daily convention for such
allocations, the Partnership's share of items of taxable income and loss of EDPO
and HEPO generally will be determined and allocated among the Unitholders of
record on a monthly basis employing the same monthly convention to be used for
allocating the Partnership's taxable income and loss among transferors and
transferees of Units. There can be no assurance that the IRS will not require
the Partnership to use a different allocation method than the one it currently
uses. If the IRS were successful in challenging the Partnership's allocation
method, the Unitholders' respective tax liabilities would be adjusted, with the
result that some Unitholders may be required to pay additional tax, and it might
be impossible or administratively impractical for the Partnership to use the
allocation method required by the IRS. The General Partner is authorized to
revise the method of allocation, if necessary, in order to comply with any
Regulations or rulings ultimately published.
 
     Recognition of Gain or Loss. When a Unitholder sells a Class C Unit, he
will recognize gain or loss measured by the difference between the amount
realized on the sale and his tax basis in such Unit. The Unitholder's amount
realized will be equal to the price at which he sells the Unit plus his share of
any nonrecourse liabilities that the Partnership has outstanding at the time of
the sale. For a discussion of the computation of the tax basis in Units, see
"Material Federal Income Tax Considerations -- General Features of Partnership
Taxation -- Computation of Basis" above and for a discussion of the allocation
of basis to a particular Unit, see "Material Federal Income Tax
Considerations -- Sale of Units -- Allocation of Basis in Units" below.
 
     To the extent that the portion of the amount realized that is attributable
to the Partnership's ordinary income items (including potential recapture of
IDCs depletion and depreciation) exceeds the portion of the tax basis allocable
to such items (which will generally be zero), the gain will be treated as
ordinary income. So long as the Unitholder holds the Class C Unit as a capital
asset (generally, an asset held as an investment), the remainder of the gain
will be treated as capital gain and any loss recognized on the sale will be
treated as capital loss. The Unitholder will be required to recognize the full
amount of the ordinary income portion even if the amount of the ordinary income
exceeds the overall gain on the sale (in which event, the Unitholder will also
recognize capital loss to the extent the ordinary income exceeds the overall
gain) and even if there is an overall loss on the sale (in which event, the
Unitholder will recognize an offsetting capital loss equal to the amount of the
ordinary income portion and an additional capital loss equal to the overall loss
on the sale).
 
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<PAGE>   104
 
     Net capital gains of individual taxpayers currently are taxed at a maximum
statutory rate (20% for capital assets held for more than 18 months) which is
less than the maximum statutory rate applicable to other income (39.6%). Net
capital gain means the excess of net long-term capital gain over net short-term
capital loss.
 
     It should be noted that certain limitations are applicable to the
deductibility of capital losses. Therefore, capital gains that result from the
sale of Units can be offset by capital losses from other sources, but capital
losses that result from the sale of Units can be deducted only to the extent of
the Unitholder's capital gains from other sources plus, in the case of an
individual, up to $3,000 of taxable income. Any capital losses that cannot be
deducted in a particular year because of the $3,000 limitation can be carried
forward and deducted as capital losses in subsequent years (subject to the same
limitations and any other limitations on the deductibility of losses). See
"Federal Income Tax Considerations -- General Features of Partnership
Taxation -- Limitation on Deduction of Losses").
 
     Allocation of Basis in Units. The IRS has ruled that a partner acquiring
interests in a partnership in separate transactions at different prices must
maintain an aggregate adjusted tax basis in a single partnership interest and
that, upon sale or other disposition of some of the interests, a portion of such
aggregate adjusted tax basis must be allocated to the interests sold on the
basis of some equitable apportionment method. The ruling is unclear as to how
the holding period is affected by this aggregation concept. If this ruling is
applicable to the holders of Class C Units, the aggregation of tax bases of a
holder of Class C Units effectively prohibits him from choosing among the Class
C Units with varying amounts of unrealized gain or loss as would be possible in
a stock transaction. Thus, the ruling may result in an acceleration of gain or
deferral of loss on a sale of a portion of a Unitholder's Class C Units. It is
not clear whether the ruling applies to publicly traded partnerships, such as
the Partnership, the interests in which are evidenced by separate interests and,
accordingly, Counsel does not opine as to the effect such ruling will have on
the Unitholders. A Unitholder considering the purchase of additional Units or a
sale of Units purchased at differing prices should consult his tax advisor as to
the possible consequences of the ruling.
 
     Information Filing Requirements. Any Unitholder who sells a Unit (other
than through a broker, as described below) will be required to notify the
Partnership of such transaction in accordance with Regulations under Section
6050K of the Code and must attach a statement to his federal income tax return
reflecting certain facts regarding the sale. Such notice must be given in
writing within 30 days of the sale (or, if earlier, by January 15 of the
calendar year following the calendar year in which the sale occurred) and must
include the names and addresses of the buyer and the seller, the taxpayer
identification numbers of the buyer and the seller (if known) and the date of
the sale. Unitholders who fail to furnish the information to the Partnership
concerning the sale required by Section 6050K of the Code may be penalized $50
for each such failure. Furthermore, the Partnership is required to notify the
IRS of any sale of a Unit of which it has notice (other than a sale through a
broker, as described below) and to report the names, addresses and taxpayer
identification numbers of the buyer and the seller who were parties to such
transaction, along with all other required information. If the Partnership fails
to furnish this information to the IRS, it may be subject to a penalty of $50
per failure with an annual maximum penalty of $250,000 (with a penalty of $100
per failure and no annual limitation in the case of intentional disregard of
this requirement). The Partnership also is required to provide copies of the
information it provides to the IRS to the buyer and the seller. If the
Partnership fails to furnish this information to the buyer and the seller, it
may be subject to a penalty of $50 per failure with an annual maximum penalty of
$100,000.
 
     These reporting requirements do not apply to a sale of Units by a U.S.
citizen through a broker. Units that are sold through a broker will be subject
to the information return filing requirements of Section 6045 of the Code.
Section 6045 of the Code and the Regulations thereunder provide that a broker
that makes a sale of a partnership interest on behalf of a customer must notify
the IRS of such sale and report to the IRS the name, address and taxpayer
identification number of the customer as well as additional required information
concerning the transaction. The broker must also provide to the customer a copy
of the information provided to the IRS.
 
                                       99
<PAGE>   105
 
UNIFORMITY OF UNITS
 
     Because the Partnership cannot match transferors and transferees of Class C
Units, uniformity of the economic and tax characteristics of the Class C Units
to a purchaser of such Units must be maintained. In the absence of uniformity,
compliance with a number of federal income tax requirements, both statutory and
regulatory, could be substantially diminished. A lack of uniformity can result
from a literal application of Treasury Regulation Section 1.167(c)-1(a)(6),
Proposed Treasury Regulation Section 1.168-2(n) or Proposed Treasury Regulation
Section 1.197-2(g)(3) and from the application of the "ceiling limitation" on
the Partnership's ability to make allocations to eliminate book-tax disparities
attributable to contributed properties and Partnership property that has been
revalued and reflected in the partners' capital accounts ("Adjusted
Properties"). Any non-uniformity could have a negative impact on the value of
the Class C Units. See "Material Federal Income Tax Considerations -- Tax
Consequences of the Partnership's Operations -- Section 754 Election."
 
     The Partnership intends to depreciate the portion of a Section 743(b)
adjustment attributable to unrealized appreciation in the value of contributed
property or Adjusted Property (to the extent of any unamortized book-tax
disparity) using a rate of depreciation or amortization derived from the
depreciation or amortization method and useful life applied to the Partnership's
(or Operating Partnership's) basis of such property, despite its inconsistency
with Treasury Regulation Section 1.167(c)-1(a)(6), Proposed Treasury Regulation
Section 1.168-2(n) and Proposed Treasury Regulation Section 1.197-2(g)(3). See
"Material Federal Income Tax Considerations -- Tax Consequences of the
Partnership's Operations -- Section 754 Election." If the Partnership determines
that such a position cannot reasonably be taken, the Partnership may adopt a
depreciation and amortization convention under which all purchasers acquiring
Units in the same month would receive depreciation and amortization deductions,
whether attributable to the Partnership's (or Operating Partnership's) Common
Basis or Section 743(b) basis, based upon the same applicable rate as if they
had purchased a direct interest in the Partnership's property. If such an
aggregate approach is adopted, it may result in lower annual depreciation and
amortization deductions than would otherwise be allowable to certain Unitholders
and risk the loss of depreciation and amortization deductions not taken in the
year that such deductions are otherwise allowable. This convention will not be
adopted if the Partnership determines that the loss of depreciation and
amortization deductions will have a material adverse effect on the Unitholders.
If the Partnership chooses not to utilize this aggregate method, the Partnership
may use any other reasonable depreciation and amortization convention to
preserve the uniformity of the intrinsic tax characteristics of any Units that
would not have a material adverse effect on the Unitholders. In any event, the
Partnership intends to make adjustments as necessary to maintain uniformity
among all Class C Unitholders. The IRS may challenge any method of depreciating
the Section 743(b) adjustment described in this paragraph or the adjustments to
existing Class C Units. If such a challenge were sustained, in either respect,
the uniformity of Units might be affected.
 
OTHER TAX CONSEQUENCES
 
     Minimum Tax. Individuals are subject to an "alternative minimum tax" in
addition to their regular income tax. The alternative minimum tax is the excess
of (a) 26% of up to $175,000 ($87,500 for a married taxpayer filing a separate
return) of the taxpayer's alternative minimum taxable income in excess of the
taxpayer's exemption amount plus 28% of the taxpayer's remaining alternative
minimum taxable income over (b) the taxpayer's regular tax liability for the
taxable year. The taxpayer's exemption amount is $45,000 in the case of married
taxpayers filing a joint return or a surviving spouse, $33,750 in the case of a
single taxpayer who is not a surviving spouse and $22,500 in the case of a
married taxpayer filing a separate return. The exemption amount is reduced (but
not below zero) by $.25 for each dollar of alternative minimum taxable income in
excess of $150,000 for married taxpayers filing a joint return or a surviving
spouse, $112,500 for a single taxpayer who is not a surviving spouse and $75,000
for a married taxpayer filing a separate return. An individual's alternative
minimum taxable income generally is equal to his taxable income (recomputed by
making certain adjustments) plus the individual's tax preference items.
 
     Corporations are also subject to an alternative minimum tax. The corporate
minimum tax is the excess of (a) 20% of the amount by which the corporation's
alternative minimum taxable income exceeds $40,000 over
 
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<PAGE>   106
 
(b) the corporation's regular income tax liability. The $40,000 exemption amount
is reduced by $.25 for each dollar of alternative minimum taxable income in
excess of $150,000. A corporation's alternative minimum taxable income generally
is equal to taxable income (recomputed by making certain adjustments) plus the
corporation's tax preference items.
 
     Because a Unitholder's liability for the alternative minimum tax is
computed by taking into account his regular income tax liability, the extent to
which any tax preference items directly or indirectly resulting from his
investment in Units would be subject to the alternative minimum tax will depend
on the facts of his particular situation. For a taxpayer with substantial tax
preference items, the alternative minimum tax could reduce the after-tax
economic benefit of his investment in Units. Each person considering an
acquisition of Units should consult his tax advisor concerning the impact of the
alternative minimum tax on his investment in Units.
 
     State and Local Taxes.
 
     In addition to federal income taxes, Unitholders may be subject to state
and/or local income taxes, as well as other taxes, that may be imposed by the
various jurisdictions in which the Partnership, EDPO or HEPO own property or
conduct business, as well as being subjected to tax by the Unitholder's state of
domicile. The Partnership, EDPO or HEPO own or may acquire properties in states
that have state income taxes applicable to individuals. As a result, Unitholders
may be required to file state income tax returns and to pay state income taxes
in some or all of these states and may be subject to penalties for failure to
comply such requirements. Some of the states may require the Partnership, or the
Partnership may elect, to withhold a percentage of income from amounts to be
distributed to a Unitholder who is not a resident of the state. Withholding, the
amount of which may be greater or less than a particular Unitholder's state
income tax liability, generally does not relieve the non-resident Unitholder
from the obligation to file a state income tax return. Amounts withheld may be
treated as if distributed to Unitholders for purposes of determining the amounts
distributed by the Partnership to the Unitholders. In addition, the assets of
the Partnership, EDPO and HEPO will likely be subject to ad valorem tax assessed
by the county and other local political jurisdictions within which such assets
are situated. Production from the wells of the Partnership, EDPO and HEPO may be
subject to state taxes on gross production in certain jurisdictions and a
Unitholder might be subjected to estate or inheritance taxes in such states.
 
     Certain tax benefits that are available to the Unitholder for federal
income tax purposes may not be available to the Unitholder for state or local
income tax purposes and vice-versa. The Partnership intends to supply
Unitholders with information that allows the Unitholders to comply with income
tax obligations, if any, attributable to the various jurisdictions in which the
operating partnerships operate. This information should be used by each
Unitholder and his tax advisor to prepare and file any necessary state and local
tax returns. All state and local tax reporting pertaining to the Unitholders
resulting from their ownership interests in the Partnership is the obligation of
the Unitholders.
 
     EACH PERSON CONSIDERING AN INVESTMENT IN THE PARTNERSHIP SHOULD CONSULT
THEIR TAX ADVISOR CONCERNING THE IMPACT OF STATE AND LOCAL TAXES ON THEIR
OWNERSHIP OF UNITS.
 
     Investment by Tax-Exempt Entities.
 
     Certain entities otherwise generally exempt from federal income tax
generally will be taxed on net unrelated business taxable income in excess of
$1,000. A tax-exempt Unitholder's share of the Partnership's income will
constitute unrelated business taxable income ("UBTI") unless an exclusion
applies. Among the exclusions from UBTI are interest income, royalty income and
gains from the sale of property other than inventory or property held for sale
to customers in the ordinary course of business. However, interest income,
royalty income or gain from the sale of such property otherwise excluded from
tax as UBTI may be subject to tax if the property producing the income or gain
is debt financed. Depending on the investments made by the Partnership, all or
part of the income generated by the Partnership may constitute UBTI to a
tax-exempt Unitholder.
 
                                       101
<PAGE>   107
 
     A tax-exempt Unitholder may be required to file a federal income tax return
if its share of gross income from the Partnership (when added to its gross
income from other unrelated business) is $1,000 or more, even if it does not
realize net unrelated business taxable income with respect to its investment in
Units. The Partnership will furnish information annually to enable tax-exempt
Unitholders to determine whether they are obligated by reason of the ownership
of the Units to file federal income tax returns with respect to unrelated
business taxable income.
 
     TAX-EXEMPT ENTITIES ARE URGED TO CONSULT THEIR OWN TAX ADVISORS CONCERNING
THE FEDERAL INCOME TAX CONSEQUENCES OF THE OWNERSHIP OF PARTNERSHIP INTERESTS.
 
     Nominee Reporting. Persons who hold an interest in the Partnership as a
nominee for another person are required to furnish to the Partnership (i) the
name, address and taxpayer identification number of the nominee and the
beneficial owner; (ii) whether the beneficial owner is (a) a person that is not
a U.S. person, (b) a foreign government, an international organization or any
wholly-owned agency or instrumentality of either of the foregoing or (c) a
tax-exempt entity; (iii) the amount and description of Units held, acquired or
transferred for the beneficial owner; and (iv) certain information including the
dates of acquisitions and transfers, means of acquisitions and transfers, and
acquisition cost for purchases, as well as the amount of net proceeds from
sales. Brokers and financial institutions are required to furnish additional
information, including whether they are U.S. persons and certain information on
Units they acquire, hold or transfer for their own account. A penalty of $50 per
failure (up to a maximum of $100,000 per calendar year) is imposed by the Code
for failure to report such information to the Partnership. The nominee is
required to supply the beneficial owner of the Units with the information
furnished to the Partnership.
 
     ERISA Considerations. Fiduciaries of pension, profit sharing or stock bonus
plans, Keogh Plans, and other qualified employee benefit plans and other plans
or arrangements subject to Title its of the Employee Retirement Income Security
Act of 1974 ("ERISA") are required to determine whether an investment in Units
will satisfy the standards set forth in ERISA. Among other factors, such
fiduciaries should consider whether the investment satisfies (a) the exclusive
purpose rule of Section 404(a)(1)(A) of ERISA, (b) the prudence requirements of
Section 404(a)(1)(B) of ERISA, (c) the diversification requirements of Section
404(a)(1)(C) of ERISA and (d) the requirement of Section 404(a)(1)(D) of ERISA
that the investment be in accordance with the documents and instruments
governing the plan or arrangement. IRAs that are not sponsored by an employer or
employee organization and Keogh Plans whose only participants are partners or
sole promoters are not generally subject to ERISA; however, fiduciaries of such
plans should consider whether the investment is authorized by the appropriate
governing instruments. In particular, all fiduciaries should consider the
unrelated business taxable income rules discussed under "Federal Income Tax
Considerations Other Tax Consequences -- Investment by Tax-Exempt Entities"
above.
 
     In addition, section 406 of ERISA and section 4975 of the Code (which
applies to IRAs and Keogh Plans that are not subject to ERISA in addition to
plans or arrangements that are subject to ERISA) prohibit a fiduciary of an
employee benefit plan or other arrangement from engaging in certain transactions
involving "plan assets" with parties that are "parties in interest" under ERISA
or "disqualified persons" under the Code with respect to the plan or
arrangement. Neither ERISA nor the Code defines "plan assets." The United States
Department of Labor, however, has issued final regulations defining "plan
assets" for purposes of ERISA and the Code. The Partnership will qualify for the
"publicly offered security" exception contained in such regulations if the Units
are (a) "freely transferable," (b) part of a class of securities that is "widely
held," and (c) are sold as either part of a class of securities registered under
section 12(b) or 12(g) of the Exchange Act or part of an offering of securities
to the public pursuant to an effective registration statement under the
Securities Act. The Partnership believes that the Units should be considered
"publicly offered securities" within the meaning of this exception and that its
assets should not be considered "plan assets" for purposes of such regulations.
 
     If the assets of the Partnership were deemed to be plan assets of plans or
IRAs ("Plans") that are Unitholders, the Partnership, the General Partner and
any other person or entity who exercises control over the assets of the
Partnership would be a fiduciary with respect to such Plans. As fiduciaries,
they would be subject to the fiduciary requirements of ERISA and would be
"parties in interest" and "disqualified persons"
 
                                       102
<PAGE>   108
 
with respect to such Plans. As a result, certain transactions involving the
assets of the Partnership might constitute prohibited transactions. If a
prohibited transaction occurs, any fiduciary with respect to a Plan subject to
ERISA that has engaged in the prohibited transaction could be personally liable
to (i) restore to the Plan any profit realized on the transaction and (ii)
reimburse the Plan for any loss suffered by the Plan as a result of the
transaction. In addition, any disqualified person involved in the prohibited
transaction would be (i) liable for the payment of an excise tax and (ii)
required to correct the prohibited transaction. If a prohibited transaction
occurs with respect to an IRA, the excise tax does not apply; however, the IRA
will lose its tax-exempt status.
 
     Each entity that is or may be subject to ERISA or section 4975 of the Code
should consult its own tax advisors concerning the effect of its ownership of
Units under ERISA and Section 4975 of the Code.
 
ADMINISTRATIVE MATTERS
 
     Returns and Audits. The Partnership, EDPO and HEPO each uses a calendar
year for income tax purposes. Each Unitholder receives a report each year
showing his share of the Partnership's income, gains, losses and deductions for
the preceding year and other reasonably available information necessary for the
preparation of his individual federal income tax returns. It will be the
responsibility of each Unitholder, however, to complete and file his individual
returns. A partner must report partnership items on his own tax return
consistently with the manner they are reported on the partnership's return,
unless the inconsistency is identified on the partner's return. Therefore, each
Unitholder should complete his own individual federal income tax return, to the
extent that it relates to his share of the Partnership's tax items, in a manner
that is consistent with the tax reporting information that he receives from the
Partnership, unless he specifically identifies any inconsistency on his own
return. Intentional or negligent disregard of this consistency requirement may
subject the Unitholder to substantial penalties.
 
     The Partnership, EDPO and HEPO each maintains its books in accordance with
the accrual method of accounting and the federal income tax returns will be
filed in accordance with that method. The Regulations provide that no method of
accounting is acceptable unless, in the opinion of the IRS, it clearly reflects
income. Accordingly, there can be no assurance that the IRS will not seek to
require the Partnership or an operating partnership to treat particular items
under a method of accounting different from that adopted on the basis that, with
respect to such items, the use of the method adopted does not clearly reflect
income. This could result in adverse tax consequences to the Unitholders.
 
     Although the Partnership is not required to pay any federal income tax, it
must nevertheless file information returns. These returns are subject to audit
by the IRS. The tax liability of each Unitholder with respect to any item of the
Partnership's income, gains, losses, or deductions is determined at the
partnership level in a unified partnership proceeding. In addition, pursuant to
the Taxpayer Relief Act of 1997, any penalty which relates to an adjustment to a
partnership item is determined at the partnership level for partnership tax
years ending after August 5, 1997. The Taxpayer Relief Act of 1997 also alters
the tax reporting system and the deficiency collection system applicable to
large partnerships and would make certain additional changes to the treatment of
large partnerships, such as the Partnership. These provisions are intended to
simplify the administration of the tax rules governing large partnerships. The
application of these new rules are optional and the General Partner has not
determined whether the Partnership will elect to have these provisions apply to
the Partnership and the Unitholders. The General Partner of the Partnership is
designated the "tax matters partner," and, as such, has primary responsibility
for partnership-level matters involving the IRS, including the power to extend
the statute of limitations for all partners as to partnership items. The General
Partner, under some circumstances, may enter into settlement agreements with the
IRS concerning items that will be binding on each Unitholder who owns less than
a 1% interest in the Partnership. In the absence of a settlement, the General
Partner, as the tax matters partner, may choose to litigate, in which event all
Unitholders would have the right to participate and, regardless of
participation, would be bound by the outcome of the litigation. Individual
partners (including partners who own less than a 1% interest in the Partnership)
generally have certain rights under the partnership audit rules, including the
right to elect not to be bound by any settlement agreement entered into by the
tax matters partner on his behalf and the right to aggregate their interests
into groups of 5% or more for purposes of receiving direct notice from the IRS
of
 
                                       103
<PAGE>   109
 
commencement or completion of administrative proceedings. Although the IRS is
required to notify a Unitholder of the commencement or completion of
administrative proceedings only if the Unitholder holds a 1% or more interest in
the Partnership, the Partnership intends to so notify all other Unitholders.
 
     If the Partnership were audited and the IRS were successful in adjusting
partnership items, such adjustments would change the federal income tax
liabilities of Unitholders and possibly require each Unitholder to file an
amended tax return. If any additional tax is due, a Unitholder will also be
required to pay the tax determined to be due, the interest on such tax
deficiency and any applicable penalty. In addition, any audit of the
Partnership's tax return could result in an audit of a Unitholder's entire tax
return and could result in changes to non-partnership items.
 
     Possible Penalties. If there is an underpayment of a Partner's tax
liability attributable to misstatement of his allocable share of Partnership
items, the Partner may be liable for a penalty equal to 20% of such
underpayment. In general, an understatement of tax liability for this purpose
includes negligence or disregard for the rules, a substantial understatement of
income tax or a substantial valuation misstatement. An understatement of tax
liability is substantial if it exceeds the greater of 10% of the tax required to
be shown on the return for the taxable year or $5,000 ($10,000 for certain
corporations). For this purpose, the amount of an understatement does not
include any portion of the understatement for which there existed "substantial
authority" for the position of the taxpayer or with respect to which adequate
disclosure of the relevant facts was made on the return or in a schedule to the
return and provided that there was a reasonable basis for the position taken on
the return. The Regulations provide that disclosure regarding the tax treatment
of partnership items generally is to be made on the return of the partnership or
on an attachment thereto rather than on the return of any partner. A Partner may
make adequate disclosure on his return, however, by attaching a statement to
such return and by filing a copy of such statement with the IRS Service Center
with which the Partnership files its return. In the case of a "tax shelter,"
however, the disclosure exception does not apply and the exception for
substantial authority applies only if there is both substantial authority for
the position and the taxpayer "reasonably believed that the tax treatment of
such item by the taxpayer was more likely than not the proper treatment". With
respect to corporate taxpayers, however, there is no "substantial authority"
exception when tax shelter items are involved. In such a case, a corporation may
avoid the substantial understatement penalty only by showing that it acted with
reasonable cause and in good faith in its treatment of the tax shelter item. A
"tax shelter", for this purpose, includes a partnership the principal purpose of
which is the avoidance or evasion of federal income tax. The Partnership
believes that its principal purpose is to generate income from its oil and gas
activities and, accordingly, that it is not a "tax shelter" within the meaning
of the substantial understatement penalty provision.
 
     A substantial valuation misstatement exists if the value of any property
(or the adjusted basis of any property) claimed on a tax return is 200% or more
of the amount determined to be the correct amount of such valuation or adjusted
basis. No penalty is imposed unless the portion of the underpayment attributable
to a substantial valuation misstatement exceeds $5,000 ($10,000 for most
corporations). If the valuation claimed on a return is 400% or more than the
correct valuation, the penalty imposed increases to 40%.
 
     A publicly traded partnership, such as the Partnership, may encounter
situations in which it is difficult for the partnership to fully and accurately
comply with all federal tax reporting requirements. Ownership of partnership
interests by nominees (e.g., in street name of a broker) increases this
difficulty. If a partnership fails to comply with such requirements, certain
penalties could be assessed against the partnership or its partners.
 
     Tax Shelter Registration. The Partnership is subject to rules regarding the
registration of "tax shelters." The registration requirements provide that a tax
shelter organizer must register the tax shelter investment with the IRS and
describe, among other things, the tax benefits associated with such investment.
The IRS is required to assign each tax shelter a registration number and the tax
shelter organizer must notify the investors regarding the tax shelter's
registration number. The investor must report this number on a form attached to
his individual income tax return for any year in which he claims any income,
gain, loss, deduction, or credit with respect to such tax shelter.
 
                                       104
<PAGE>   110
 
     The Partnership is registered as a "tax shelter" with the IRS. The
Partnership's tax shelter identification number is 85193000156. The Partnership
will supply such identification number to Unitholders along with their annual
tax reporting information package. Any person reporting income, loss, deduction
or credit attributable to the Partnership will be obligated to provide such tax
shelter registration number on Form 8271 and attach such form to his return.
Failure to include such number with the return could result in the imposition of
a penalty of $250 for each such failure unless due to reasonable cause. If a
Unitholder sells or otherwise transfers a Unit, he must give the transferee a
prescribed written statement containing the registration number with the
instructions concerning its use, subject to a $100 penalty for each failure to
do so.
 
     ISSUANCE OF A REGISTRATION NUMBER DOES NOT INDICATE THAT THIS INVESTMENT OR
THE CLAIMED TAX BENEFITS HAVE BEEN REVIEWED, EXAMINED OR APPROVED BY THE
INTERNAL REVENUE SERVICE.
 
     Investor Lists. Because the Partnership will be registered as a tax
shelter, it will be required to maintain a list identifying each person who was
sold an interest in such shelter including the investor's name, address, and
taxpayer identification number, the number of Units acquired and the date of the
acquisition, the name of the person from whom the Units were acquired and
certain other information. This list must be made available to the IRS upon
request and all information required to be on such list must be retained for
seven years. Each Unitholder generally will be required to maintain a list with
respect to any transferee of his Units. The penalty for failure to maintain a
list of investors is $50 for each person with respect to whom there is a
failure, unless such failure is due to reasonable cause and not willful neglect.
HEPGP, as general partner of the Partnership, will use its best efforts to
comply with this rule.
 
            INVESTMENT IN THE PARTNERSHIP BY EMPLOYEE BENEFIT PLANS
 
     An investment in the Partnership by an employee benefit plan is subject to
certain additional considerations because the investments of such plans are
subject to the fiduciary responsibility and prohibited transaction provisions of
ERISA, and restrictions imposed by Section 4975 of the Code. As used herein, the
term "employee benefit plan" includes, but is not limited to, qualified pension,
profit sharing and stock bonus plans, Keogh plans, simplified employee pension
plans and tax deferred annuities or Individual Retirement Accounts established
or maintained by an employer or employee organization. Among other things,
consideration should be given to (a) whether such investment is prudent under
Section 404(a)(1)(B) of ERISA; (b) whether in making such investment, such plan
will satisfy the diversification requirement of Section 404(a)(1)(C) of ERISA;
and (c) whether such investment will result in recognition of unrelated business
taxable income by such plan and, if so, the potential after-tax investment
return. See "Material Federal Income Tax Considerations -- Other Tax
Consequences -- Investment by Tax-Exempt Entities." The person with investment
discretion with respect to the assets of an employee benefit plan (a
"fiduciary") should determine whether an investment in the Partnership is
authorized by the appropriate governing instrument and is a proper investment
for such plan.
 
     Section 406 of ERISA and Section 4975 of the Code (which also applies to
Individual Retirement Accounts that are not considered part of an employee
benefit plan) prohibit an employee benefit plan from engaging in certain
transactions involving "plan assets" with parties that are "parties in interest"
under ERISA or "disqualified persons" under the Code with respect to the plan.
 
     In addition to considering whether the purchase of Units is a prohibited
transaction, a fiduciary of an employee benefit plan should consider whether
such plan will, by investing in the Partnership, be deemed to own an undivided
interest in the assets of the Partnership, with the result that the General
Partner also would be a fiduciary of such plan and the operations of the
Partnership would be subject to the regulatory restrictions of ERISA, including
its prohibited transaction rules, as well as the prohibited transaction rules of
the Code.
 
     The Department of Labor regulations provide guidance with respect to
whether the assets of an entity in which employee benefit plans acquire equity
interests would be deemed "plan assets" under certain circumstances. Pursuant to
these regulations, an entity's assets would not be considered to be "plan
assets" if, among other things, (a) the equity interest acquired by employee
benefit plans are publicly offered securities,
 
                                       105
<PAGE>   111
 
i.e., the equity interests are widely held by 100 or more investors independent
of the issuer and each other, freely transferable and registered pursuant to
certain provisions of the federal securities laws, (b) the entity is an
"operating company," i.e., it is primarily engaged in the production or sale of
a product or service other than the investment of capital either directly or
through a majority owned subsidiary or subsidiaries or (c) there is no
significant investment by benefit plan investors, which is defined to mean that
less than 25% of the value of each class of equity interest (disregarding
certain interests held by the General Partner, its affiliates, and certain other
persons) is held by the employee benefit plans referred to above, Individual
Retirement Accounts and other employee benefit plans not subject to ERISA (such
as governmental plans). The Partnership's assets should not be considered "plan
assets" under these regulations because it is expected that the investment will
satisfy the requirements in (a) and (b) above and may also satisfy the
requirements in (c).
 
     Plan fiduciaries contemplating a purchase of Units should consult with
their own counsel regarding the consequences under ERISA and the Code in light
of the serious penalties imposed on persons who engage in prohibited
transactions or other violations.
 
                                  UNDERWRITING
 
     The Partnership has entered into an Underwriting Agreement (the
"Underwriting Agreement") with the underwriters listed in the table below (the
"Underwriters"), for whom EVEREN Securities, Inc., Wheat First Union, a division
of Wheat First Securities, Inc. and Ladenburg Thalmann & Co. Inc. are acting as
representatives (the "Representatives"). Subject to the terms and conditions of
the Underwriting Agreement, the Partnership has agreed to sell to the
Underwriters, and each of the Underwriters has severally agreed to purchase, the
number of Class C Units set forth opposite each Underwriters' name in the table
below:
 
   
<TABLE>
<CAPTION>
                        UNDERWRITER                           NUMBER OF UNITS
                        -----------                           ---------------
<S>                                                           <C>
EVEREN Securities, Inc......................................       504,000
Wheat First Securities, Inc. ...............................       504,000
Ladenburg Thalmann & Co. Inc................................       504,000
Robert W. Baird & Co. Incorporated..........................        36,000
Dain Rauscher Incorporated .................................        36,000
Hoak Breedlove Wesneski & Co. ..............................        36,000
Jefferies & Company.........................................        36,000
Johnson Rice & Company L.L.C. ..............................        36,000
Morgan Keegan & Company, Inc. ..............................        36,000
Petrie Parkman & Co. .......................................        36,000
Suntrust Equitable Securities Corporation...................        36,000
                                                                 ---------
          Total.............................................     1,800,000
                                                                 =========
</TABLE>
    
 
     Subject to the terms and conditions of the Underwriting Agreement, the
Underwriters have agreed to purchase all of the Class C Units being sold to the
public pursuant to the Underwriting Agreement, if any is purchased (excluding
Class C Units covered by the over-allotment option granted therein). In the
event of a default by any Underwriter, the Underwriting Agreement provides that,
in certain circumstances, purchase commitments of the nondefaulting Underwriters
may be increased or decreased or the Underwriting Agreement may be terminated.
 
   
     The Representatives have advised the Partnership that the Underwriters
propose to offer the Class C Units directly to the public at the public offering
price set forth on the cover page of this Prospectus and to certain dealers at
such price less a concession of not more than $.40 per Class C Unit.
Additionally, the Underwriters may allow, and such dealers may reallow, a
concession of not in excess of $.10 per Class C Unit to certain other dealers.
After the Offering, the initial public offering price and other selling terms
may be changed by the Underwriters.
    
 
                                       106
<PAGE>   112
 
   
     The Partnership has granted to the Underwriters an option, exercisable by
the Representatives within 30 days after the date of the Underwriting Agreement,
to purchase up to 270,000 Class C Units at the same price per share to be paid
by the Underwriters for the other shares offered hereby. If the Underwriters
purchase any of such additional Units pursuant to this option, each Underwriter
will be committed to purchase such additional Units in approximately the same
proportion as set forth in the table above. The Underwriters may exercise such
option only for the purpose of covering over-allotments, if any, made in
connection with the distribution of the Class C Units offered hereby.
    
 
     The offering of the Class C Units is made for delivery when, as and if
accepted by the Underwriters and subject to prior sale and to withdrawal,
cancellation or modification of the offering without notice. The Underwriters
reserve the right to reject an order for the purchase of Class C Units in whole
or in part.
 
     The Representatives have advised the Partnership that the Underwriters will
not confirm sales of Class C Units to accounts over which they exercise
discretionary authority.
 
     The Partnership and Hallwood G.P.'s executive officers and directors have
agreed that, without the prior written consent of EVEREN Securities, Inc., they
will not sell or otherwise dispose of any Class C Units for a period of 180 days
after the date of this Prospectus, other than as gifts to family members and
transfers to wholly owned affiliates.
 
     Because the National Association of Securities Dealers, Inc. ("NASD") views
the Class C Units offered hereby as interests in a direct participation program,
the offering is being made in compliance with Rule 2810 of the NASD's Conduct
Rules. Investor suitability of the Class C Units should be judged similarly to
the suitability of other securities which are listed for trading on a national
securities exchange.
 
     The Company has agreed to indemnify the Underwriters and their controlling
persons against certain liabilities, including liabilities under the Securities
Act arising out of or based upon untrue statements or provisions in this
Prospectus or the Registration Statement of which the Prospectus is a part, and
to contribute to payments the Underwriters may be required to make in respect
thereof (including legal and other defense costs and expenses).
 
     The Representatives, on behalf of the Underwriters, may engage in
over-allotment, stabilizing transactions, syndicate covering transactions and
penalty bids in accordance with Regulation M under the Exchange Act.
Over-allotment involves syndicate sales in excess of the offering size, which
creates a syndicate short position. Stabilizing transactions permit bids to
purchase the underlying security so long as the stabilizing bids do not exceed a
specified maximum. Syndicate covering transactions involve purchases of Class C
Units in the open market after the distribution has been completed in order to
cover syndicate short positions. Penalty bids permit the Representatives to
reclaim a selling concession from a syndicate member when the Class C Units
originally sold by such syndicate member are purchased in a syndicate covering
transaction to cover syndicate short positions. Such stabilizing transactions,
syndicate covering transactions and penalty bids may cause the price of the
Class C Units to be higher than it would otherwise be in the absence of such
transactions. These transactions may be effected on the American Stock Exchange
or otherwise and, if commenced, may be discontinued at any time.
 
     The Representatives have performed investment banking and other financial
advisory services for the Partnership in the past, for which they have received
customary compensation.
 
                                 LEGAL MATTERS
 
     The validity of the Class C Units and certain tax matters will be passed
upon for the Partnership by Jenkens & Gilchrist, A Professional Corporation,
Dallas, Texas. Certain legal matters in connection with the Class C Units will
be passed upon for the Underwriters by Vinson & Elkins L.L.P., Dallas, Texas.
 
                                       107
<PAGE>   113
 
                                    EXPERTS
 
     The consolidated financial statements of the Partnership as of December 31,
1996 and 1995 and for each of the three years in the period ended December 31,
1996, and the balance sheet of the HEPGP Ltd. as of December 31, 1996, included
and incorporated by reference in this Prospectus have been audited by Deloitte &
Touche LLP, independent auditors, as stated in their reports, which are included
and incorporated by reference herein, and have been so included and incorporated
in reliance upon the reports of such firm given upon their authority as experts
in accounting and auditing.
 
     The information included and incorporated by reference herein regarding the
total proved reserves of the Partnership was prepared by the HPI's in-house
engineers. A portion was reviewed by Williamson Petroleum Consultants, Inc. as
stated in their letter report with respect thereto. The reserve review letter of
Williamson Petroleum Consultants, Inc. is filed as an exhibit to the
Registration Statement of which this Prospectus is a part, in reliance upon the
authority of said firm as experts with respect to the matters covered by its
report and the giving of its report.
 
                             AVAILABLE INFORMATION
 
     The Partnership has filed with the SEC in Washington, D.C., a Registration
Statement on Form S-1 (the "Registration Statement") under the Securities Act,
with respect to the securities offered by this Prospectus. Certain of the
information contained in the Registration Statement is omitted from this
Prospectus, and reference is hereby made to the Registration Statement and
exhibits and schedules relating thereto for further information with respect to
the Partnership and the securities offered by this Prospectus. The Partnership
is subject to the informational requirements of the Exchange Act, and, in
accordance therewith, files reports and other information with the SEC. Such
reports and other information are available for inspection at, and copies of
such materials may be obtained upon payment of the fees prescribed therefor by
the rules and regulations of the SEC from, the SEC at its principal offices
located at Judiciary Plaza, 450 Fifth Street, N.W., Room 1024, Washington, D.C.
20549, and at the Regional Offices of the SEC located at Citicorp Center, 500
West Madison Street, Suite 1400, Chicago, Illinois 60661-2511, and at 7 World
Trade Center, New York, New York 10048 or may be obtained on the Internet at
http://www.sec.gov. In addition, the Class C Units of the Partnership are traded
on the American Stock Exchange, and such reports and other information may be
inspected at the offices of the American Stock Exchange, Inc., 86 Trinity Place,
New York, New York 10006-1881.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
     The following documents or portions thereof filed by the Partnership are
hereby incorporated by reference in this Prospectus:
 
        (i)  the Partnership's Annual Report on Form 10-K for the fiscal year
             ended December 31, 1996;
 
        (ii)  the Partnership's Quarterly Reports on Form 10-Q for the quarters
              ended March 31, 1997, June 30, 1997 and September 30, 1997;
 
        (iii) the description of the Class C Units set forth in the Registration
              Statement on Form 8-A, filed with the SEC on December 8, 1995,
              including any amendment or report filed for the purpose of
              updating such description.
 
     In addition, all documents subsequently filed by the Partnership pursuant
to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this
Prospectus and prior to the termination of the offering of Class C Units made
hereby shall be deemed to be incorporated by reference into this Prospectus and
to be a part hereof from the date of filing of such documents. Any statement
contained herein or in a document incorporated or deemed to be incorporated by
reference herein shall be deemed to be modified or superseded for the purposes
of this Prospectus to the extent that a statement contained herein or in any
subsequently filed document which is or is deemed to be incorporated by
reference herein modifies or supersedes such statement.
 
                                       108
<PAGE>   114
 
Any such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Prospectus.
 
     The Partnership will provide without charge to each person to whom a copy
of this Prospectus is delivered, upon oral or written request of such person, a
copy of any and all of the documents incorporated by reference herein (other
than exhibits and schedules to such documents, unless such exhibits or schedules
are specifically incorporated by reference into such documents). Such requests
should be directed to Hallwood Energy Partners, L.P., 4582 South Ulster Street
Parkway, Suite 1700, Denver, Colorado 80237, Attention: Investor Relations.
 
                                       109
<PAGE>   115
 
                           GLOSSARY OF CERTAIN TERMS
 
     The definitions set forth below shall apply to the indicated terms as used
in this Prospectus. All volumes of natural gas referred to herein are stated at
the legal pressure base of the state or area where the reserves exist and at 60
degrees Fahrenheit and in most instances are rounded to the nearest major
multiple.
 
     Bbl. One stock tank barrel, or 42 U.S. gallons liquid volume, used herein
in reference to crude oil or other liquid hydrocarbons.
 
     Bbls/d. Stock tank barrels per day.
 
     Bcf. Billion cubic feet.
 
     Bcfe. Billion cubic feet equivalent, determined using the ratio of six Mcf
of natural gas to one Bbl of crude oil, condensate or natural gas liquids.
 
     Class A Units. A Unit representing a fractional part of the partnership
interests of all limited partners of the Partnership and their assignees and
having the rights and obligations specified with respect to a Class A Unit in
the Partnership Agreement.
 
     Class B Units. A Unit representing a fractional part of the partnership
interests of all limited partners of the Partnership and their assignees and
having the rights and obligations specified with respect to a Class B Unit in
the Partnership Agreement.
 
     Class C Units. A Unit representing a fractional part of the partnership
interests of all limited partners of the Partnership and their assignees and
having the rights and obligations specified with respect to a Class C Unit in
the Partnership Agreement.
 
     Code. The Internal Revenue Code of 1986, as amended.
 
     Completion. The installation of permanent equipment for the production of
oil or gas or, in the case of a dry hole, the reporting of abandonment to the
appropriate agency.
 
     Counsel. Jenkens & Gilchrist, a Professional Corporation, counsel to the
Partnership.
 
     Credit Facilities. Collectively, the Second Amended and Restated Credit
Agreement of the Partnership and the Amended and Restated Note Purchase
Agreement of the Partnership, as amended and restated as of May 31, 1997.
 
     Delaware Act. The Delaware Revised Uniform Limited Partnership Act, 6 Del.
C. Sections 17-101, et seq., as amended, supplemented or restated from time to
time, and any successor to such statute.
 
     Developed acreage. The number of acres which are allocated or assignable to
producing wells or wells capable of production.
 
     Development well. A well drilled within the proved area of an oil or gas
reservoir to the depth of a stratigraphic horizon known to be productive.
 
     Dry hole or well. A well found to be incapable of producing hydrocarbons in
sufficient quantities such that proceeds from the sale of such production exceed
production expenses and taxes.
 
     EDPO. EDP Operating, Ltd., a Delaware limited partnership, and one of the
Partnership's Operating Partnerships.
 
     Exploratory well. A well drilled to find and produce oil or gas reserves
not classified as proved, to find a new reservoir in a field previously found to
be productive of oil or gas in another reservoir or to extend a known reservoir.
 
     Farm-in or farm-out. An agreement whereunder the owner of a working
interest in an oil and gas lease assigns the working interest or a portion
thereof to another party who desires to drill on the leased acreage. Generally,
the assignee is required to drill one or more wells in order to earn its
interest in the acreage. The
 
                                       110
<PAGE>   116
 
assignor usually retains a royalty or reversionary interest in the lease. The
interest received by an assignee is a "farm-in" while the interest transferred
by the assignor is a "farm-out."
 
     Field. An area consisting of a single reservoir or multiple reservoirs all
grouped on or related to the same individual geological structural feature
and/or stratigraphic condition.
 
     Finding costs. Costs associated with acquiring and developing proved oil
and gas reserves which are capitalized by the Partnership pursuant to generally
accepted accounting principles, including all costs involved in acquiring
acreage, geological and geophysical work and the cost of drilling and completing
wells.
 
     Gas Balancing. Monitoring the difference between the volume of gas from a
well actually received by each owner and the volume that should be allocated to
such owner based on the percentage of the well owned.
 
     General Partner. HEPGP Ltd., a Colorado limited partnership, and its
successors and permitted assigns as general partner of the Partnership and the
Operating Partnerships.
 
     Gross acres or gross wells. The total acres or wells, as the case may be,
in which a working interest is owned.
 
     Hallwood G.P. Hallwood G.P., Inc., a Delaware corporation, and the general
partner of the General Partner.
 
     Hallwood Group. The Hallwood Group Incorporated, a Delaware corporation,
and the parent of Hallwood G.P.
 
     HCRC. Hallwood Consolidated Resources Corporation, a publicly traded
Delaware corporation, the common stock of which the Partnership owns 46%.
 
     HEC. Hallwood Energy Corporation, the previous general partner of the
Partnership.
 
     HEPGP. HEPGP Ltd., a Colorado limited partnership, and the General Partner
of the Partnership.
 
     HEPO. HEP Operating Partners, L.P., a Delaware limited partnership, and one
of the Partnership's Operating Partnerships.
 
     HPI. Hallwood Petroleum, Inc., a Delaware corporation, that is a 96% owned
subsidiary of the Partnership.
 
     IRS. The United States Internal Revenue Service.
 
     Mbbls. One thousand barrels of crude oil or other liquid hydrocarbons.
 
     Mbbls/d. One thousand barrels of crude oil or other liquid hydrocarbons per
day.
 
     Mcf. One thousand cubic feet.
 
     Mcf/d. One thousand cubic feet per day.
 
     Mcfe. One thousand cubic feet equivalent, determined using the ratio of six
Mcf of natural gas to one Bbl of crude oil, condensate or natural gas liquids,
which approximates the relative energy content of crude oil, condensate and
natural gas liquids as compared to natural gas. Prices have historically been
higher or substantially higher for crude oil than natural gas on an energy
equivalent basis.
 
     Mmbtu. One million British Thermal Units, which is the English system unit
of heat used to measure the heat content of natural gas.
 
     Mmcf. One million cubic feet.
 
     Mmcf/d. One million cubic feet per day.
 
     Mmcfe. One million cubic feet equivalent, determined using the ratio of six
Mcf of natural gas to one Bbl of crude oil, condensate or natural gas liquids.
 
     Net acres or net wells. The sum of the fractional working interests owned
in gross acres or gross wells.
 
                                       111
<PAGE>   117
 
     NYMEX. New York Mercantile Exchange.
 
     Operating Partnerships. EDP Operating, Ltd., a Delaware limited
partnership, and HEP Operating Partners, L.P., a Delaware limited partnership,
and any successors thereto.
 
     Operating Partnership Agreements. The limited partnership agreements
governing the Operating Partnerships, included as exhibits to the registration
statement of which this prospectus is a part.
 
     Partnership. Hallwood Energy Partners, L.P., a publicly traded Delaware
limited partnership.
 
     Partnership Agreement. The Third Amended and Restated Agreement of Limited
Partnership of the Partnership as it may be amended, restated or supplemented
from time to time.
 
     Present value. When used with respect to oil and gas reserves, the
estimated future gross revenue to be generated from the production of proved
reserves, net of estimated production and future development costs, using prices
and costs in effect as of the date indicated, without giving effect to
nonproperty-related expenses such as general and administrative expenses, debt
service and future income tax expense or to depreciation, depletion and
amortization, discounted using an annual discount rate of 10%.
 
     Productive well. A well that is found to be capable of producing
hydrocarbons in sufficient quantities such that proceeds from the sale of such
production exceed production expenses and taxes.
 
     Proved developed nonproducing reserves. Proved developed reserves expected
to be recovered from zones behind casing in existing wells.
 
     Proved developed producing reserves. Proved developed reserves that are
expected to be recovered from completion intervals currently open in existing
wells and able to produce to market.
 
     Proved developed reserves. Proved reserves that can be expected to be
recovered from existing wells with existing equipment and operating methods.
 
     Proved reserves. The estimated quantities of crude oil, natural gas and
natural gas liquids that geological and engineering data demonstrate with
reasonable certainty to be recoverable in future years from known reservoirs
under existing economic and operating conditions.
 
     Proved undeveloped location. A site on which a development well can be
drilled consistent with spacing rules for purposes of recovering proved
undeveloped reserves.
 
     Proved undeveloped reserves. Proved reserves that are expected to be
recovered from new wells on undrilled acreage or from existing wells where a
relatively major expenditure is required for recompletion.
 
     Recompletion. The completion for production of an existing well bore in
another formation from that in which the well has been previously completed.
 
     Reservoir. A porous and permeable underground formation containing a
natural accumulation of producible oil and/or gas that is confined by
impermeable rock or water barriers and is individual and separate from other
reservoirs.
 
     Royalty interest. An interest in an oil and gas property entitling the
owner to a share of oil or gas production free of costs of production.
 
     Shut-in Well. A producing well that is not currently producing oil or gas.
 
     Successful Well. A well for which production casing has been run for a
completion attempt.
 
     3-D seismic. Advanced technology method of detecting accumulations of
hydrocarbons identified through a three-dimensional picture of the subsurface
created by the collection and measurement of the intensity and timing of sound
waves transmitted into the earth as they reflect back to the surface.
 
     2-D seismic. A two-dimensional seismic picture of the subsurface.
 
                                       112
<PAGE>   118
 
     Transfer Agent. Registrar & Transfer Co. or such bank, trust company or
other person (including the General Partner or one of its affiliates) as shall
be appointed from time to time by the Partnership to act as registrar and
transfer agent for the Units.
 
     Transfer Application. The application which all purchasers of Class C Units
in this Offering and purchasers of Class C Units in the open market who wish to
become Class C Unitholders of record must deliver before the transfer of such
Class C Units will be registered and before cash distributions and federal
income tax allocations will be made to the transferee. A form of Transfer
Application is included in this Prospectus as Appendix A.
 
     Underwriters. The underwriters of the Offering, for which EVEREN
Securities, Inc., Wheat First Securities, Inc. and Ladenburg Thalmann & Co. Inc.
are acting as the representatives.
 
     Undeveloped acreage. Lease acreage on which wells have not been drilled or
completed to a point that would permit the production of commercial quantities
of oil and gas regardless of whether such acreage contains proved reserves.
 
     Unit. Any of a Class A Unit, Class B Unit or Class C Unit.
 
     United States Citizen. (a) a citizen of the United States, (b) a
corporation organized under the laws of the United States or of any state or
territory thereof, provided that none of the stock of the corporation is owned,
held or controlled by a non-citizen who is a citizen of a country that denies to
United States citizens or corporations privileges to own interests in oil and
gas leases similar to the privileges of non-citizens to own interest in oil and
gas leases on federal lands ("United States Corporation") or (c) an association
(including a partnership or a trust) each of the members of which is a citizen
of the United States or a United States Corporation.
 
     Unitholder. The holder of record of a Unit.
 
     Working interest. The operating interest that gives the owner the right to
drill, produce and conduct operating activities on the property and a share of
production.
 
     Workover. Major remedial operations required to maintain, restore or
increase production rates.
 
                                       113
<PAGE>   119
 
              INDEX TO FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
<TABLE>
<S>                                                           <C>
HALLWOOD ENERGY PARTNERS, L.P.
Independent Auditors' Report................................   F-2
Consolidated Balance Sheets at December 31, 1996 and 1995...   F-3
Consolidated Statements of Operations for the years ended
  December 31, 1996, 1995 and 1994..........................   F-5
Consolidated Statements of Partners' Capital for the years
  ended December 31, 1996, 1995 and 1994....................   F-6
Consolidated Statements of Cash Flows for the years ended
  December 31, 1996, 1995 and 1994..........................   F-7
Notes to Consolidated Financial Statements..................   F-8
Supplemental Oil and Gas Reserve
  Information -- (Unaudited)................................  F-23
Consolidated Balance Sheet at September 30, 1997
  (Unaudited)...............................................  F-27
Consolidated Statements of Operations for the nine months
  ended September 30, 1997 and 1996 (Unaudited).............  F-29
Consolidated Statements of Cash Flows for the nine months
  ended September 30, 1997 and 1996 (Unaudited).............  F-30
Notes to Consolidated Financial Statements..................  F-31
 
HEPGP LTD.
Independent Auditor's Report................................  F-34
Balance Sheets at September 30, 1997 and December 31,
  1996......................................................  F-35
Notes to Balance Sheets.....................................  F-36
Supplemental Oil and Gas Reserve Information................  F-39
</TABLE>
 
                                       F-1
<PAGE>   120
 
                          INDEPENDENT AUDITORS' REPORT
 
TO THE PARTNERS OF HALLWOOD ENERGY PARTNERS, L.P.:
 
     We have audited the consolidated financial statements of Hallwood Energy
Partners, L.P. as of December 31, 1996 and 1995 and for each of the three years
in the period ended December 31, 1996, listed on page F-1. These financial
statements are the responsibility of the partnership's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, such consolidated financial statements present fairly, in
all material respects, the financial position of Hallwood Energy Partners, L.P.
at December 31, 1996 and 1995, and the results of its operations and its cash
flows for each of the three years in the period ended December 31, 1996 in
conformity with generally accepted accounting principles.
 
DELOITTE & TOUCHE LLP
 
Denver, Colorado
February 28, 1997
 
                                       F-2
<PAGE>   121
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                          CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                   December 31,
                                                              ----------------------
                                                                1996         1995
                                                              ---------    ---------
<S>                                                           <C>          <C>
CURRENT ASSETS
  Cash and cash equivalents                                   $   5,540    $   4,977
  Accounts receivable:
            Oil and gas revenues                                  9,405        6,767
            Trade                                                 4,507        2,860
  Due from affiliates                                                          2,808
  Prepaid expenses and other current assets                         928        1,091
                                                              ---------    ---------
                      Total                                      20,380       18,503
                                                              ---------    ---------
PROPERTY, PLANT AND EQUIPMENT, at cost
  Oil and gas properties (full cost method):
            Proved mineral interests                            607,875      601,323
            Unproved mineral interests -- domestic                1,244          684
  Furniture, fixtures and other                                   3,366        3,090
                                                              ---------    ---------
                      Total                                     612,485      605,097
  Less accumulated depreciation, depletion,
     amortization and property impairment                      (523,936)    (510,171)
                                                              ---------    ---------
                      Total                                      88,549       94,926
                                                              ---------    ---------
OTHER ASSETS
  Investment in common stock of HCRC                             13,700       11,491
  Deferred expenses and other assets                                163          232
                                                              ---------    ---------
                      Total                                      13,863       11,723
                                                              ---------    ---------
TOTAL ASSETS                                                  $ 122,792    $ 125,152
                                                              =========    =========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                       F-3
<PAGE>   122
 
                        HALLWOOD ENERGY PARTNERS, L. P.
 
                          CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
 
<TABLE>
<S>                                                           <C>          <C>
CURRENT LIABILITIES
  Accounts payable and accrued liabilities                    $  15,185    $  17,344
  Due to affiliates                                                 159
  Net working capital deficit of affiliate                          581        5,061
  Current portion of contract settlement                                         374
  Current portion of long-term debt                               5,810           87
                                                              ---------    ---------
                      Total                                      21,735       22,866
                                                              ---------    ---------
NONCURRENT LIABILITIES
  Long-term debt                                                 29,461       37,557
  Contract settlement                                             2,512        2,397
  Deferred liability                                              1,533        1,718
                                                              ---------    ---------
                      Total                                      33,506       41,672
                                                              ---------    ---------
                         Total Liabilities                       55,241       64,538
                                                              ---------    ---------
MINORITY INTEREST IN AFFILIATES                                   3,336        3,042
                                                              ---------    ---------
COMMITMENTS AND CONTINGENCIES (NOTE 14)
PARTNERS' CAPITAL
  Class A Units -- 9,977,254 Units issued, 9,077,949 and
     9,193,159 outstanding in 1996 and 1995, respectively        61,487       59,614
  Class B Subordinated Units -- 143,773 Units issued
     and outstanding                                              1,254        1,062
  Class C Units -- 664,063 Units issued and outstanding in
     1996                                                         5,146
  General Partner                                                 3,307        2,981
  Treasury Units -- 899,305 and 784,095
     Units in 1996 and 1995, respectively                        (6,979)      (6,085)
                                                              ---------    ---------
                      Partners' Capital -- Net                   64,215       57,572
                                                              ---------    ---------
TOTAL LIABILITIES AND PARTNERS' CAPITAL                       $ 122,792    $ 125,152
                                                              =========    =========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                       F-4
<PAGE>   123
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                         (IN THOUSANDS EXCEPT PER UNIT)
 
<TABLE>
<CAPTION>
                                                                    For the Years Ended
                                                                       December 31,
                                                              -------------------------------
                                                               1996        1995        1994
                                                              -------    --------    --------
<S>                                                           <C>        <C>         <C>
REVENUES:
  Oil revenue                                                 $19,534    $ 17,240    $ 15,470
  Gas revenue                                                  28,618      23,770      26,026
  Pipeline, facilities and other                                2,492       2,444       2,403
  Interest                                                        422         326         583
                                                              -------    --------    --------
                                                               51,066      43,780      44,482
                                                              -------    --------    --------
EXPENSES:
  Production operating                                         11,511      11,298      12,177
  Facilities operating                                            726         794         730
  General and administrative                                    4,540       5,580       5,630
  Depreciation, depletion and amortization                     13,500      15,827      18,168
  Impairment of oil and gas properties                                     10,943       7,345
  Interest                                                      3,878       4,245       3,839
  Litigation settlement                                           230         386       3,370
                                                              -------    --------    --------
                                                               34,385      49,073      51,259
                                                              -------    --------    --------
OTHER INCOME (EXPENSE):
  Equity in earnings (loss) of HCRC                             1,768      (2,273)     (1,499)
  Minority interest in net income of affiliates                (2,723)     (1,465)     (1,822)
  Other                                                                                     5
                                                              -------    --------    --------
                                                                 (955)     (3,738)     (3,316)
                                                              -------    --------    --------
NET INCOME (LOSS)                                              15,726      (9,031)    (10,093)
CLASS C UNIT DISTRIBUTIONS ($1.00 PER UNIT)                       664
                                                              -------    --------    --------
NET INCOME (LOSS) ATTRIBUTABLE TO GENERAL PARTNER, CLASS A
  AND CLASS B LIMITED
  PARTNERS                                                    $15,062    $ (9,031)   $(10,093)
                                                              =======    ========    ========
ALLOCATION OF NET INCOME (LOSS):
General partner                                               $ 2,569    $  1,289    $  1,631
                                                              =======    ========    ========
Class A and Class B Limited partners                          $12,493    $(10,320)   $(11,724)
                                                              =======    ========    ========
          Per Class A Unit and Class B Unit                   $  1.34    $  (1.07)   $  (1.20)
                                                              =======    ========    ========
          Weighted average Class A Units and Class B Units
            and equivalent Units outstanding                    9,292       9,683       9,807
                                                              =======    ========    ========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                       F-5
<PAGE>   124
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                  CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL
                          (IN THOUSANDS EXCEPT UNITS)
 
<TABLE>
<CAPTION>
                                          General    Class A     Class B     Class C     Treasury
                                          Partner     Units       Units       Units        Units
                                          -------    --------    --------    --------    ---------
<S>                                       <C>        <C>         <C>         <C>         <C>
BALANCE, DECEMBER 31, 1993                $ 4,872    $ 95,956     $1,662                  $(3,914)
Increase in Treasury Units                                                                    (26)
Syndication costs                                         (34)
Distributions                              (2,452)     (7,052)      (116)
Net income (loss)                           1,631     (11,528)      (196)
                                          -------    --------     ------                  -------
BALANCE, DECEMBER 31, 1994                  4,051      77,342      1,350                   (3,940)
Increase in Treasury Units                                                                 (2,145)
Syndication costs                                         (63)
Distributions                              (2,359)     (7,517)      (116)
Net income (loss)                           1,289     (10,148)      (172)
                                          -------    --------     ------                  -------
BALANCE, DECEMBER 31, 1995                  2,981      59,614      1,062                   (6,085)
Increase in Treasury Units                                                                   (894)
Syndication costs                                         (12)
Issuance of Class C Units                              (5,146)                $5,146
Distributions                              (2,243)     (5,270)                  (664)
Net income                                  2,569      12,301        192         664
                                          -------    --------     ------      ------      -------
BALANCE, DECEMBER 31, 1996                $ 3,307    $ 61,487     $1,254      $5,146      $(6,979)
                                          =======    ========     ======      ======      =======
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                       F-6
<PAGE>   125
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                            For The Years Ended December 31,
                                                          ------------------------------------
                                                            1996          1995          1994
                                                          --------      --------      --------
<S>                                                       <C>           <C>           <C>
OPERATING ACTIVITIES:
       Net income (loss)                                  $ 15,726      $ (9,031)     $(10,093)
       Adjustments to reconcile net income (loss) to net
          cash provided by operating activities:
          Depreciation, depletion, amortization and
            impairment                                      13,500        26,770        25,513
          Depreciation charged to affiliates                   265           256           348
          Amortization of deferred loan costs and other
            assets                                             167           201           260
          Noncash interest expense                             219           289           394
          Minority interest in net income                    2,723         1,465         1,822
          Take-or-pay recoupment                              (376)         (571)         (313)
          Equity in (earnings) loss of HCRC                 (1,768)        2,273         1,499
          Undistributed (earnings) loss of affiliates         (187)         (886)          158
     Changes in operating assets and liabilities
       provided (used) cash net of noncash activity:
          Oil and gas revenues receivable                   (2,638)         (547)        3,341
          Trade receivables                                 (1,647)          182         2,757
          Due from affiliates                                2,808        (1,161)       (1,529)
          Prepaid expenses and other current assets            163           261         3,590
          Accounts payable and accrued liabilities          (2,159)       (1,052)       (6,172)
          Due to affiliates                                   (373)
                                                          --------      --------      --------
                 Net cash provided by operating
                    activities                              26,423        18,449        21,575
                                                          --------      --------      --------
INVESTING ACTIVITIES:
       Additions to property, plant and equipment           (3,148)       (2,727)       (3,657)
       Exploration and development costs incurred           (9,467)       (8,404)       (9,978)
       Proceeds from sales of property, plant and
          equipment                                          5,294           394         2,599
       Investment in affiliates                               (449)
       Refinance of Spraberry investment                    (4,715)
       Other investing activities                                                          (25)
                                                          --------      --------      --------
                 Net cash used in investing activities     (12,485)      (10,737)      (11,061)
                                                          --------      --------      --------
FINANCING ACTIVITIES:
       Payments of long-term debt                          (11,373)       (7,379)      (12,375)
       Proceeds from long-term debt                          9,000        15,000         4,300
       Distributions paid                                   (8,176)      (10,020)       (9,547)
       Distributions paid by consolidated affiliates to
          minority interest                                 (2,429)       (1,346)       (2,245)
       Payment of contract settlement                         (305)       (1,336)       (1,343)
       Other financing activities                              (92)          (63)          (34)
                                                          --------      --------      --------
                 Net cash used in financing activities     (13,375)       (5,144)      (21,244)
                                                          --------      --------      --------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS           563         2,568       (10,730)
CASH AND CASH EQUIVALENTS:
  BEGINNING OF YEAR                                          4,977         2,409        13,139
                                                          --------      --------      --------
  END OF YEAR                                             $  5,540      $  4,977      $  2,409
                                                          ========      ========      ========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                       F-7
<PAGE>   126
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
NOTE 1 -- ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES
 
Hallwood Energy Partners, L.P. ("HEP" or the "Partnership") is a publicly traded
Delaware limited partnership engaged in the production, sale and transportation
of oil and gas and in the acquisition, exploration, development and operation of
oil and gas properties. The Partnership's properties are primarily located in
the Greater Permian Region of Texas and Southeast New Mexico, the Gulf Coast
Region of Louisiana and Texas, and the Rocky Mountain Region. The principal
objectives of HEP are to maintain or expand its reserve base and production and
to provide cash distributions to holders of its units representing limited
partner interests ("Units"). HEPGP Ltd. became the general partner of HEP on
November 26, 1996 after HEP's former general partner, Hallwood Energy
Corporation ("HEC"), merged into The Hallwood Group Incorporated ("Hallwood
Group"). HEPGP Ltd. is a limited partnership of which Hallwood Group is the
limited partner and Hallwood G.P., Inc. ("Hallwood G.P."), a wholly owned
subsidiary of Hallwood Group, is the general partner. HEP commenced operations
in August 1985 after completing an exchange offer in which HEP acquired oil and
gas properties and operations from HEC, 24 oil and gas limited partnerships of
which HEC was the general partner, and certain working interest owners that had
participated in wells with HEC and the limited partnerships.
 
The activities of HEP are conducted through HEP Operating Partners, L.P.
("HEPO") and EDP Operating, Ltd. ("EDPO"). HEP is the sole limited partner and
HEPGP Ltd. is the sole general partner of HEPO and EDPO. Solely for purposes of
simplicity herein, unless otherwise indicated, all references to HEP in
connection with the ownership, exploration, development or production of oil and
gas properties include HEPO and EDPO.
 
ACCOUNTING POLICIES
 
  CONSOLIDATION
 
HEP fully consolidates entities in which it owns a greater than 50% equity
interest and reflects a minority interest in the consolidated financial
statements. HEP accounts for its interest in 50% or less owned affiliated oil
and gas partnerships and limited liability companies using the proportionate
consolidation method of accounting. HEP's investment in approximately 46% of the
common stock of its affiliate, Hallwood Consolidated Resources Corporation
("HCRC"), is accounted for under the equity method.
 
The accompanying financial statements include the activities of HEP, its
subsidiaries, Hallwood Petroleum, Inc. ("HPI") and Hallwood Oil and Gas, Inc.
("Hallwood Oil") and majority owned affiliates, the May Limited Partnerships
1983-1, 1983-2, 1983-3, 1984-1, 1984-2, 1984-3 ("Mays").
 
  DERIVATIVES
 
HEP has entered into numerous financial contracts to hedge the price of its oil
and gas. The purpose of the hedges is to provide protection against price drops
and to provide a measure of stability in the volatile environment of oil and gas
spot pricing. The amounts received or paid upon settlement of these contracts
are recognized as oil or gas revenue at the time the hedged volumes are sold.
 
  GAS BALANCING
 
HEP uses the sales method for recording its gas balancing. Under this method,
HEP recognizes revenue on all of its sales of production, and any
over-production or under-production is recovered at a future date.
 
As of December 31, 1996, HEP had a net over-produced position of 166,000 mcf
($372,000 valued at average annual natural gas prices). The general partner
believes that this imbalance can be made up from or repaid by production on
existing wells or from wells which will be drilled as offsets to existing wells
and that this imbalance will not have a material effect on HEP's results of
operations, liquidity and capital resources. HEP's
 
                                       F-8
<PAGE>   127
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
oil and gas reserves as of December 31, 1996 have been decreased by 166,000 mcf
in order to reflect HEP's gas balancing position.
 
  ALLOCATIONS
 
Partnership costs and revenues are allocated to Unitholders and the General
Partner pursuant to the Partnership Agreement as set forth below.
 
<TABLE>
<CAPTION>
                                               Unitholders      General Partner
                                               -----------      ---------------
<S>                                            <C>              <C>
Property Costs and Revenues
  Initial acquisition costs --
       Acreage other than exploratory              100%                 0%
       Exploratory acreage                          98%                 2%
  Producing wells --
       Costs and revenues                           98%                 2%
  Development wells(1) --
       Costs through completion                    100%                 0%
       All other costs and revenues                 95%                 5%
  Exploratory wells(1) --
       Costs through completion                     90%                10%
       All other costs and revenues                 75%                25%
  All other costs and revenues                      98%                 2%
</TABLE>
 
- ---------------
 
(1) These percentages are for wells drilled under the EDPO partnership
    agreement. The majority of wells drilled under the HEPO partnership
    agreement share costs through completion in a ratio of 9.34% to the General
    Partner and 90.66% to the Unitholders and share all other costs and revenues
    in a ratio of 20.37% to the General Partner and 79.63% to the Unitholders.
 
  PROPERTY, PLANT AND EQUIPMENT
 
HEP follows the full cost method of accounting whereby all costs related to the
acquisition of oil and gas properties are capitalized in a single cost center
("full cost pool") and are amortized over the productive life of the underlying
proved reserves using the units of production method. Proceeds from property
sales are generally credited to the full cost pool.
 
Capitalized costs of oil and gas properties may not exceed an amount equal to
the present value, discounted at 10%, of estimated future net revenues from
proved oil and gas reserves plus the cost, or estimated fair market value, if
lower, of unproved properties. If capitalized costs exceed this ceiling, an
impairment is recognized. The standardized measure of discounted future net cash
flows is computed by applying current prices of oil and gas to estimated future
production of proved oil and gas reserves as of year end, less estimated future
expenditures to be incurred in developing and producing the proved reserves
assuming continuation of existing economic conditions.
 
HEP does not accrue costs for future site restoration, dismantlement and
abandonment costs related to proved oil and gas properties because the
Partnership estimates that such costs will be offset by the salvage value of the
equipment sold upon abandonment of such properties. The Partnership's estimates
are based upon its historical experience and upon review of current properties
and restoration obligations.
 
Unproved properties are withheld from the amortization base until such time as
they are either developed or abandoned. The properties are evaluated
periodically for impairment.
 
                                       F-9
<PAGE>   128
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
During 1996, HEP adopted Statement of Financial Accounting Standards No. 121,
"Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to
be Disposed Of" ("SFAS 121"). SFAS 121 provides the standards for accounting for
the impairment of various long-lived assets. Substantially all of HEP's
long-lived assets consist of oil and gas properties which are evaluated for
impairment as described above. Therefore, the adoption of SFAS 121 did not have
a material effect on the financial position or results of operations of HEP.
 
  DEFERRED LIABILITY
 
The deferred liability as of December 31, 1996 and 1995 consists primarily of
HEP's share of the unrecouped portion of a 1989 take-or-pay settlement, which is
recoupable in gas volumes.
 
  DISTRIBUTIONS
 
HEP paid a $.13 per Class A Unit and a $.25 per Class C Unit distribution on
February 14, 1997 to Unitholders of record on December 31, 1996. This amount and
the general partner distribution were accrued as of year end. At December 31,
1996 and 1995, distributions payable of $1,996,000 and $2,477,000, respectively
were included in accounts payable and accrued liabilities. HEP declared
distributions of $.52 per Class A Unit and $1.00 per Class C Unit for 1996 and
$.80 per Class A and Class B Unit for 1995.
 
  INCOME TAXES
 
No provision for federal income taxes is included in HEP's financial statements
because, as a partnership, it is not subject to federal income tax and the tax
effect of its activities accrues to the partners. In certain circumstances,
partnerships may be held to be associations taxable as corporations. The
Internal Revenue Service has issued regulations specifying circumstances under
current law when such a finding may be made, and management has obtained an
opinion of counsel based on those regulations that HEP is not an association
taxable as a corporation. A finding that HEP is an association taxable as a
corporation could have a material adverse effect on the financial position, cash
flows and results of operations of HEP.
 
As a result of the differences in the accounting treatment of certain items for
income tax purposes as opposed to financial reporting purposes, primarily
depreciation, depletion and amortization of oil and gas properties and the
recognition of intangible drilling costs as an expense or capital item, the
income tax basis of oil and gas properties differs from the basis used for
financial reporting purposes. At December 31, 1996 and 1995, the income tax
bases of the Partnership's oil and gas properties were approximately
$122,000,000 and $129,000,000, respectively.
 
  CASH AND CASH EQUIVALENTS
 
All highly liquid investments purchased with an original maturity of three
months or less are considered to be cash equivalents.
 
  COMPUTATION OF NET INCOME PER UNIT
 
Net income per Class A and Class B Unit is computed by dividing net income
attributable to the Class A and Class B limited partners' interest (net income
excluding income attributable to the general partner and Class C Units) by the
weighted average number of Class A Units, Class B Units and equivalent Class A
and Class B Units outstanding. The options to acquire Class A Units described in
Note 9 have been considered to be Unit equivalents since June 1, 1996 because
the market price of the Class A Units has exceeded the exercise price of the
options since that date. The number of equivalent Units was computed using the
treasury stock method which assumes that the increase in the number of Units is
reduced by the number of Units which could have been repurchased by the
Partnership with the proceeds from the exercise of the options
 
                                      F-10
<PAGE>   129
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
(which were assumed to have been made at the average market price of the Class A
Units during the reporting period). All Unit and per Unit information has been
restated to reflect the issuance of Class A Units in connection with a lawsuit
settlement further described in Note 12.
 
At December 31, 1996 and 1995, HEP owned approximately 46% and 40%,
respectively, of the outstanding common stock of HCRC, which owns approximately
19% of HEP's Class A Units; consequently, HEP had an interest in 899,305 and
784,095 of its own Units as of December 31, 1996 and 1995, respectively. These
Units are treated as treasury Units in the accompanying financial statements.
 
  USE OF ESTIMATES
 
The preparation of the financial statements for the Partnership in conformity
with generally accepted accounting principles requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure of contingent assets and liabilities at the date of
the financial statements and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from these estimates.
 
  SIGNIFICANT CUSTOMERS
 
Although the Partnership sells the majority of its oil and gas production to a
few purchasers, there are numerous other purchasers in the area in which HEP
sells its production; therefore, the loss of its significant customers would not
adversely affect HEP's operations. For the years ended December 31, 1996, 1995
and 1994, purchases by the following companies exceeded 10% of the total oil and
gas revenues of the Partnership:
 
<TABLE>
<CAPTION>
                                                    1996           1995           1994
                                                    -----          -----          -----
<S>                                                 <C>            <C>            <C>
  Conoco Inc.                                        28%            30%            23%
  Marathon Petroleum Company                         11%            14%            12%
</TABLE>
 
  ENVIRONMENTAL CONCERNS
 
HEP is continually taking actions it believes are necessary in its operations to
ensure conformity with applicable federal, state and local environmental
regulations. As of December 31, 1996, HEP has not been fined or cited for any
environmental violations which would have a material adverse effect upon capital
expenditures, earnings or the competitive position of HEP in the oil and gas
industry.
 
  RECLASSIFICATIONS
 
Certain reclassifications have been made to prior years' amounts to conform to
the classifications used in the current year.
 
                                      F-11
<PAGE>   130
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 2 -- OIL AND GAS PROPERTIES
 
The following table summarizes certain cost information related to HEP's oil and
gas activities:
 
<TABLE>
<CAPTION>
                                                For the Years Ended December 31,
                                            -----------------------------------------
                                             1996             1995             1994
                                            -------          -------          -------
                                                         (In thousands)
<S>                                         <C>              <C>              <C>
  Property acquisition costs:
     Proved                                 $ 2,321          $ 2,727          $ 3,724
     Unproved                                   560              793              183
  Development costs                           9,587           11,880            4,995
  Exploration costs                             831            2,368            4,983
                                            -------          -------          -------
            Total                           $13,299          $17,768          $13,885
                                            =======          =======          =======
</TABLE>
 
Depreciation, depletion, amortization and impairment expense related to proved
oil and gas properties per equivalent barrel of production for the years ended
December 31, 1996, 1995 and 1994, was $4.35, $7.21 and $5.79, respectively.
 
At December 31, unproved properties consisted of the following:
 
<TABLE>
<CAPTION>
                                                         1996           1995
                                                        ------          ----
                                                           (In thousands)
<S>                                                     <C>             <C>
Texas                                                   $1,062          $227
South Louisiana                                             11            86
Utah                                                                     137
Other                                                      171           234
                                                        ------          ----
                                                        $1,244          $684
                                                        ======          ====
</TABLE>
 
NOTE 3 -- PRINCIPAL ACQUISITIONS AND SALES
 
1996
- -----
 
On July 1, 1996, HEP and HCRC completed a transaction involving the acquisition
from Fuel Resources Development Co., a wholly owned subsidiary of Public Service
Company of Colorado, and other interest owners of their interests in 38 coal bed
methane wells located in La Plata County, Colorado and Rio Arriba County, New
Mexico. Thirty-four of the wells, estimated to have reserves of 53 Bcf, were
assigned to 44 Canyon LLC ("44 Canyon"), a special purpose entity owned by a
large east coast financial institution. The wells qualify for tax credits under
Section 29 of the Internal Revenue Code. HPI manages and operates the properties
on behalf of 44 Canyon. The $28.4 million purchase price was funded by 44 Canyon
through the sale of a volumetric production payment to an affiliate of Enron
Capital & Trade Resources Corp., a subsidiary of Enron Corp., the sale of a
subordinated production payment and certain other property interests for $3.45
million to an affiliate of HEP and HCRC, and additional cash contributed by the
owners of 44 Canyon. The affiliate of HEP and HCRC which purchased the
subordinated production payment and other property interests is owned equally by
HEP and HCRC. The interests in the four wells in Rio Arriba County were acquired
directly by HEP and HCRC.
 
1995
- -----
 
During 1995, HEP had no individually significant property acquisitions or sales.
 
                                      F-12
<PAGE>   131
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
1994
- -----
 
During the second quarter of 1994, HEP and HCRC formed a limited partnership
with a third party for the purpose of producing natural gas qualified for the
Section 29 tax credit under the Internal Revenue Code. A limited liability
company owned by HEP and HCRC is the general partner of the partnership. In
1994, HEP and HCRC sold a term working interest in certain wells in San Juan
County, New Mexico to the limited partnership. In November 1996, HEP and HCRC
sold to the limited partnership their 80% reversionary interest in the
properties owned by the limited partnership. As consideration for the sale, HEP
and HCRC received a production payment, an increase in incentive payments and a
90% springing reversionary interest in the properties.
 
In the 1994 transaction, HEP and HCRC received a cash payment totaling
$3,400,000. HEP recorded its $1,870,000 share of the cash payment received as a
credit to oil and gas properties in the accompanying financial statements. As a
result of the 1994 and 1996 transactions, HEP and HCRC receive 97% of the cash
flow from production from the wells sold until 22.3 Bcf are produced from the
wells (from November 1, 1996) and 80% of the cash flow until 31 Bcf are
produced. HEP and HCRC also receive quarterly cash incentive payments equal to
34% of the Section 29 tax credit generated from the production from the wells
until 10.3 Bcf are produced from the wells (from November 1, 1996), and 55%
thereafter. HEP and HCRC share in all proceeds 55% and 45%, respectively.
 
NOTE 4 -- DERIVATIVES
 
HEP has entered into numerous financial contracts to hedge the price of its oil
and gas. HEP does not use these hedges for trading purposes, but rather for the
purpose of providing a protection against price drops and to provide a measure
of stability in the volatile environment of oil and gas spot pricing. The
amounts received or paid upon settlement of these contracts is recognized as oil
or gas revenue at the time the hedged volumes are sold.
 
The financial contracts used by HEP to hedge the price of its oil and gas
production are swaps, collars and participating hedges. Under the swap
contracts, HEP sells its oil and gas production at spot market prices and
receives or makes payments based on the differential between the contract price
and a floating price which is based on spot market indices.
 
The following table provides a summary of HEP's financial contracts:
 
<TABLE>
<CAPTION>
                                                 Oil
                            ---------------------------------------------
                            Quantity of Production
          Period                    Hedged           Contract Floor Price
          ------            ----------------------   --------------------
                                    (Bbl)                 (Per Bbl)
<S>                         <C>                      <C>
1994                               361,000                  $17.93
1995                               380,000                   17.41
1996                               300,000                   18.33
1997                               346,000                   17.78
1998                               103,000                   15.38
1999                                16,000                   15.88
</TABLE>
 
Certain of HEP's financial contracts for oil are participating hedges whereby
HEP will receive the contract price if the posted futures price is lower than
the contract price, and will receive the contract price plus between 25% and 75%
of the difference between the contract price and the posted futures price if the
posted futures price is greater than the contract price. Certain other of HEP's
financial contracts for oil are collar agreements whereby HEP will receive the
contract price if the spot price is lower than the contract price, the
 
                                      F-13
<PAGE>   132
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
cap price if the spot price is higher than the cap price, and the spot price if
that price is between the contract price and the cap price. The cap prices range
from $17.50 to $19.35.
 
<TABLE>
<CAPTION>
                                            Gas
                       ---------------------------------------------
                       Quantity of Production
       Period                  Hedged           Contract Floor Price
       ------          ----------------------   --------------------
                               (Mcf)                 (Per Mcf)
<S>                    <C>                      <C>
 1994                       6,461,000                  $ 1.88
 1995                       6,439,000                    1.94
 1996                       5,479,000                    1.94
 1997                       5,386,000                    1.97
 1998                       4,235,000                    2.02
 1999                       1,860,000                    1.86
 2000                       1,244,000                    2.01
</TABLE>
 
Certain of HEP's financial contracts for gas are collar agreements whereby HEP
will receive the contract price if the spot price is lower than the contract
price, the cap price if the spot price is higher than the cap price, and the
spot price if that price is between the contract price and the cap price. The
cap prices range from $2.78 to $2.93.
 
In the event of nonperformance by the counterparties to the financial contracts,
HEP is exposed to credit loss, but has no off-balance sheet risk of accounting
loss. The Partnership anticipates that the counterparties will be able to
satisfy their obligations under the contracts because the counterparties consist
of well-established banking and financial institutions which have been in
operation for many years. Certain of HEP's hedges are secured by the lien on
HEP's oil and gas properties which also secures HEP's Credit Facilities
described in Note 6.
 
NOTE 5 -- INVESTMENT IN AFFILIATED CORPORATION
 
HEP accounts for its approximate 46% interest in HCRC using the equity method of
accounting. The following presents summarized financial information for HCRC at
December 31, 1996, 1995 and 1994:
 
<TABLE>
<CAPTION>
                               1996           1995           1994
                              -------        -------        -------
                                         (In thousands)
<S>                           <C>            <C>            <C>
Current assets                $10,802        $ 8,312        $ 7,076
Noncurrent assets              67,616         65,627         55,049
Current liabilities            10,849         15,514          6,646
Noncurrent liabilities         24,558         21,790         11,890
Revenue                        34,445         25,484         20,644
Net income (loss)               8,160         (4,670)        (2,974)
</TABLE>
 
No other individual entity in which HEP owns an interest comprises in excess of
10% of the revenues, net income or assets of HEP.
 
HCRC repurchased approximately 99,000 and 26,000 shares of its common stock in
odd lot repurchase offers which were completed January 26, 1996 and May 3, 1996,
respectively. HCRC resold 12,965 of these shares to HEP at the price paid by
HCRC for such shares. As a result of these transactions, HEP's ownership in HCRC
increased from 40% to 46% at the end of May 1996.
 
                                      F-14
<PAGE>   133
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
The following amounts represent HEP's share of the property related costs and
reserve quantities and values of its equity investee HCRC (in thousands):
 
CAPITALIZED COSTS RELATING TO OIL AND GAS ACTIVITIES:
 
<TABLE>
<CAPTION>
                                                    As of December 31,
                                             --------------------------------
                                               1996        1995        1994
                                             --------    --------    --------
<S>                                          <C>         <C>         <C>
Unproved properties                          $    573    $    230    $  1,052
Proved properties                             113,085      94,925      89,284
Accumulated depreciation, depletion,
  amortization and property impairment        (89,175)    (74,168)    (68,587)
                                             --------    --------    --------
Net property                                 $ 24,482    $ 20,987    $ 21,749
                                             ========    ========    ========
</TABLE>
 
COSTS INCURRED IN OIL AND GAS ACTIVITIES:
 
<TABLE>
<CAPTION>
                                            For the Years Ended December 31,
                                           ----------------------------------
                                            1996          1995          1994
                                           ------        ------        ------
<S>                                        <C>           <C>           <C>
Acquisition costs                          $1,008        $4,168        $1,531
Development costs                           3,670         2,124         1,531
Exploration costs                             382           845           825
                                           ------        ------        ------
          Total                            $5,060        $7,137        $3,887
                                           ======        ======        ======
</TABLE>
 
RESULTS OF OPERATIONS FOR OIL AND GAS ACTIVITIES:
 
<TABLE>
<CAPTION>
                                          For the Years Ended December 31,
                                        -------------------------------------
                                         1996           1995           1994
                                        -------        -------        -------
<S>                                     <C>            <C>            <C>
Oil and gas revenue                     $11,690        $ 7,825        $ 6,522
Production operating expense             (3,790)        (2,894)        (3,008)
Depreciation, depletion,
  amortization
  and property impairment expense        (3,257)        (2,792)        (3,695)
Income tax benefit (expense)                 23           (813)            73
                                        -------        -------        -------
          Net income (loss) from
            oil and gas
            activities                  $ 4,666        $ 1,326        $  (108)
                                        =======        =======        =======
</TABLE>
 
PROVED OIL AND GAS RESERVE QUANTITIES:
 
<TABLE>
<CAPTION>
                                                   Gas                   Oil
                                                  ------                -----
                                                   Mcf                   Bbl
                                                          (unaudited)
<S>                                               <C>                   <C>
Balance, December 31, 1996                        22,786                2,680
                                                  ======                =====
Balance, December 31, 1995                        15,782                2,482
                                                  ======                =====
Balance, December 31, 1994                        14,548                1,771
                                                  ======                =====
</TABLE>
 
                                      F-15
<PAGE>   134
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS:
 
<TABLE>
<CAPTION>
                                     (unaudited)
<S>                                  <C>
December 31, 1996                      $47,701
                                       =======
December 31, 1995                      $25,532
                                       =======
December 31, 1994                      $16,466
                                       =======
</TABLE>
 
NOTE 6 -- DEBT
 
HEP's long-term debt at December 31, 1996 and 1995 consisted of the following:
 
<TABLE>
<CAPTION>
                                1996       1995
                               -------    -------
                                 (In thousands)
<S>                            <C>        <C>
Note Purchase Agreement        $ 8,571    $12,857
Credit Agreement                26,700     24,700
Other                                          87
                               -------    -------
Total                           35,271     37,644
Less current maturities         (5,810)       (87)
                               -------    -------
Long-term debt                 $29,461    $37,557
                               =======    =======
</TABLE>
 
During the first quarter of 1995, HEP and its lenders amended HEP's Amended and
Restated Credit Agreement ("Credit Agreement") to extend the term date of its
line of credit to May 31, 1997. Under the Credit Agreement and an Amended and
Restated Note Purchase Agreement ("Note Purchase Agreement") (collectively
referred to as the "Credit Facilities"), HEP has a borrowing base of
$48,000,000. HEP had amounts outstanding at December 31, 1996 of $26,700,000
under the Credit Agreement and $8,571,000 under the Note Purchase Agreement.
HEP's borrowing base is further reduced by an outstanding contract settlement
obligation of $2,512,000 (See Note 7); therefore, its unused borrowing base
totaled $10,217,000 at February 28, 1997.
 
Borrowings under the Note Purchase Agreement bear interest at an annual rate of
11.85%, which is payable quarterly. Annual principal payments of $4,286,000
began April 30, 1992, and the debt is required to be paid in full on April 30,
1998. HEP intends to fund the payment due in April 1997 through additional
borrowings under the Credit Agreement; thus, no portion of HEP's Note Purchase
Agreement is classified as current as of December 31, 1996.
 
Borrowings against the Credit Agreement bear interest at the lower of the
Certificate of Deposit rate plus 1.875%, prime plus  1/2% or the Euro-Dollar
rate plus 1.75%. At December 31, 1996 the applicable interest rate was 7.4%.
Interest is payable monthly, and 16 quarterly principal payments of $1,937,000,
as adjusted for the anticipated borrowings to fund the Note Purchase Agreement
payment due in 1997, commence May 31, 1997. HEP intends to extend the maturity
date of its Credit Agreement prior to the commencement of the amortization
period.
 
The borrowing base for the Credit Facilities is redetermined semiannually in
March and September of each year. The Credit Facilities are secured by a first
lien on approximately 80% of HEP's oil and gas properties as determined by the
lenders. Additionally, aggregate distributions paid by HEP in any 12 month
period are limited to 50% of cash flow from operations before working capital
changes plus distributions received from affiliates.
 
                                      F-16
<PAGE>   135
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
HEP entered into contracts to hedge its interest rate payments on $10,000,000 of
its debt through the end of 1996, $15,000,000 for each of 1997 and 1998 and
$10,000,000 for each of 1999 and 2000. HEP does not use the hedges for trading
purposes, but rather for the purpose of providing a measure of predictability
for a portion of HEP's interest payments under its debt agreement which has a
floating interest rate. In general, it is HEP's goal to hedge 50% of the
principal amount of its debt for the next two years and 25% for each year of the
remaining term of the debt. HEP has entered into four hedges, of which one is an
interest rate collar pursuant to which it pays a floor rate of 7.55% and a
ceiling rate of 9.85%, and the others are interest rate swaps with fixed rates
ranging from 5.75% to 6.57%. The amounts received or paid upon settlement of
these transactions are recognized as interest expense at the time the interest
payments are due.
 
At December 31, 1996, HEP's debt maturity schedule is as follows:
 
<TABLE>
<CAPTION>
                         (IN THOUSANDS)
<S>                      <C>
 
1997                         $ 5,810
1998                          12,032
1999                           7,746
2000                           7,746
2001                           1,937
                             -------
Total                        $35,271
                             =======
</TABLE>
 
NOTE 7 -- CONTRACT SETTLEMENT OBLIGATION
 
In the first quarter of 1989, HEP settled a take-or-pay contract claim on its
Bethany-Longstreet field. In accordance with the settlement, HEP received
$7,623,000 in cash. This amount was recoupable in cash or gas volumes from April
1992 through March 1996, with a cash balloon payment due during the first
quarter of 1998. A liability has been recorded equal to the present value of
this amount discounted at 10.68%, HEP's estimated borrowing cost at the time of
settlement. HEP also repaid $1,629,000 which represented suspended payments to
the pipeline for previous years in equal monthly installments of $33,937 which
began April 1992 and continued through March 1996. This amount was previously
recorded as an offset to the full cost pool at the time the contract was
initially abrogated by the pipeline. As payment of this obligation was made it
was charged to the full cost pool.
 
At December 31, 1996, the long-term contract settlement balance consists of a
payment of $2,767,000 due in March 1998, net of unaccreted discount of $255,000.
 
NOTE 8 -- PARTNERS' CAPITAL
 
HEP Units that trade on the American Stock Exchange under the symbol "HEP" are
referred to as "Class A Units," and Units that trade under the symbol "HEPC" are
referred to as "Class C Units."
 
CLASS B SUBORDINATED UNITS
 
The Class B Units have equal liquidation rights and identical tax allocation
rights and provisions to the Class A Units. However, the Class B Units have the
following subordinated distribution provisions:
 
          1. Distribution rights equal to Class A Units while the Class A Units
             receive distributions of $.20 or more per Class A Unit per calendar
             quarter.
 
          2. No current distribution right should Class A Units receive
             distributions less than $.20 per Class A Unit for any calendar
             quarter.
 
          3. An accumulated distribution deficit account is maintained for the
             benefit of the Class B Units for any distributions suspended under
             2 above. The amount in the deficit account is payable in whole
 
                                      F-17
<PAGE>   136
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
          or in part to the Class B Unitholders in any quarter in which
          distributions equal to or greater than $.20 per Class A Unit are made
          on Class A Units.
 
The Class B Units may be converted into Class A Units on a 1:1 ratio at the
option of the holder or holders thereof. Upon conversion, any amount remaining
unpaid in the accumulated distribution deficit account relating to Class B Units
converted is waived.
 
The Class B Units vote as a separate class on all matters required or otherwise
brought for a vote of the Unitholders of HEP.
 
CLASS C UNITS
 
The Class C Units were issued on January 19, 1996 to Class A Unitholders in the
ratio of one Class C Unit for every 15 Class A Units outstanding. In connection
with the issuance of the Class C Units, HEP transferred $5,146,000 of partners
capital from the Class A Unitholders to the Class C Unitholders based on the
initial trading price of the Class C Units.
 
The Class C Units have a distribution preference of $1.00 per year, payable
quarterly, commencing in the first quarter of 1996. HEP may not declare or make
any cash distributions on the Class A or Class B Units unless all accrued and
unpaid distributions on the Class C Units have been paid.
 
Class C Units vote as a separate class on all matters submitted to the
unitholders of HEP for a vote.
 
RIGHTS PLAN
 
On February 6, 1995 the board of directors of HEC approved the adoption of a
rights plan designed to protect Unitholders in the event of a takeover action
that would otherwise deny them the full value of their investment.
 
Under the terms of the rights plan, one right was distributed for each Class A
Unit of HEP to holders of record at the close of business on February 17, 1995.
The rights trade with the Class A Units. The rights will become exercisable only
in the event, with certain exceptions, that an acquiring party accumulates 15%
or more of HEP's Class A Units, or if a party announces an offer to acquire 30%
or more of HEP. The rights will expire on February 6, 2005. In addition, upon
the occurrence of certain events, holders of the rights will be entitled to
purchase, for $24, either HEP Class A Units or shares in an "acquiring entity,"
with a market value at that time of $48.
 
HEP will generally be entitled to redeem the rights at one cent per right at any
time until the tenth day following the acquisition of a 15% position in its
Units.
 
NOTE 9 -- EMPLOYEE INCENTIVE PLANS
 
Every year beginning in 1992, the Board of Directors of the general partner has
adopted an incentive plan. Each year the Board of Directors determines the
percentage of HEP's interest in the cash flow from certain wells drilled,
recompleted or enhanced during the year allocated to the incentive plan for that
year. The specified percentage was 2.4% for 1996, 1.4% for domestic wells for
1995 and 1% for domestic wells for 1994. In 1994 and 1995, HEP also had an
international incentive plan and the percentage interest in cash flow for that
plan was 3%. Beginning in 1996, the domestic and international plans were
combined. The specified percentage of cash flow is then allocated among certain
key employees who are participants in the Plan for that year. Each award under
the plan (with regard to domestic properties) represents the right to receive
for five years a portion of the specified share of the cash award, and the
participants are each paid a share of an amount equal to a specified percentage
(80% for 1995 and 1996 and 40% for 1994) of the remaining net present value of
the qualifying wells, and the award for that year terminates. The expenses
attributable to the
 
                                      F-18
<PAGE>   137
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
plans were $148,000 in 1996, $119,000 in 1995 and $88,000 in 1994 and are
included in general and administrative expense in the accompanying financial
statements.
 
On January 31, 1995, the board of directors of HEC approved the adoption of the
Unit Option Plan ("Option Plan") to be used for the motivation and retention of
directors, employees and consultants performing services for HEP. The plan
authorizes the issuance of options to purchase 425,000 Class A Units. Grants of
the total options authorized were made on January 31, 1995, vesting one-third at
that time, an additional one-third on January 31, 1996 and the remaining
one-third on January 31, 1997. The exercise price of the options is $5.75, which
was the closing price of the Class A Units on January 30, 1995.
 
A summary of options granted under the Option Plan as of December 31, 1996 and
1995 and the changes therein during the years then ended on those dates is
presented below:
 
<TABLE>
<CAPTION>
                                         1996                             1995
                                 ---------------------            ---------------------
                                              Exercise                         Exercise
                                  Units        Price               Units        Price
                                 -------      --------            -------      --------
<S>                              <C>          <C>                 <C>          <C>
Outstanding at beginning of
  year                           425,000       $5.75
Granted                                                           425,000       $5.75
                                 -------       -----              -------       -----
Outstanding at end of year       425,000       $5.75              425,000       $5.75
                                 =======       =====              =======       =====
Options exercisable at year end  283,330                          141,665
                                 =======                          =======
</TABLE>
 
The Partnership has adopted the disclosure-only provisions of Statement of
Financial Accounting Standards No. 123, "Accounting for Stock-Based
Compensation" ("SFAS 123"). Accordingly, no compensation cost has been
recognized for the Option Plan. Had compensation expense for the Option Plan
been determined based on the fair value at the grant date for the options
awarded in 1995 consistent with the provisions of SFAS 123, HEP's net income
(loss) and net income (loss) per Unit would have been reduced to the pro forma
amounts indicated below:
 
<TABLE>
<CAPTION>
                                                      1996          1995
                                                   -----------   -----------
<S>                                 <C>            <C>           <C>
Net income (loss):                  as reported    $15,726,000   $(9,031,000)
                                    pro forma       15,544,000    (9,432,000)
Net income (loss)
  per Class A and B Unit:           as reported    $      1.34   $     (1.07)
                                    pro forma             1.32         (1.11)
</TABLE>
 
The fair value of the Unit options for disclosure purposes was estimated on the
date of the grant using the Binomial Option Pricing Model with the following
assumptions:
 
<TABLE>
<S>                                                       <C>
Expected dividend yield                                   6%
Expected price volatility                                 28%
Risk-free interest rate                                   7.6%
Expected life of options                                  10 years
</TABLE>
 
NOTE 10 -- RELATED PARTY TRANSACTIONS
 
HPI manages and operates certain oil and gas properties on behalf of independent
joint interest owners, HEP and its affiliates. In such capacity, HPI pays all
costs and expenses of operations and distributes all revenues associated with
such properties. HPI had payables to affiliates of HEP of $159,000 at December
31, 1996 and receivables from affiliates of HEP of $2,808,000 at December 31,
1995, which represented revenues net of operating costs and expenses. The
intercompany balances are settled monthly.
 
                                      F-19
<PAGE>   138
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
HPI is reimbursed by HEP for costs and expenses which includes office rent,
salaries and associated overhead for personnel of HPI engaged in the acquisition
and evaluation of oil and gas properties (technical expenditures which are
capitalized as costs of oil and gas properties) and lease operating and general
and administrative expenses necessary to conduct the business of HEP
(nontechnical expenditures which are expensed as general and administrative or
production operating expenses). Reimbursements during 1996, 1995 and 1994 were
as follows:
 
<TABLE>
<CAPTION>
                                                            1996      1995      1994
                                                           ------    ------    ------
                                                                 (In thousands)
<S>                                                        <C>       <C>       <C>
Technical                                                  $1,249    $1,100    $  747
Nontechnical                                                1,110     1,321     1,502
</TABLE>
 
Included in the nontechnical allocation attributable to HEP's direct interest
for 1996, 1995 and 1994 is approximately $152,000, $156,000 and $159,000,
respectively, of consulting fees under a consulting agreement with Hallwood
Group. Also included in the nontechnical allocation is $309,000, $369,000 and
$363,000 in 1996, 1995 and 1994, respectively, representing costs incurred by
Hallwood Group and its affiliates on behalf of the Partnership.
 
During the third quarter of 1994, HPI entered into a consulting agreement with
its Chairman of the Board to provide advisory services regarding the activities
of its affiliates. The amount of consulting fees allocated to the Partnership
under this agreement is $125,000 in both 1996 and 1995 and $62,500 in 1994.
 
NOTE 11 -- STATEMENT OF CASH FLOWS
 
Cash paid during 1996, 1995 and 1994 for interest totaled $3,492,000, $3,356,000
and $3,185,000, respectively.
 
NOTE 12 -- LITIGATION SETTLEMENTS
 
In September 1995, the court order approving the settlement in the class action
lawsuit styled In re. Hallwood Energy Partners, L.P. Securities Litigation
became final. As part of the settlement, on September 28, 1995, HEP paid
$2,870,000 in cash (which was recorded as an expense in the December 31, 1994
financial statements as the estimated cost associated with the litigation) and
issued 1,158,696 Class A Units with a market value of $5,330,000 to a nominee of
the class. HCRC subsequently exercised an option to purchase these Units from
the nominee for $5,330,000 in cash. Other defendants contributed an additional
$900,000 in cash to the settlement. The net proceeds of the settlement were
distributed to a class consisting of former owners of limited partner interests
in Energy Development Partners, Ltd. ("EDP") who exchanged their units in that
entity for Units of HEP pursuant to the merger of EDP and HEP on May 9, 1990
(the "Transaction").
 
Upon issuance, these Class A Units were treated, for financial statement
purposes, as additional Class A Units issued in connection with the Transaction,
which was accounted for as a reorganization of entities under common control, in
a manner similar to a pooling of interest, and have been reflected as
outstanding Class A Units since May 9, 1990, the date of the Transaction. As a
result of the settlement, the number of Units outstanding and the net income
(loss) per Class A Unit and Class B Unit have been retroactively restated for
all periods subsequent to the Transaction date.
 
NOTE 13 -- LEGAL PROCEEDINGS
 
In June 1996, HEP and the other parties to the lawsuits styled Lamson Petroleum
Corporation v. Hallwood Petroleum, Inc. et al. settled the lawsuits. The
plaintiffs in the lawsuits claimed they had valid leases covering streets and
roads in the units of the A. L. Boudreaux #1 well, G. S. Boudreaux #1 well, Paul
Castille #1 well, Evangeline Shrine Club #1 well and Duhon #1 well, which
represented approximately .4% to 2.3% of HEP's interest in these properties, and
they were entitled to a portion of the production from the wells dating from
 
                                      F-20
<PAGE>   139
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
February 1990. In the settlement, HEP and the plaintiffs agreed to cross-convey
interests in certain leases to one another, and HEP agreed to pay the plaintiffs
$728,000. HEP has not recognized revenue attributable to the contested leases
since January 1993. These revenues plus accrued interest, totaling $506,000, had
been placed in escrow pending the resolution of the lawsuits. The excess of the
cash paid over the escrowed amounts, is reflected as litigation settlement
expense in the accompanying financial statements. The cross-conveyance of the
interests in the leases resulted in a decrease in HEP's reserves of $374,000 in
future net revenues, discounted at 10%.
 
The Partnership is involved in other legal proceedings and claims which have
arisen in the ordinary course of its business and have not been finally
adjudicated. The Partnership believes that its liability, if any, as a result of
such proceedings and claims will not materially affect its financial condition,
cash flows or operations.
 
NOTE 14 -- COMMITMENTS
 
HPI leases office facilities under operating leases which expire in 1999. Rent
expense under these leases is allocated to HEP and its affiliates. Remaining
commitments under these leases mature as follows:
 
<TABLE>
<CAPTION>
Year Ending
December 31,                            Annual Rentals
- ------------                            --------------
                                        (in thousands)
<C>                                     <C>
    1997                                    $  632
    1998                                       632
    1999                                       316
                                            ------
                                            $1,580
                                            ======
</TABLE>
 
Rent expense allocated to HEP was $304,000, $299,000, and $291,000 for the years
ended December 31, 1996, 1995 and 1994, respectively.
 
NOTE 15 -- ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS
 
The following disclosure of the estimated fair value of financial instruments is
made in accordance with the requirements of SFAS No. 107, "Disclosures about
Fair Value of Financial Instruments." The estimated fair value amounts have been
determined by the Partnership, using available market information and
appropriate valuation methodologies. However, considerable judgment is
necessarily required in interpreting market data to develop the estimates of
fair value. Accordingly, the estimates presented herein are not necessarily
indicative of the amounts that the Partnership could realize in a current market
exchange. The use of different market assumptions and/or estimation
methodologies may have a material effect on the estimated fair value amounts.
 
<TABLE>
<CAPTION>
                                             December 31, 1996
                                       ------------------------------
                                       Carrying            Estimated
                                        Amount             Fair Value
                                       --------            ----------
                                               (In thousands)
<S>                                    <C>                 <C>
LIABILITIES:
     Interest rate hedge contracts     $   -0-              $   250
     Oil and gas hedge contracts           -0-               20,000
     Current portion of long-term
       debt                              5,810                5,810
     Long-term debt                     29,461               29,716
     Contract settlement                 2,512                2,524
</TABLE>
 
                                      F-21
<PAGE>   140
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
The estimated fair value of the interest rate hedge contracts is computed by
multiplying the difference between the year end interest rate and the contract
interest rate by the amounts under contract. This amount has been discounted
using an interest rate that could be available to the Partnership.
 
The estimated fair value of the oil and gas hedge contracts is determined by
multiplying the difference between year end oil and gas prices and the hedge
contract prices by the quantities under contract. This amount has been
discounted using an interest rate that could be available to the Partnership.
 
The current portion of long-term debt is carried in the accompanying balance
sheets at an amount which is a reasonable estimate of its fair value.
 
The estimated fair value of long-term debt and contract settlement is determined
using interest rates that could be available to the Partnership for similar
instruments with similar terms.
 
The fair value estimates presented herein are based on pertinent information
available to management as of December 31, 1996. Although management is not
aware of any factors that would significantly affect the estimated fair value
amounts, such amounts have not been comprehensively revalued for purposes of
these financial statements since that date, and current estimates of fair value
may differ significantly from the amounts presented herein.
 
                                      F-22
<PAGE>   141
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                  SUPPLEMENTAL OIL AND GAS RESERVE INFORMATION
                               DECEMBER 31, 1996
                                  (UNAUDITED)
 
The following reserve quantity and future net cash flow information for HEP
represents proved reserves which are located in the United States. The reserves
have been estimated by HPI's in-house engineers. Approximately 75% of these
reserves has been reviewed by independent petroleum engineers. The determination
of oil and gas reserves is based on estimates which are highly complex and
interpretive. The estimates are subject to continuing change as additional
information becomes available.
 
The standardized measure of discounted future net cash flows provides a
comparison of HEP's proved oil and gas reserves from year to year. No
consideration has been given to future income taxes for HEP as it is not a
taxpaying entity. Under the guidelines set forth by the Securities and Exchange
Commission (SEC), the calculation is performed using year end prices unless
contracts provide otherwise. At December 31, 1996, oil and gas prices averaged
$24.18 per Bbl of oil and $3.76 per mcf of gas for HEP, including its indirect
interests in affiliated partnerships and the Mays. Future production costs are
based on year end costs and include severance taxes. The present value of future
cash inflows is based on a 10% discount rate. The reserve calculations using
these December 31, 1996 prices result in 7.5 million Bbls of oil, and 88.5 Bcf
of natural gas and a standardized measure of $206,000,000. The Mays are included
on a consolidated basis, and 63,000 Bbls of oil and 1.7 Bcf of gas, representing
a discounted present value of $6,800,000 are attributable to the minority
ownership of these entities. This standardized measure is not necessarily
representative of the market value of HEP's properties. The portion of the
reserves attributable to the General Partner's interest totaled 300,000 Bbls of
oil and 6 Bcf of gas with a standardized measure of $16,000,000 at December 31,
1996.
 
HEP's standardized measure of future net cash flows has been decreased by
$20,000,000 at December 31, 1996 for the effects of its hedge contracts. This
amount represents the difference between year end oil and gas prices and the
hedge contract prices multiplied by the quantities subject to contract,
discounted at 10%.
 
                                      F-23
<PAGE>   142
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                               RESERVE QUANTITIES
                                 (IN THOUSANDS)
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                Gas           Oil
                                                              -------        -----
                                                                Mcf          Bbls
<S>                                                           <C>            <C>
PROVED RESERVES:
     Balance, December 31, 1993                                91,607        5,453
     Extensions and discoveries                                 5,985        1,052
     Revisions of previous estimates                            1,318        1,113
     Sales of reserves in place                                  (816)         (84)
     Purchase of reserves in place                                699          143
     Production                                               (13,208)        (939)
                                                              -------        -----
     Balance, December 31, 1994                                85,585        6,738
     Extensions and discoveries                                 5,997        1,902
     Revisions of previous estimates                            4,248          464
     Sales of reserves in place                                   (45)         (41)
     Purchase of reserves in place                                362           28
     Production                                               (13,035)        (993)
                                                              -------        -----
     Balance, December 31, 1995                                83,112        8,098
     Extensions and discoveries                                 1,683          484
     Revisions of previous estimates                           10,552          385
     Sales of reserves in place                                (3,369)        (481)
     Purchase of reserves in place                              9,350           17
     Production                                               (12,786)        (972)
                                                              -------        -----
     Balance, December 31, 1996                                88,542        7,531
                                                              =======        =====
PROVED DEVELOPED RESERVES:
     Balance, December 31, 1994                                79,699        6,166
                                                              =======        =====
     Balance, December 31, 1995                                77,378        7,444
                                                              =======        =====
     Balance, December 31, 1996                                85,848        7,056
                                                              =======        =====
</TABLE>
 
                                      F-24
<PAGE>   143
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
            STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS
                                 (IN THOUSANDS)
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                 December 31,
                                                  -------------------------------------------
                                                    1996             1995             1994
                                                  ---------        ---------        ---------
<S>                                               <C>              <C>              <C>
Future cash flows                                 $ 509,000        $ 317,000        $ 262,000
Future production and development costs            (175,000)        (130,000)        (109,000)
                                                  ---------        ---------        ---------
Future net cash flows before discount               334,000          187,000          153,000
10% discount to present value                      (128,000)         (63,000)         (49,000)
                                                  ---------        ---------        ---------
Standardized measure of discounted future net
  cash flows                                      $ 206,000        $ 124,000        $ 104,000
                                                  =========        =========        =========
</TABLE>
 
                                      F-25
<PAGE>   144
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                      CHANGES IN THE STANDARDIZED MEASURE
                      OF DISCOUNTED FUTURE NET CASH FLOWS
                                 (IN THOUSANDS)
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                       For the Years Ended December 31,
                                                 --------------------------------------------
                                                   1996              1995              1994
                                                 --------          --------          --------
<S>                                              <C>               <C>               <C>
Standardized measure of discounted future net
  cash flows at beginning of year                $124,000          $104,000          $121,000
Sales of oil and gas produced, net of
  production costs                                (35,915)          (29,712)          (29,319)
Net changes in prices and production costs         75,085            17,015           (19,175)
Extensions and discoveries, net of future
  production and development costs                  7,144            16,836            10,537
Changes in estimated future development costs      (7,492)          (11,868)           (5,614)
Development costs incurred                          9,195            11,880             4,995
Revisions of previous quantity estimates           20,032             6,817             6,852
Purchases of reserves in place                     14,721               513             1,334
Sales of reserves in place                         (9,742)             (281)           (1,131)
Accretion of discount                              12,400            10,400            12,100
Changes in production rates and other              (3,428)           (1,600)            2,421
                                                 --------          --------          --------
Standardized measure of discounted future net
  cash flows at end of year                      $206,000          $124,000          $104,000
                                                 ========          ========          ========
</TABLE>
 
                                      F-26
<PAGE>   145
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                           CONSOLIDATED BALANCE SHEET
                                  (UNAUDITED)
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                September
                                                                   30,
                                                                  1997
                                                              -------------
<S>                                                           <C>
CURRENT ASSETS
     Cash and cash equivalents                                  $   1,769
     Accounts receivable:
          Oil and gas revenues                                      7,429
          Trade                                                     4,812
          Due from affiliates                                         996
     Prepaid expenses and other current assets                      1,959
                                                                ---------
          Total                                                    16,965
                                                                ---------
PROPERTY, PLANT AND EQUIPMENT, at cost
     Oil and gas properties (full cost method):
       Proved mineral interests                                   620,049
       Unproved mineral interests -- domestic                       1,710
     Furniture, fixtures and other                                  3,498
                                                                ---------
          Total                                                   625,257
     Less accumulated depreciation, depletion,
       amortization and property impairment                      (532,758)
                                                                ---------
               Total                                               92,499
                                                                ---------
OTHER ASSETS
     Investment in common stock of HCRC                            15,084
     Deferred expenses and other assets                               102
                                                                ---------
          Total                                                    15,186
                                                                ---------
 
TOTAL ASSETS                                                    $ 124,650
                                                                =========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-27
<PAGE>   146
 
                         HALLWOOD ENERGY PARTNERS, L.P.
 
                           CONSOLIDATED BALANCE SHEET
                                  (UNAUDITED)
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                              September 30,
                                                                  1997
                                                              -------------
<S>                                                           <C>
CURRENT LIABILITIES
     Accounts payable and accrued liabilities                   $  16,767
     Net working capital deficit of affiliate                         383
     Current portion of contract settlement                         2,690
                                                                ---------
          Total                                                    19,840
                                                                ---------
NONCURRENT LIABILITIES
     Long-term debt                                                31,986
     Deferred liability                                             1,209
                                                                ---------
          Total                                                    33,195
                                                                ---------
 
          Total liabilities                                        53,035
                                                                ---------
MINORITY INTEREST IN AFFILIATES                                     3,174
                                                                ---------
PARTNERS' CAPITAL
     Class A Units - 9,977,254 Units issued, 9,077,949
       outstanding                                                 65,374
     Class B Subordinated Units - 143,773 Units issued
       and outstanding                                              1,379
     Class C Units - 664,063 Units issued and outstanding           5,146
     General Partner                                                3,521
     Treasury Units - 899,305 Units                                (6,979)
                                                                ---------
          Partners' capital - net                                  68,441
                                                                ---------
TOTAL LIABILITIES AND PARTNERS' CAPITAL                         $ 124,650
                                                                =========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-28
<PAGE>   147
 
                        HALLWOOD ENERGY PARTNERS, L. P.
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                                  (UNAUDITED)
                      (IN THOUSANDS EXCEPT PER UNIT DATA)
 
<TABLE>
<CAPTION>
                                                                 For the Nine
                                                                 Months Ended
                                                                September 30,
                                                              ------------------
                                                               1997       1996
                                                              -------    -------
<S>                                                           <C>        <C>
REVENUES:
  Oil revenue                                                 $11,157    $14,600
  Gas revenue                                                  19,073     21,322
  Pipeline, facilities and other                                2,072      2,039
  Interest                                                        328        331
                                                              -------    -------
                                                               32,630     38,292
                                                              -------    -------
EXPENSES:
  Production operating                                          8,207      8,379
  Facilities operating                                            560        551
  General and administrative                                    3,250      3,133
  Depreciation, depletion and amortization                      8,657     10,554
  Interest                                                      2,315      3,047
                                                              -------    -------
                                                               22,989     25,664
                                                              -------    -------
OTHER INCOME (EXPENSE):
  Equity in earnings of HCRC                                    1,384      1,227
  Minority interest in net income of affiliates                (1,341)    (2,092)
  Litigation settlement                                           240       (230)
                                                              -------    -------
                                                                  283     (1,095)
                                                              -------    -------
NET INCOME                                                      9,924     11,533
 
CLASS C UNIT DISTRIBUTIONS ($.75 PER UNIT)                        498        498
                                                              -------    -------
 
NET INCOME ATTRIBUTABLE TO GENERAL PARTNER,
  CLASS A AND CLASS B LIMITED PARTNERS                        $ 9,426    $11,035
                                                              =======    =======
 
ALLOCATION OF NET INCOME:
  General partner                                             $ 1,408    $ 1,923
                                                              =======    =======
  Class A and Class B limited partners                        $ 8,018    $ 9,112
                                                              =======    =======
  Per Class A Unit and Class B Unit                           $   .86    $   .99
                                                              =======    =======
  Weighted average Class A Units and Class B Units
     and equivalent Units outstanding                           9,348      9,246
                                                              =======    =======
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-29
<PAGE>   148
 
                        HALLWOOD ENERGY PARTNERS, L. P.
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                  (UNAUDITED)
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                               For the Nine Months
                                                               Ended September 30,
                                                              ----------------------
                                                                1997          1996
                                                              --------      --------
<S>                                                           <C>           <C>
OPERATING ACTIVITIES:
Net income                                                    $  9,924      $ 11,533
          Adjustments to reconcile net income to net cash
            provided by operating activities:
               Depreciation, depletion and amortization          8,657        10,554
               Depreciation charged to affiliates                  165           195
               Amortization of deferred loan costs and other
                 assets                                             61           122
               Noncash interest expense                            178           163
               Equity in earnings of HCRC                       (1,384)       (1,227)
               Minority interest in net income of affiliates     1,341         2,092
               Undistributed earnings of affiliates                 73          (558)
               Recoupment of take-or-pay liability                 (97)         (331)
          Changes in operating assets and liabilities
            provided (used) cash net
            of noncash activity:
               Oil and gas revenues receivable                   1,976          (146)
               Trade receivables                                  (305)       (1,243)
               Due from affiliates                                (996)        2,287
               Prepaid expenses and other current assets        (1,031)         (339)
               Accounts payable and accrued liabilities          1,488        (1,220)
               Due to affiliates                                (1,772)          861
                                                              --------      --------
                      Net cash provided by operating
                          activities                            18,278        22,748
                                                              --------      --------
INVESTING ACTIVITIES:
          Additions to property, plant and equipment            (2,499)       (2,667)
          Exploration and development costs incurred            (9,073)       (6,838)
          Proceeds from sales of property, plant and
            equipment                                               85         5,287
          Refinance of Spraberry investment                                   (4,715)
          Investment in affiliates                                 (76)         (517)
                                                              --------      --------
                      Net cash used in investing activities    (11,563)       (9,450)
                                                              --------      --------
FINANCING ACTIVITIES:
          Payments of long-term debt                            (5,285)       (8,373)
          Proceeds from long-term debt                           2,000         6,000
          Distributions paid                                    (5,583)       (6,180)
          Distributions paid by consolidated affiliates to
            minority interest                                   (1,508)       (1,778)
          Payment of contract settlement                                        (305)
          Syndication costs and capital contributions                            (12)
          Other financing activities                              (115)         (128)
                                                              --------      --------
                      Net cash used in financing activities    (10,486)      (10,776)
                                                              --------      --------
 
NET INCREASE (DECREASE) IN CASH AND CASH
  EQUIVALENTS                                                   (3,771)        2,522
 
CASH AND CASH EQUIVALENTS:
 
BEGINNING OF PERIOD                                              5,540         4,977
                                                              --------      --------
 
END OF PERIOD                                                 $  1,769      $  7,499
                                                              ========      ========
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
                                      F-30
<PAGE>   149
 
                        HALLWOOD ENERGY PARTNERS, L. P.
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  (UNAUDITED)
 
NOTE 1 -- GENERAL
 
Hallwood Energy Partners, L. P. ("HEP") is a publicly traded Delaware limited
partnership engaged in the development, acquisition and production of oil and
gas properties in the continental United States. HEP's objective is to provide
its partners with an attractive return through a combination of cash
distributions and capital appreciation. To achieve its objective, HEP utilizes
operating cash flow, first, to reinvest in operations to maintain its reserve
base and production; second, to make stable cash distributions to Unitholders;
and third, to grow HEP's reserve base over time. Future growth will be driven by
a combination of development of existing projects, exploration for new reserves
and select acquisitions. The general partner of HEP is HEPGP Ltd.
 
The activities of HEP are conducted through HEP Operating Partners, L.P.
("HEPO") and EDP Operating, Ltd. ("EDPO"). HEP is the sole limited partner and
HEPGP Ltd. is the sole general partner of HEPO and of EDPO. Solely for purposes
of simplicity herein, unless otherwise indicated, all references to HEP in
connection with the ownership, exploration, development or production of oil and
gas properties include HEPO and EDPO.
 
The interim financial data are unaudited; however, in the opinion of the general
partner, the interim data include all adjustments, consisting only of normal
recurring adjustments, necessary for a fair presentation of the results for the
interim periods. These financial statements should be read in conjunction with
the financial statements and accompanying notes included elsewhere in this
Prospectus.
 
ACCOUNTING POLICIES
 
  CONSOLIDATION
 
HEP fully consolidates entities in which it owns a greater than 50% equity
interest and reflects a minority interest in the consolidated financial
statements. HEP accounts for its interest in 50% or less owned affiliated oil
and gas partnerships and limited liability companies using the proportionate
consolidation method of accounting. HEP's investment in the common stock of its
affiliate, Hallwood Consolidated Resources Corporation ("HCRC"), is accounted
for under the equity method.
 
The accompanying financial statements include the activities of HEP, its
subsidiaries Hallwood Petroleum, Inc. ("HPI") and Hallwood Oil and Gas, Inc.
("Hallwood Oil"), and majority owned affiliates, the May Limited Partnerships
1983-1, 1983-2, 1983-3, 1984-1, 1984-2, 1984-3 ("Mays").
 
COMPUTATION OF NET INCOME PER UNIT
 
Net income per Class A and Class B Unit is computed by dividing net income
attributable to the Class A and Class B limited partners' interest (net income
excluding income attributable to the general partner and Class C Units) by the
weighted average number of Class A Units, Class B Units and equivalent Class A
and Class B Units outstanding. The options to acquire Class A Units, which were
issued during 1995, are considered to be Unit equivalents since January 1, 1997
because the market price of the Class A Units has exceeded the exercise price of
the options since that date. The number of equivalent Units was computed using
the treasury stock method which assumes that the increase in the number of Units
is reduced by the number of Units which could have been repurchased by the
Partnership with the proceeds from the exercise of the options (which were
assumed to have been made at the average market price of the Class A Units
during the reporting period).
 
HEP owns approximately 46% of the outstanding common stock of HCRC, while HCRC
owns approximately 19% of HEP's Units. Consequently, HEP had an interest in
899,305 of its own Units at September 30, 1997. These Units are treated as
treasury units in the accompanying financial statements.
 
                                      F-31
<PAGE>   150
 
                        HALLWOOD ENERGY PARTNERS, L. P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
During February 1997, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standards No. 128, Earnings per Share ("SFAS 128"). SFAS
128 establishes standards for computing and presenting earnings per share (EPS),
and supersedes APB Opinion No. 15 and its related interpretations. It replaces
the presentation of primary EPS with a presentation of basic EPS, which excludes
dilution, and requires dual presentation of basic and diluted EPS for all
entities with complex capital structures. Diluted EPS is computed similarly to
fully diluted EPS pursuant to Opinion No. 15. SFAS 128 is effective for periods
ending after December 15, 1997, including interim periods, and will require
restatement of all prior period EPS data presented; earlier application is not
permitted.
 
A comparison of EPS shown in the accompanying financial statements with the pro
forma amounts that would have been determined in accordance with SFAS 128 is as
follows:
 
<TABLE>
<CAPTION>
                                     For the Nine Months Ended September 30,
                                   --------------------------------------------
                                           1997                    1996
                                           ----                    ----
<S>                                <C>     <C>                     <C>     <C>
Primary (Basic):
  As reported                              $.86                    $.99
  Pro forma                                $.87                    $.99
Fully Diluted
  (Diluted):
  As reported                              $.86                    $.99
  Pro forma                                $.86                    $.99
</TABLE>
 
  Reclassifications
 
Certain reclassifications have been made to the prior period amounts to conform
to the classifications used in the current period.
 
NOTE 2 -- DEBT
 
During the second quarter of 1997, HEP and its lenders amended and restated
HEP's Second Amended and Restated Credit Agreement (as amended, the "Credit
Agreement") to extend the term date of its line of credit to May 31, 1999. Under
the Credit Agreement and an Amended and Restated Note Purchase Agreement ("Note
Purchase Agreement") (collectively referred to as the "Credit Facilities"),
HEP's borrowing base was $46,000,000 at October 31, 1997. HEP had amounts
outstanding at September 30, 1997 of $27,700,000 under the Credit Agreement and
$4,286,000 under the Note Purchase Agreement. HEP's borrowing base is further
reduced by an outstanding contract settlement obligation of $2,690,000 and
borrowings of $2,000,000 made subsequent to September 30, 1997; therefore, its
unused borrowing base totaled $11,324,000 at October 31, 1997.
 
Borrowings under the Note Purchase Agreement bear interest at an annual rate of
11.85%, which is payable quarterly. Annual principal payments of $4,286,000
began April 30, 1992, and the debt is required to be paid in full on April 30,
1998. HEP intends to fund the payment due in April 1998 through additional
borrowings under the Credit Agreement; thus, no portion of HEP's Note Purchase
Agreement is classified as current as of September 30, 1997.
 
Borrowings against the Credit Agreement bear interest at the lower of the
Certificate of Deposit rate plus from 1.375% to 1.875%, prime plus  1/2% or the
Euro-Dollar rate plus from 1.25% to 1.75%. The applicable interest rate was 7.2%
at September 30, 1997. Interest is payable monthly, and quarterly principal
payments of $2,124,000 as adjusted for the $2,000,000 of borrowings made
subsequent to September 30, 1997 as well as the anticipated borrowings to fund
the Note Purchase Agreement payment due in April 1998, commence May 31, 1999.
 
                                      F-32
<PAGE>   151
 
                        HALLWOOD ENERGY PARTNERS, L. P.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
The borrowing base for the Credit Facilities is redetermined semiannually. The
Credit Facilities are secured by a first lien on approximately 80% in value of
HEP's oil and gas properties. Additionally, aggregate distributions paid by HEP
in any 12 month period are limited to 50% of cash flow from operations before
working capital changes plus 50% of distributions received from affiliates, if
the principal amount of debt of HEP is 50% or more of the borrowing base.
Aggregate distributions paid by HEP are limited to 65% of cash flow from
operations, plus 65% of distributions received from affiliates if the principal
amount of debt is less than 50% of the borrowing base.
 
HEP entered into contracts to hedge its interest rate payments on $15,000,000 of
its debt for each of 1997 and 1998 and $10,000,000 for each of 1999 and 2000.
HEP does not use the hedges for trading purposes, but rather for the purpose of
providing a measure of predictability for a portion of HEP's interest payments
under its debt agreement, which has a floating interest rate. In general, it is
HEP's goal to hedge 50% of the principal amount of its debt for the next two
years and 25% for each year of the remaining term of the debt. HEP has entered
into four hedges, one of which is an interest rate collar pursuant to which it
pays a floor rate of 7.55% and a ceiling rate of 9.85%, and the others are
interest rate swaps with fixed rates ranging from 5.75% to 6.57%. The amounts
received or paid upon settlement of these transactions are recognized as
interest expense at the time the interest payments are due.
 
NOTE 3 -- STATEMENTS OF CASH FLOWS
 
Cash paid for interest during the nine months ended September 30, 1997 and 1996
was $2,077,000 and $2,761,000, respectively.
 
NOTE 4 -- SUBSEQUENT EVENT
 
In October 1997 the Partnership filed with the Securities and Exchange
Commission a registration statement covering the sale by the Partnership of
newly issued Class C Units. The Partnership intends to use the net proceeds from
the offering to accelerate the drilling of its project inventory and, in the
interim, to repay a portion of its outstanding indebtedness under its Credit
Agreement. A registration statement relating to the Class C Units has been filed
with the Securities and Exchange Commission but has not yet become effective.
The Class C Units may not be sold nor may offers to buy be accepted prior to the
time the registration statement becomes effective. This information shall not
constitute an offer to sell or the solicitation of an offer to buy nor shall
there be any sale of the Class C Units in any State in which such offer,
solicitation or sale would be unlawful prior to registration or qualification
under the securities laws of any such State.
 
                                      F-33
<PAGE>   152
 
                          INDEPENDENT AUDITOR'S REPORT
 
TO THE PARTNERS OF HEPGP LTD.
 
We have audited the accompanying balance sheet of HEPGP Ltd. as of December 31,
1996. This financial statement is the responsibility of the Partnership's
management. Our responsibility is to express an opinion on this financial
statement based on our audit.
 
We conducted our audit in accordance with generally accepted auditing standards.
Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether the balance sheet is free of material misstatement. An
audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the balance sheet. An audit also includes assessing the
accounting principles used and significant estimates made by management, as well
as evaluating the overall balance sheet presentation. We believe that our audit
of the balance sheet provides a reasonable basis for our opinion.
 
In our opinion, such balance sheet presents fairly, in all material respects,
the financial position of the Partnership at December 31, 1996 in conformity
with generally accepted accounting principles.
 
DELOITTE & TOUCHE LLP
 
Denver, Colorado
January 12, 1998
 
                                      F-34
<PAGE>   153
 
                                   HEPGP LTD.
 
                                 BALANCE SHEETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                              September 30,    December 31,
                                                                  1997             1996
                                                              -------------    ------------
                                                               (Unaudited)
<S>                                                           <C>              <C>
CURRENT ASSETS
  Cash and cash equivalents                                     $     31         $    182
  Due from affiliates                                                417            1,056
  Accounts receivable                                                 76              109
  Current assets of affiliate                                        954            1,128
                                                                --------         --------
          Total                                                    1,478            2,475
                                                                --------         --------
PROPERTY, PLANT AND EQUIPMENT
  Oil and gas properties (full cost method), net of
     accumulated depletion, depreciation and amortization          4,056            4,321
                                                                --------         --------
OTHER ASSETS
  Note receivable from affiliate                                   2,000            2,000
  Noncurrent assets of affiliate                                     924              849
                                                                --------         --------
          Total                                                    2,924            2,849
                                                                --------         --------
TOTAL ASSETS                                                    $  8,458         $  9,645
                                                                ========         ========
CURRENT LIABILITIES
  Accounts payable and accrued liabilities                      $     62         $    181
  Current portion of long-term debt                                  610            1,668
  Current liabilities of affiliate                                 1,121            1,146
                                                                --------         --------
          Total                                                    1,793            2,995
                                                                --------         --------
NONCURRENT LIABILITIES
  Long-term debt                                                                      693
  Long-term liabilities of affiliate                               2,047            2,085
                                                                --------         --------
          Total                                                    2,047            2,778
                                                                --------         --------
COMMITMENTS AND CONTINGENCIES
PARTNERS' CAPITAL
  General Partner                                                     46               39
  Limited Partner                                                  4,572            3,833
                                                                --------         --------
          Total                                                    4,618            3,872
                                                                --------         --------
 
TOTAL LIABILITIES AND PARTNERS' CAPITAL                         $  8,458         $  9,645
                                                                ========         ========
</TABLE>
 
       The accompanying notes are an integral part of the Balance Sheets.
 
                                      F-35
<PAGE>   154
 
                                   HEPGP LTD.
  
                            NOTES TO BALANCE SHEETS
                     (INFORMATION AS OF SEPTEMBER 30, 1997
                                 IS UNAUDITED)
 
NOTE 1 -- ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES
 
HEPGP Ltd. ("HEPGP" or the "Partnership") is a Colorado limited partnership,
formed on November 26, 1996, that is engaged in the development, acquisition and
production of oil and gas properties in the continental United States. HEPGP is
the general partner of Hallwood Energy Partners, L.P. ("HEP"), a publicly traded
Delaware limited partnership. HEPGP conducts substantially all of its operations
through HEP. Hallwood G.P., Inc. is the general partner of HEPGP and The
Hallwood Group Incorporated ("Hallwood Group") is the sole limited partner of
HEPGP.
 
SIGNIFICANT ACCOUNTING POLICIES:
 
  INVESTMENT IN HEP
 
HEPGP's general partner interest in HEP entitles it to a share of net revenues
derived from HEP's properties ranging from 2% to 25%. HEPGP accounts for its
ownership interest in HEP using the proportionate consolidation method of
accounting whereby HEPGP records its proportionate share of each of HEP's
current assets, current liabilities, noncurrent assets, noncurrent liabilities
and fixed assets in its balance sheets.
 
  CASH AND CASH EQUIVALENTS
 
All highly liquid investments purchased with an original maturity of three
months or less are considered to be cash equivalents.
 
  OIL AND GAS PROPERTIES
 
HEPGP follows the full cost method of accounting whereby all costs related to
the acquisition of oil and gas properties are capitalized in a single cost
center ("full cost pool") and are amortized over the productive life of the
underlying proved reserves using the units of production method. Proceeds from
property sales are generally credited to the full cost pool.
 
Capitalized costs of oil and gas properties may not exceed an amount equal to
the present value, discounted at 10%, of estimated future net revenues from
proved oil and gas reserves plus the cost, or estimated fair market value, if
lower, of unproved properties. Should capitalized costs exceed this ceiling, an
impairment is recognized. The present value of estimated future net revenues is
computed by applying current prices of oil and gas to estimated future
production of proved oil and gas reserves as of year end, less estimated future
expenditures to be incurred in developing and producing the proved reserves
assuming continuation of existing economic conditions.
 
HEPGP does not accrue costs for future site restoration, dismantlement and
abandonment costs related to proved oil and gas properties because HEPGP
estimates that such costs will be offset by the salvage value of the equipment
sold upon abandonment of such properties. HEPGP's estimates are based upon its
historical experience and upon a review of current properties and restoration
obligations.
 
During 1996, HEPGP adopted Statement of Financial Accounting Standards No. 121,
"Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to
be Disposed Of" ("SFAS 121"). SFAS 121 provides the standards for accounting for
the impairment of various long-lived assets. Substantially all of HEPGP's
long-lived assets consist of oil and gas properties which are evaluated for
impairment as described above. Therefore, the adoption of SFAS 121 did not have
a material effect on the financial position of HEPGP.
 
                                      F-36
<PAGE>   155
 
                                   HEPGP LTD.
 
                     NOTES TO BALANCE SHEETS -- (CONTINUED)
                     (INFORMATION AS OF SEPTEMBER 30, 1997
                                 IS UNAUDITED)
 
  USE OF ESTIMATES
 
The preparation of the balance sheet for HEPGP in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the balance
sheet. Actual results could differ from these estimates.
 
  GAS BALANCING
 
HEPGP uses the sales method for recording its gas balancing. Under this method,
HEPGP recognizes revenue on all of its sales of production, and any over
production or under production is recovered at a future date.
 
As of December 31, 1996, the imbalance net to HEPGP's interest is not material.
HEPGP believes that current imbalances can be made up with production from
existing wells or from wells which will be drilled as offsets to current
producing wells and the imbalance will not have a material effect on HEPGP's
results of operations, liquidity and capital resources.
 
  ENVIRONMENTAL CONCERNS
 
HEPGP is continually taking actions it believes are necessary in its operations
to ensure conformity with applicable federal, state and local environmental
regulations. As of December 31, 1996, HEPGP has not been fined or cited for any
environmental violations which would have a material adverse effect on the
Partnership.
 
NOTE 2 -- RELATED PARTY TRANSACTIONS
 
During the third quarter of 1997 and the fourth quarter 1996, HEP declared
general partner distributions of $508,000 and $541,000, respectively. These
amounts have been accrued by HEPGP and are included in due from affiliates at
September 30, 1997 and December 31, 1996.
 
Hallwood Petroleum, Inc. ("HPI") manages and operates certain oil and gas
properties on behalf of independent joint interest owners, HEPGP and its
affiliates. In such capacity, HPI pays all costs and expenses of operations and
distributes all revenues associated with such properties. HEPGP has payables of
$264,000 and $26,000 to HPI included in due from affiliates at September 30,
1997 and December 31, 1996, respectively, which represents net operating
expenses in excess of net revenues. This balance is settled monthly.
 
Also included in "due from affiliates" at December 31, 1996 are amounts advanced
to Hallwood Group of $616,000 for operating purposes. This balance is expected
to be settled within approximately six months.
 
The note receivable from the affiliate is comprised of a $2,000,000 promissory
note due from Hallwood Group. The note bears interest at a bank's prime interest
rate plus 1% (9.25% at December 31, 1996) and has a maturity date of May 31,
1998. HEPGP intends to extend the maturity date to May 31, 1999; therefore,
there is no current portion of long-term debt at September 30, 1997. Principal
and interest payments may be made in whole or in part from time to time without
premium or penalty prior to the maturity date.
 
                                      F-37
<PAGE>   156
 
                                   HEPGP LTD.
 
                     NOTES TO BALANCE SHEETS -- (CONTINUED)
                     (INFORMATION AS OF SEPTEMBER 30, 1997
                                 IS UNAUDITED)
 
NOTE 3 -- DEBT
 
During December 1996, HEPGP entered into a $2,500,000 term loan agreement. The
loan bears interest at the bank's prime interest rate plus 1% (9.25% at December
31, 1996) and monthly principal payments of $139,000 commenced December 31,
1996. The loan matures on April 30, 1998 and is collateralized by certain of
HEPGP's direct oil and gas property interests.
 
As of December 31, 1996, principal payments due on HEPGP's debt were as follows
(in thousands):
 
<TABLE>
<S>                                                           <C>
1997                                                          $ 1,668
 
1998                                                              693
                                                              -------
 
                                                                2,361
 
Less current maturities                                         1,668
                                                              -------
 
Long-term debt                                                $   693
                                                              =======
</TABLE>
 
NOTE 4 -- SUBSEQUENT EVENT
 
During November 1997, HEPGP amended and restated its $2,500,000 term loan
agreement. The amendment increased the principal amount of the loan to
$4,000,000. The new loan bears interest at the LIBOR Rate plus 3.5% (9.1875% at
January 12, 1998), and monthly principal payments of $133,000 commenced December
15, 1997. The loan matures May 15, 2000, and is collateralized by certain of
HEPGP's direct oil and gas property interests.
 
                                      F-38
<PAGE>   157
 
                                   HEPGP LTD.
 
                  SUPPLEMENTAL OIL AND GAS RESERVE INFORMATION
                               DECEMBER 31, 1996
                                  (UNAUDITED)
 
The following reserve quantity and future net cash flow information for HEPGP
represents proved reserves that are located in the United States. The reserves
have been estimated by in-house engineers. A majority of these reserves has been
reviewed by independent petroleum engineers. The determination of oil and gas
reserves is based on estimates which are highly complex and interpretive. The
estimates are subject to continuing changes as additional information becomes
available.
 
The standardized measure of discounted future net cash flows excludes any
consideration of future income taxes for HEPGP as it is not a tax-paying entity.
Under the guidelines set forth by the Securities and Exchange Commission (the
"SEC"), the calculation is performed using year end prices. At December 31,
1996, oil and gas prices averaged $24.13 per bbl of oil and $4.00 per mcf of gas
for HEPGP. Future production costs are based on year end costs and include
severance taxes. The present value of future cash inflows is based on a 10%
discount rate. The reserve calculations using these December 31, 1996 prices
result in 486,000 Bbls of oil, and 6.8 billion cubic feet of gas and a
standardized measure of $19,000,000. The standardized measure is not necessarily
representative of the market value of HEPGP's properties.
 
HEPGP's standardized measure of future net cash flows has been decreased by
$404,000 at December 31, 1996 for the effects of HEP's hedge contracts. This
amount represents the difference between year end oil and gas prices and the
hedge contract prices multiplied by the quantities subject to contract,
discounted at 10%.
 
                                      F-39
<PAGE>   158
 
                                   HEPGP LTD.
 
                               RESERVE QUANTITIES
                                 (IN THOUSANDS)
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                               Gas          Oil
                                                              (Mcf)        (Bbls)
                                                              -----        ------
<S>                                                           <C>          <C>
PROVED RESERVES:
 
  Balance December 31, 1996                                   6,790         486
                                                              =====         ===
 
PROVED DEVELOPED RESERVES:
 
  Balance December 31, 1996                                   6,676         468
                                                              =====         ===
</TABLE>
 
                                      F-40
<PAGE>   159
 
                                   HEPGP LTD.
 
            STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS
                               DECEMBER 31, 1996
                                 (IN THOUSANDS)
                                  (UNAUDITED)
 
<TABLE>
<S>                                                           <C>
Future cash inflows.........................................  $  39,300
Future production and development costs.....................     (9,600)
                                                              ---------
Future net cash flows before discount.......................     29,700
10% discount to present value...............................    (10,700)
                                                              ---------
Standardized measure of discounted future net cash flows....  $  19,000
                                                              =========
</TABLE>
 
     A statement of changes in the standardized measure of discounted future net
cash flows is not included as the activity from November 26, 1996 (HEPGP's
formation date) through December 31, 1996 was not significant.
 
                                      F-41
<PAGE>   160
 
======================================================
 
   
     UNTIL MARCH 8, 1998 (25 DAYS AFTER THE DATE OF THIS PROSPECTUS), ALL
DEALERS EFFECTING TRANSACTIONS IN THE REGISTERED SECURITIES, WHETHER OR NOT
PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS.
THIS IS IN ADDITION TO THE OBLIGATIONS OF DEALERS TO DELIVER A PROSPECTUS WHEN
ACTING AS UNDERWRITERS AND WITH RESPECT TO THEIR UNSOLD ALLOTMENTS OR
SUBSCRIPTIONS.
    
                             ---------------------
 
                             ---------------------
 
     NO DEALER, SALESPERSON OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATION NOT MADE BY THIS PROSPECTUS AND, IF
GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS
HAVING BEEN AUTHORIZED BY THE COMPANY OR THE UNDERWRITERS. THIS PROSPECTUS DOES
NOT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY OF THE
SECURITIES OFFERED HEREBY BY ANYONE IN ANY JURISDICTION WHERE SUCH AN OFFER OR
SOLICITATION IS NOT AUTHORIZED, OR IN WHICH THE PERSON MAKING SUCH OFFER OF
SOLICITATION IS NOT QUALIFIED TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE
DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY
CIRCUMSTANCES, CREATE AN IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE
AFFAIRS OF THE COMPANY OR THAT INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY
TIME SUBSEQUENT TO THE DATE OF THIS PROSPECTUS.
 
======================================================
======================================================
   
                                   1,800,000
    
                                 CLASS C UNITS
                              REPRESENTING LIMITED
                               PARTNER INTERESTS
                                HALLWOOD ENERGY
                                 PARTNERS, L.P.
                           -------------------------
                                   PROSPECTUS
                           -------------------------
                            EVEREN SECURITIES, INC.
 
                               WHEAT FIRST UNION
 
                         LADENBURG THALMANN & CO. INC.
======================================================
<PAGE>   161
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
     The following table sets forth the estimated expenses and costs (other than
underwriting discounts and commissions) expected to be incurred in connection
with the issuance and distribution of the securities registered hereby:
 
<TABLE>
<S>                                                           <C>
Securities and Exchange Commission registration fee.........  $   9,700
NASD filing fee.............................................  $   3,600
American Stock Exchange listing fee.........................  $  17,500
Printing and engraving costs................................  $*130,000
Legal fees and expenses.....................................  $*150,000
Accounting fees and expenses................................  $*100,000
Blue Sky fees and expenses..................................  $ * 5,000
Registrar and Transfer Agent's fees.........................  $ * 5,000
Miscellaneous...............................................  $ * 4,200
                                                              ---------
          Total.............................................  $*425,000
                                                              =========
</TABLE>
 
- ---------------
 
* Estimated
 
     The Partnership will pay all of such expenses to be incurred in connection
with the issuance and distribution of the securities registered hereby.
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS; LIMITATION OF LIABILITY FOR
         MONETARY DAMAGES
 
     (a) The Partnership Agreement of HEP provides that the Partnership will
indemnify the General Partner, its affiliates and their directors, officers,
employees and agents against any and all losses, claims, damages, liabilities,
joint and several, expenses (including reasonable legal fees and expenses),
judgments, fines, settlements and other amounts arising from any and all claims,
costs, demands, actions, suits or proceedings, civil, criminal, administrative
or investigative, in which the General Partner or such other persons may be
involved or threatened to be involved, if (i) in the case of civil actions the
General Partner or such persons acted in good faith and in a manner it
reasonably believed to be in, or not opposed to, the best interests of the
Partnership and the Operating Partnerships and the General Partner's or such
other person's conduct did not constitute gross negligence or willful or wanton
misconduct and in the case of criminal actions the General Partner or such other
person had no reasonable cause to believe the conduct was unlawful or (ii) the
General Partner or such other person has been successful in defending any such
action or proceeding.
 
     (b) The Partnership Agreement also provides that General Partner, its
affiliates and directors will not be liable for monetary damages to the
Partnership, the limited partners or assignees for errors of judgment or for any
acts or omissions of the General Partner and such other persons who acted in
good faith.
 
                                      II-1
<PAGE>   162
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
     (a) Exhibits
 
<TABLE>
<C>                      <S>
         *1.1            - Form of Underwriting Agreement to be entered into by
                           Hallwood Energy Partners, L.P., EVEREN Securities, Inc.,
                           Wheat First Securities, Inc. and Ladenburg Thalmann & Co.
                           Inc.
          4.1            - Third Amended and Restated Agreement of Limited
                           Partnership of Hallwood Energy Partners, L.P.(1)
          4.2            - Unit Purchase Rights Agreement dated as of February 6,
                           1995 between HEP and The First National Bank of Boston.(2)
          4.3            - First Amendment to the Third Amended and Restated
                           Agreement of Limited Partnership of Hallwood Energy
                           Partners, L.P.(3)
          4.4            - Amendment to the Third Amended and Restated Agreement of
                           Limited Partnership of Hallwood Energy Partners, L.P.(4)
         *5.1            - Opinion of Jenkens & Gilchrist, a Professional Corporation
         *8.1            - Opinion of Jenkens & Gilchrist, a Professional
                           Corporation, with respect to federal income tax matters
        *12.1            - Statement regarding computation of ratios
        *23.1            - Consent of Deloitte & Touche LLP.
        *23.2            - Consent of Williamson Petroleum Consultants, Inc.
        *23.3            - Consent of Jenkens & Gilchrist, a Professional Corporation
                           (included in Exhibits 5.1 and 8.1)
        *99.1            - Letter of Williamson Petroleum Consultants, Inc.
                           dated
</TABLE>
 
- ---------------
 
 *  Previously filed.
 
(1) Incorporated by reference to Prospectus/Proxy Statement dated February 14,
    1990 as supplemented March 22, 1990, March 30, 1990 and April 5, 1990, of
    Hallwood Energy Partners, L. P., filed as part of Registration Statement No.
    33-33452.
 
(2) Incorporated by reference to the same Exhibit number filed with the
    Registrant's Form 8-A for Limited Partner Unit Purchase Rights filed with
    the SEC on February 8, 1995.
 
(3) Incorporated by reference to the same exhibit number filed with the
    Registrant's Annual Report on Form 10-K for the fiscal year ended December
    31, 1995.
 
(4) Incorporated by reference to the same exhibit number filed with the
    Registrant's Annual Report on Form 10-K for the fiscal year ended December
    31, 1996.
 
     (b) Financial Statement Schedules
 
     Not applicable.
 
ITEM 17. UNDERTAKINGS
 
     (a) The undersigned Registrant hereby undertakes to provide to the
Underwriter at the closing specified in the Underwriting Agreement certificates
in such denominations and registered in such names as required by the
Underwriter to permit prompt delivery to each purchaser.
 
     (b) The undersigned registrant hereby undertakes to deliver or cause to be
delivered with the prospectus, to each person to whom the prospectus is sent or
given, the latest annual report to security holders that is incorporated by
reference in the prospectus and furnished pursuant to and meeting the
requirements of
 
                                      II-2
<PAGE>   163
 
Rule 14a-3 or Rule 14c-3 under the Securities Exchange Act of 1934; and, where
interim financial information required to be presented by Article 3 of
Regulation S-X are not set forth in the prospectus, to deliver, or cause to be
delivered to each person to whom the prospectus is sent or given, the latest
quarterly report that is specifically incorporated by reference in the
prospectus to provide such interim financial information.
 
     (c) Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than payment by the Registrant of expenses
incurred or paid by a director, officer, or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.
 
     (d) The undersigned Registrant hereby undertakes that:
 
          (1) For purposes of determining any liability under the Securities
     Act, the information omitted from the form of prospectus filed as part of
     this Registration Statement in reliance upon Rule 430A and contained in a
     form of prospectus filed by the Registrant pursuant to Rule 424(b)(1) or
     (4), or 497(h) under the Securities Act shall be deemed to be part of this
     Registration Statement as of the time it was declared effective.
 
          (2) For the purpose of determining any liability under the Securities
     Act of 1933, each post-effective amendment that contains a form of
     prospectus shall be deemed to be a new registration statement relating to
     the securities offered therein, and the offering of such securities at that
     time shall be deemed to be the initial bona fide offering thereof.
 
     (e) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.
 
                                      II-3
<PAGE>   164
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Post-Effective
Amendment No. 1 to Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Dallas, State of Texas,
on the 11th day of February 1998.
    
 
                                          HALLWOOD ENERGY PARTNERS, L.P.
 
                                          BY: HEPGP LTD.
                                            GENERAL PARTNER
 
                                          BY: HALLWOOD G.P., INC.
                                            GENERAL PARTNER
 
                                          By: /s/ William L. Guzzetti*
 
                                            ------------------------------------
                                                    William L. Guzzetti
                                                         President
 
   
     Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment No. 1 to Registration Statement has been signed by the
following persons in the capacities and on the dates indicated.
    
 
   
<TABLE>
<CAPTION>
                      SIGNATURE                                      TITLE                    DATE
                      ---------                                      -----                    ----
<S>                                                      <C>                            <C>
 
/s/ Anthony J. Gumbiner*                                 Chairman of the Board and
- -----------------------------------------------------      Director (Principal
Anthony J. Gumbiner                                        Executive Officer)           February 11, 1998
 
                                                         Director
- -----------------------------------------------------
Brian M. Troup                                                                          February 11, 1998
 
/s/ William L. Guzzetti*                                 Director
- -----------------------------------------------------
William L. Guzzetti                                                                     February 11, 1998
 
/s/ Hans-Peter Holinger*                                 Director
- -----------------------------------------------------
Hans-Peter Holinger                                                                     February 11, 1998
 
/s/ Rex A. Sebastian*                                    Director
- -----------------------------------------------------
Rex A. Sebastian                                                                        February 11, 1998
 
/s/ Rex A. Sebastian                                     Director
- -----------------------------------------------------
Rex A. Sebastian                                                                        February 11, 1998
 
/s/ Nathan C. Collins*                                   Director
- -----------------------------------------------------
Nathan C. Collins                                                                       February 11, 1998
 
/s/ Robert S. Pfeiffer*                                  Principal Financial and
- -----------------------------------------------------      Accounting Officer
Robert S. Pfeiffer                                                                      February 11, 1998
</TABLE>
    
 
- ---------------
 
* By Cathleen M. Osborn, Attorney-in-Fact
 
                                      II-4


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