3DX TECHNOLOGIES INC
S-3/A, 1998-10-30
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>


   
    As filed with the Securities and Exchange Commission on October 30, 1998
                                                   Registration No. 333-63119
    
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
   
                                 AMENDMENT NO. 1
                                       to
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933
    

                              3DX TECHNOLOGIES INC.
               (Exact name of registrant as specified in charter)

             Delaware                                   76-0386601
  (State or other jurisdiction of                    (I.R.S. employer
   incorporation or organization)                 identification number)

                          12012 Wickchester, Suite 250
                              Houston, Texas 77079
                                 (281) 579-3398
                   (Address, including zip code, and telephone
                         number, including area code, of
                        registrant's principal executive
                                    offices)

                                 Ronald P. Nowak
                      President and Chief Executive Officer
                          12012 Wickchester, Suite 250
                              Houston, Texas 77079
                                 (281) 579-3398
           (Name and address, including zip code and telephone number,
                   including area code, of agent for service)

                                 with a copy to:
                             Jay R. Schifferli, Esq.
                            Kelley Drye & Warren LLP
                               Two Stamford Plaza
                              281 Tresser Boulevard
                           Stamford, Connecticut 06901
                                 (203) 324-1400

     Approximate  date of commencement of proposed sale of the securities to the
public: From time to time after this Registration Statement becomes effective.
     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, check the following box. |X|
     If this form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please 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.  |_|
<TABLE>
<CAPTION>
   
                                                  CALCULATION OF REGISTRATION FEE
- ------------------------------------ ----------------------- --------------------------- ------------------------ -----------------

          Title of shares                 Amount to be       Proposed maximum offering      Proposed maximum         Amount of
         to be registered                  registered            price per share(1)        aggregate offering     registration fee
                                                                                                price(1)
- ------------------------------------ ----------------------- --------------------------- ------------------------ -----------------
<S>                                  <C>                   <C>                          <C>                        <C>

Common Stock, par value $.01 per        4,515,114             $.375                       $1,693,167.75               $470.70
share
- ------------------------------------ ----------------------- --------------------------- ------------------------ -----------------
</TABLE>

         (1) Estimated  solely for the purpose of  calculating  the
registration  fee pursuant to Rule 457.  $516.87 was previously paid.
         (2) Based on the average of the high and the low prices of the Common
Stock on the Nasdaq  National  Market on October 28, 1998.
    
         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 or until this  Registration  Statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.

================================================================================


<PAGE>




INFORMATION   CONTAINED  HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMENDMENT.   A
REGISTRATION  STATEMENT  RELATING  TO THESE  SECURITIES  HAS BEEN FILED WITH THE
SECURITIES  AND EXCHANGE  COMMISSION.  THESE  SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
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.



<PAGE>
   
                  Subject to completion, dated October 30, 1998
    
PROSPECTUS
   
                                4,515,114 Shares
    
                              3DX TECHNOLOGIES INC.
                          Common Stock ($.01 par value)
   
     This Prospectus relates to the offer and sale of 4,515,114 shares (the
"Shares") of common stock,  par value $.01 per share  ("Common  Stock"),  of 3DX
Technologies  Inc.  ("3DX"  or  the  "Company")  by  or  on  behalf  of  certain
stockholders of the Company ("Selling Stockholders").
    
         The Shares may be offered  and sold from time to time by one or more of
the Selling  Stockholders,  however, no Selling Stockholder is required to offer
or sell any of his or its Shares. The Selling  Stockholders  anticipate that, if
and when offered and sold,  the Shares will be offered and sold in  transactions
(which may include block transactions) effected on the Nasdaq National Market at
the then prevailing market prices. The Selling  Stockholders  reserve the right,
however,  to offer and sell the Shares on any other national securities exchange
on which the  Common  Stock is or may become  listed or in the  over-the-counter
market,  in  each  case  at  then  prevailing  market  prices,  or in  privately
negotiated  transactions as a price then to be negotiated.  All offers and sales
made on the Nasdaq National Market or any other national  securities exchange or
in the  over-the-counter  market will be made through or to licensed brokers and
dealers.  All proceeds  from the sale of the Shares will be paid directly to the
Selling  Stockholders  and will not be  deposited  in an escrow,  trust or other
similar  arrangement.  The Company will not receive any of the proceeds from the
sales  by  the  Selling  Stockholders.   No  discounts,   commissions  or  other
compensation will be allowed or paid by the Selling  Stockholders or the Company
in  connection  with the offer and sale of the  Shares,  except  that  usual and
customary brokers' commissions may be paid by the Selling Stockholders. Upon any
sale of the Shares offered hereby,  the Selling  Stockholders and  participating
agents,  brokers or  dealers  may be deemed to be  underwriters  as that term is
defined in the Securities Act of 1933, as amended (the  "Securities  Act"),  and
commissions or discounts or any profit realized on the resale of such securities
purchased  by them may be deemed to be  underwriting  commissions  or  discounts
under the Securities Act.

         The Company has agreed to indemnify the Selling  Stockholders,  and the
Selling  Stockholders  have  agreed to  indemnify  the  Company,  its  officers,
directors, employees, agents and controlling persons against certain liabilities
arising  in  connection  with this  offering,  including  liabilities  under the
Securities  Act. The Company will pay all expenses  incurred in connection  with
this offering,  excluding  commissions charged by any broker or dealer acting on
behalf  of a Selling  Stockholder.  The  legal,  accounting  and other  fees and
expenses to be paid by the  Company  related to the offer and sale of the Shares
contemplated hereby are estimated to be $55,000.
   
         The Common  Stock is quoted on the  Nasdaq  National  Market  under the
symbol  "TDXT".  On October 28, 1998, the last reported sale price of the Common
Stock on the Nasdaq National Market was $.375.
    


THE SECURITIES OFFERED HEREBY INVOLVE A HIGH DEGREE OF RISK.  SEE "RISK FACTORS"
BEGINNING ON PAGE 4.


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.

   
                The date of this Prospectus is October __, 1998.
    

<PAGE>


         No person is authorized in connection  with the offering made hereby to
give  any  information  or to make  any  representation  not  contained  in this
Prospectus.  If given or made, such  information or  representation  must not be
relied upon as having been  authorized  by the Company.  Neither the delivery of
this   Prospectus  nor  any  offer  or  sale  made  hereunder  shall  under  any
circumstances  create any implication  that the information  contained herein is
correct as of any time  subsequent to the date hereof.  This Prospectus does not
constitute an offer to sell or a solicitation  of an offer to buy any securities
in any  jurisdiction  to any person to whom it would be unlawful to make such an
offer or solicitation in such jurisdiction.

                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Exchange Act and in accordance  therewith  files reports,  proxy  statements and
other   information   with  the   Securities   and  Exchange   Commission   (the
"Commission").  Such reports,  proxy  statements  and other  information  can be
inspected  and  copied at the  public  reference  facilities  maintained  by the
Commission at Judiciary  Plaza, 450 Fifth Street,  N.W., Room 1024,  Washington,
D.C. 20549; at Citicorp Center,  500 West Madison Street,  Suite 1400,  Chicago,
Illinois 60661; and at Seven World Trade Center,  13th Floor, New York, New York
10048. In addition, the Company is required to file electronic versions of these
documents  through the  Commission's  Electronic  Data  Gathering,  Analysis and
Retrieval  system  (EDGAR).  The  Commission  maintains a World Wide Web site at
http://www.sec.gov  that contains reports,  proxy and information statements and
other  information  regarding  registrants  that  file  electronically  with the
Commission.  Copies of such  material may also be obtained at  prescribed  rates
from the Public  Reference  Section of the Commission,  450 Fifth Street,  N.W.,
Judiciary Plaza, Room 1024,  Washington,  D.C. 20549. The Common Stock is quoted
on the Nasdaq National Market.

         The Company has filed with the Commission a  Registration  Statement on
Form S-3, as amended (the  "Registration  Statement"),  under the Securities Act
with respect to the securities being offered by this Prospectus. As permitted by
the rules and  regulations of the  Commission,  this Prospectus does not contain
all the  information  set forth in the  Registration  Statement and the exhibits
thereto.  For further  information with respect to the Company and the offer and
sale of the securities,  reference is made to the Registration Statement and the
exhibits  thereto.  Statements  contained  in  this  Prospectus  concerning  the
provisions of documents  filed with the  Registration  Statement as exhibits are
necessarily summaries of such documents, and each such statement is qualified in
its entirety by reference to the copy of the applicable  document filed with the
Commission.  The Registration  Statement may be inspected  without charge at the
office of the Commission at 450 Fifth Street, N.W., Washington,  D.C. 20549, and
copies  of all or any  part  thereof  may be  obtained  from the  Commission  at
prescribed rates.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
   
         The  following  documents  previously  filed  by the  Company  with the
Commission  pursuant to the  Securities  Exchange  Act of 1934,  as amended (the
"Exchange Act") are hereby incorporated by reference in this Prospectus:

         (a) Annual  Report on Form 10-K for the fiscal year ended  December 31,
1997, as amended;
    
         (b)  Quarterly  Reports on Form 10-Q for the  quarters  ended March 31,
1998 and June 30, 1998;

         (c) Current Report on Form 8-K dated September 9, 1998; and

         (d)  The  description of the Common Stock offered  hereby  contained in
              the  Company's  Registration  Statement  on  Form  8-A  which  was
              declared effective by the Commission on December 9, 1996.


                                       2
<PAGE>


         All documents filed by the Company  pursuant to Sections 13(a),  13(c),
14 (other than, in the case of the Company's Proxy  Statement,  portions thereof
not deemed to be "filed" for the purposes of Section 18 of the Exchange Act) and
15(d) of the Exchange Act subsequent to the date of this Prospectus and prior to
the  termination of the offering of the securities to be made hereunder shall be
deemed to be  incorporated  herein by reference  and shall be a part hereof from
the date of filing of such  documents.  Any  statement  contained  in a document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or superseded  for purposes of this  Prospectus to the extent that a
statement  contained  herein or in any other  subsequently  filed document which
also  is or is  deemed  to be  incorporated  by  reference  herein  modifies  or
supersedes  such statement.  Any such statement so modified or superseded  shall
not be deemed, except as so modified or superseded,  to constitute a part of the
Registration Statement or this Prospectus.

         The Company will provide  without  charge to each person to whom a copy
of this  Prospectus  is  delivered,  upon the  written  or oral  request of such
person,  a copy of the  documents  incorporated  herein  or in the  Registration
Statement  by  reference  (other than  exhibits to such  documents,  unless such
exhibits are  specifically  incorporated  by reference into the  information the
Registration Statement so incorporates).  Written or telephone requests for such
documents should be directed to Investor Relations Department,  3DX Technologies
Inc.,  12012  Wickchester,  Suite 250,  Houston,  Texas 77079,  telephone  (281)
579-3398.

               SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION

         Certain  statements in the materials given to the Purchasers  including
statements  regarding  anticipated  capital  expenditures,  estimates  of proved
reserves, future rates of production, future growth, future exploration,  future
seismic data (including timing and results),  future reserves,  revenues, future
drilling  (including the timing and results  thereof),  expansion of operations,
generation of additional  prospects and results of current or future  prospects,
future  reserves and future  leases,  and other land  rights,  timing of capital
expenditures  and  regulatory  reform,  and other  statements  contained  herein
regarding matters that are not historical facts, are forward-looking  statements
(as such term is  defined in the  Private  Securities  Litigation  Reform Act of
1995). The words  "budgeted",  "anticipate,"  "project,"  "estimate,"  "expect,"
"may,"  "believe,"  "potential" and similar  statements are intended to be among
the statements  that are forward  looking  statements.  Because such  statements
include risks and uncertainties, actual results may differ materially from those
expressed  or implied by such  forward-looking  statements.  Factors  that could
cause actual results to differ materially include, but are not limited to, those
discussed under "Risk Factors" and in the Company's filings with the SEC.

                                   THE COMPANY
   
3DX  Technologies  Inc.  ("the  Company")  is  a  knowledge-based  oil  and  gas
exploration company whose core competence and strategic focus is the utilization
of 3-D  seismic  imaging  and other  advanced  technologies  in the  search  for
commercial quantities of hydrocarbons. The Company enters into partnerships that
enable  it to  combine  its  expertise  and  exploration  capabilities  with the
operating  skills of other oil and gas companies.  The Company  participates  in
selected exploration projects as a non-operating working interest owner, sharing
both risks and rewards with its partners.  The Company  commenced  operations in
January 1993 to take advantage of perceived  opportunities emerging from changes
in the domestic oil and gas industry,  including the divestiture of domestic oil
and gas  properties,  advances in technology and the  outsourcing of specialized
technical  capabilities.  By  reducing  drilling  risk  through  3-D imaging and
analysis,  the Company seeks to improve the expected return on investment in its
oil and gas projects.  In mid 1998,  the Company  changed its business model for
entering new 3-D projects. The Company has begun to form strategic relationships
with knowledge based  generators and to fund potential  projects  earlier in the
process of the project generation.  By providing 3-D seismic design,  management
of data acquisition and processing and  interpretation  of the data, the Company

                                       3
<PAGE>

generally  has had the  opportunity  to  acquire a 15% to 25%  working  interest
(often on a  promoted  basis) in an  individual  project  at the time of seismic
acquisitions.

         In  the  past,  new  project   opportunities  have  always  focused  on
externally  generated projects,  not internally  generated ideas. To provide the
continuous  source of projects for the drilling  program and future growth,  the
Company's  intent  is to blend the  previous  business  methodology  with a more
pro-active  internal  generating  capability.  The  Company  believes  that  the
benefits  of  this  approach  are  a  more  independent  and  stronger  internal
generating  expertise  and the  ability to maintain a larger  interest  level in
projects on a  non-promoted  basis.  To  accomplish  this in a timely manner the
Company is  currently  in  discussion  with two  private  companies  that should
generate the potential 3-D projects that the Company requires.

         The  ability to bring  additional  opportunities  into the Company at a
much earlier stage and on a non-promoted  basis allows the Company to modify and
improve on its business model. The intent of the Company is not simply to become
a promoter of oil and gas  prospects to the  industry but to use  promotion as a
resource  to  recover  technical  overhead  costs  associated  with  3D  seismic
projects. The intent is growth with a focus on drilling and better management of
costs.  As of  August  1998,  the  Company's  portfolio  included  45  prospects
identified on 12 separate 3-D projects primarily located onshore within the Gulf
Coast region from South Texas to Louisiana.
    
         The Company was incorporated under the laws of the State of Delaware in
1992. Its offices are located at 12012  Wickchester,  Suite 250, Houston,  Texas
77079 and its telephone number is (281) 579-3398.

                                  RISK FACTORS

      In  addition  to the  other  information  and  financial  data  set  forth
elsewhere in this  Prospectus,  the following  risk factors should be considered
carefully in  evaluating  the Company and its  business  before  purchasing  the
shares of Common Stock offered hereby.
   
Limited Operating History
    
      The  Company  commenced  its  operations  in 1993 and has  only a  limited
operating  history.  Potential  investors,  therefore,  have limited  historical
financial  and  operating  information  upon which to base an  evaluation of the
Company's  performance and an investment in shares of Common Stock. For example,
the  producing  wells  within  exploration  projects  in which  the  Company  is
participating  have  been  on  production  only  for a  short  period  of  time.
Therefore,  estimations  with respect to the proved reserves and level of future
production  attributable to these wells are difficult to determine and there can
be no assurance as to the volume of  recoverable  reserves that will be realized
from such wells.  The  Company's  prospects  must be  considered in light of the
risks,  expenses and  difficulties  frequently  encountered  by companies in the
early stages of their development.
   
Significant Historical Operating Losses
    
         The Company has incurred significant  operating and net losses to date.
Net losses for 1995, 1996 and 1997 were approximately $2.5 million, $2.7 million
and $11 million,  respectively. At June 30, 1998, the Company had an accumulated
deficit of $26.2  million.  The  development  of the Company's  business and its
participation in an increasingly larger number of projects has required and will
continue to require  substantial  expenditures.  The Company's  future financial
results will depend primarily on its ability to economically locate hydrocarbons
in   commercial   quantities,   to  provide   drilling  site  and  target  depth
recommendations  resulting  in  profitable  productive  wells and on the  market
prices for oil and gas.  There can be no assurance that the Company will achieve
or sustain profitability or positive cash flows from operating activities in the
future.

                                       4

<PAGE>
   
Future Capital Requirements

         Management  of  the  Company   continues  to  be  actively  engaged  in
soliciting  new equity  investors  to provide  funding for its capital  program.
Management  of the Company  understands  that the  Company's  business  requires
substantial  oil and gas  expenditures  and that  additional  financing  will be
required to completely fund its capital  program,  which includes two additional
exploration  wells and one development well in 1998 and up to 17 exploration and
development   wells  in  1999  as  well  as  a  lease  acquisition  and  seismic
expenditures.  As of June 30, 1998, the Company had a deficit in working capital
of  approximately  $2.8 million.  The lack of firm  commitments  for  additional
equity financing at this time, combined with a deficit in working capital, raise
uncertainty about the ability of the Company to continue as a going concern.  In
September 1998, the Company's  independent public accountants  included a fourth
paragraph  in their  report  on the 1997  financial  statements  of the  Company
related to the Company's  uncertain ability to continue as a going concern.  The
Company's  continuation  as a going  concern is  dependent  upon its  ability to
generate  sufficient  cash flow to meet its obligations on a timely basis and to
comply  with the terms of its  financing  agreement.  Based on current  economic
conditions, the Company will require sources of capital in addition to projected
cash generated from operations to fund its future capital  expenditures.  In the
absence of additional funding, the Company may be required to reduce its planned
level of capital  expenditures  or pursue other  financial  alternatives,  which
could include a sale or merger of the Company.
    
Volatility of Oil and Gas Prices

         The Company's revenues,  profitability, cash flow and future growth are
affected by changes in  prevailing  oil and gas prices.  Oil and gas prices have
been  subject to wide  fluctuations  in recent  years in response to  relatively
minor changes in the supply and demand for oil and gas, market uncertainty and a
variety  of  additional  factors  that are beyond  the  control of the  Company,
including economic,  political and regulatory  developments and competition from
other sources of energy.  It is  impossible to predict  future oil and gas price
movements.  Currently,  the Company does not engage in hedging activities.  As a
result,  the Company may be more adversely  affected by  fluctuations in oil and
gas prices than other industry  participants  that do engage in such activities.
No assurances can be given as to the future level of activity in the oil and gas
exploration and development  industry and its  relationship to the future demand
for the expertise offered by the Company.  An extended or substantial decline in
oil and gas  prices  could  have a  material  adverse  effect  on the  Company's
financial position and results of operations, the volume of oil and gas that may
be  economically  produced  by  operations  of  projects  in which  the  Company
participates and the Company's access to capital.

Non-Operator Status
   
         The Company  relies  upon other  project  partners  to provide  certain
project operations including land acquisition,  drilling,  marketing and project
administration.  As a result, the Company has only a limited ability to exercise
control over a significant  number of a project's  operations or the  associated
costs of such  operations.  While the Company  monitors  the  activities  of the
operator,  the Company does not engage in any other activities to protect itself
against its  inability  to control  project  costs.  The success of a project is
dependent  upon a number of factors which are outside of the  Company's  area of
expertise  and  project   responsibilities.   Such  factors  include:   (i)  the
availability of favorable lease terms and required permitting for projects, (ii)
the  availability  of future  capital  resources  by the  Company  and the other
participants  for the purchasing of leases and the drilling of wells,  (iii) the
approval of other  participants  to the purchasing of leases and the drilling of
wells on the  projects,  (iv) the economic  conditions  at the time of drilling,
including  the  prevailing  and  anticipated  prices for oil and gas and (v) the
ability of the operator to successfully  and adequately  perform its tasks.  The
Company's reliance on other project partners and its limited ability to directly
control  certain  project  costs  could  have a material  adverse  effect on the
realization of expected rates of return on the Company's investment in projects.
    
                                       5
<PAGE>

Ability to Discover Additional Reserves

         The  Company's   future  success  is  dependent  upon  its  ability  to
economically  locate  additional oil and gas reserves in commercial  quantities.
The Company's ability to do so is dependent upon a number of factors,  including
its  participation  in  multiple  exploration  projects  and  its  technological
capability to locate oil and gas in commercial quantities.  The Company does not
yet generate or develop its own projects and no assurances can be given that the
Company will have the opportunity to participate in projects which  economically
produce  commercial  quantities of hydrocarbons in amounts necessary to meet its
business  plan or that the  projects in which it elects to  participate  will be
successful.   Except  to  the  extent  that  the  Company  successfully  locates
commercial  quantities of  economically  recoverable  oil and gas, the Company's
proved reserves will decline as reserves are produced. There can be no assurance
that the Company will be able to discover  additional  commercial  quantities of
oil and gas or that the Company's  project  partners will have success  drilling
productive wells and acquiring properties at low finding costs.

Substantial Capital Requirements and Liquidity
   
         To date, net cash provided by operating activities has been limited and
the  Company  has  funded  its oil and gas  exploration  activities  principally
through cash provided by the sale of equity  securities and long-term  debt. The
Company's  business requires  substantial oil and gas capital  expenditures.  To
achieve its near-term  goals,  the Company has been and will be required to make
oil and gas capital  expenditures  substantially  in excess of its net cash flow
from operations in order to acquire, explore and develop oil and gas properties.
The level of capital spending in the future will be dependent upon the Company's
ability to obtain additional sources of funding.
    
         The  Company  will  require  additional  sources of  financing  to fund
drilling  expenditures  on properties  currently  owned by the Company and, to a
lesser extent,  to fund leasehold costs and geological and geophysical  costs on
its active  exploration  projects.  The Company generally has the right, but not
the obligation, to participate for its percentage interest in drilling wells and
can decline to participate if it does not have sufficient  capital  resources at
the time such drilling operations are proposed. The Company can also potentially
transfer  its right to  participate  in drilling  wells in exchange  for cash, a
reversionary interest, or some combination thereof. To recover its investment in
unevaluated properties, it is necessary for the Company to either participate in
drilling which finds commercial oil and gas production and produce such reserves
or receive sufficient value through the sale or transfer of its interests.

         The  Company  expects  that its  projected  cash flows  from  currently
producing   properties   will  be  sufficient  to  fund  its  cash  general  and
administrative  costs for the  remainder of 1998 as well as the first six months
of 1999,  including  technical  employee and related costs which are capitalized
under full-cost  accounting,  however,  these cash flows are not projected to be
sufficient  to fund the  current  deficit  in  working  capital.  The  Company's
projections of cash flows from currently producing properties could be adversely
affected by declines in oil and gas prices below current  levels or  anticipated
seasonal lows and unanticipated declines in oil and gas production from existing
properties.

         The Company intends to seek additional financing to satisfy its capital
requirements.  The  Company  is  currently  evaluating  alternatives  to  obtain
additional equity  financing,  which include sales of common or preferred stock.
In the absence of additional financing,  the Company anticipates that it will be
required to modify the  implementation and timing of its oil and gas exploration
and development  capital  spending for 1998 and 1999, which  modification  could
have a material  adverse  effect on the Company.  No assurance can be given that
the Company will be able to obtain additional  financing on terms which would be
acceptable  to the  Company,  if at  all.  The  Company's  inability  to  obtain
additional  financing would have a material  adverse effect on the Company.  The
lack of firm  commitments for equity  financing at this time,  combined with the
deficit in working capital,  raises uncertainty about the ability of the Company

                                       6
<PAGE>

to  continue  as a going  concern.  In the absence of  additional  funding,  the
Company may be required to reduce its planned level of capital  expenditures  or
pursue other financial alternatives, which could include a sale or merger of the
Company.
   
Credit Agreement Non-Compliance

         As of June 30,  1998,  the Company had a deficit in working  capital of
approximately $2.8 million.  On December 18, 1997, the Company executed a credit
agreement  with a commercial  bank,  the borrowing  capacity of which was set at
$2.0 million in April 1998.  During the quarter ended June 30, 1998, the Company
borrowed  $2.0 million  under the credit  agreement.  Such amount is the maximum
amount  currently  available  for  borrowing  under  the  credit  facility.  The
borrowing  capacity is a function of the value of the  Company's  proved oil and
gas reserves,  and is  redetermined  on a semi-annual  basis. In April 1998, the
bank,  based on its assessment of the Company's proved resources at December 31,
1997 and related cash flow estimates,  reduced the Company's available borrowing
to $2  million.  The credit  agreement  is secured by  substantially  all of the
Company's  oil and gas  properties  and contains  restrictions  on dividends and
additional  liens and  indebtedness  and requires the  maintenance  of a minimum
current ratio and net worth, each as defined in the credit agreement. As of June
30, 1998, the Company was not in compliance with certain covenants of the credit
agreement  pertaining to minimum working capital and aging of accounts  payable.
The bank waived these instances of  non-compliance  through  September 30, 1998.
The  Company  has  contacted  the  bank  to  secure  an  additional   waiver  of
non-compliance  through  December 31, 1998. In the absence of an  improvement in
the Company's  working capital accounts  payable aging,  future waivers from the
bank will be necessary.

Potential Sales of Certain Properties

         As a result of the Company's periodic review of each of its oil and gas
exploration and development  properties and its available  capital,  the Company
has  occasionally  sold  partial  interests  in specific oil and gas projects to
other investors to reduce its total investment  commitment to such projects.  No
gain or loss has been recognized on these  transactions.  In September 1998, the
Company  sold  one  of  its  properties   located  in  Cove  Field,   Texas  for
approximately  $440,000.  In accordance with full cost accounting rules, no gain
or loss was  recorded  on this sale of an oil and gas  property.  The Company is
currently  reviewing  its  portfolio  to identify  properties  to be marketed to
industry partners for cash consideration, reversionary working interests or some
combination  thereof.  Such  interests may consist of both  producing  wells and
future drilling locations.

         As of the date hereof,  there were three  probable  property sales with
proceeds  aggregating  approximately $3.7 million,  each of which is expected to
close in the fourth  quarter of 1998.  The  Company  intends to utilize  all the
proceeds  from these  property  sales to reduce the balance of borrowings on the
Company's bank credit agreement and current payables.  Because none of the sales
are expected to have a significant  effect on the oil and gas property depletion
rate,  no gain or loss is  expected  to be  recognized  in income on these sales
transactions.  The properties'  discounted future net cash flows as of September
30, 1998 totaled  approximately $3.2 million. Net revenues from these properties
for the year ended  December  31, 1997 and the  six-month  period ended June 30,
1998 approximated $0.2 million and $0.8 million,  respectively.  There can be no
assurance,  however,  that  the  Company  will be able to sell  any  other  such
interests,  or that the terms of such other  potential sales would be acceptable
to the Company.

    
Uncertainty of Estimates of Oil and Gas Reserves

         There are numerous  uncertainties  inherent in  estimating  oil and gas
reserves and in projecting future rates of production.  Petroleum engineering is
a subjective process of estimating underground accumulations 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 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 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.   at  different  times  may  vary  substantially.   Actual
production,  revenues and  expenditures  with respect to the Company's  reserves
will likely vary from estimates, and such variances may be material.

                                       7
<PAGE>

Risk of Exploratory Drilling Activities

         The  success  of the  Company  will be  materially  dependent  upon the
continued  success of its exploratory  drilling  program.  Exploratory  drilling
involves numerous risks, including the risk that no commercially  productive oil
or natural gas reservoirs will be encountered. The cost of drilling,  completing
and  operating  wells  is  often  uncertain,  and  drilling  operations  may  be
curtailed,  delayed or cancelled 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 or delivery  crews and the  delivery of  equipment.  Although the
Company believes that its use of 3-D seismic data and other advanced  technology
should  increase the  probability  of success of its  exploratory  wells through
elimination of prospects that might  otherwise be drilled solely on the basis of
2-D seismic data and other traditional  methods,  exploratory drilling remains a
speculative  activity.  Even when fully utilized and properly  interpreted,  3-D
seismic data and advanced  techniques only assist  geoscientists  in identifying
subsurface  structures and do not allow the  interpreter to know if hydrocarbons
will in fact be present in such structures if they are drilled. In addition, the
use of 3-D seismic  data and such  technologies  requires  greater  pre-drilling
expenditures  than traditional  drilling  strategies and the Company could incur
losses  as  a  result  of  such  expenditures.  The  Company's  future  drilling
activities may not be successful and, if unsuccessful, such failure will have an
adverse  effect on the  Company's  future  results of  operations  and financial
condition. There can be no assurance that the Company's overall drilling success
rate or its drilling success rate for activity within a particular  project area
will not decline.  Although the Company has  identified or budgeted for numerous
drilling prospects, there can be no assurance that such prospects will be leased
or drilled  (or drilled  within the  scheduled  or budgeted  time frame) or that
natural gas or oil will be produced  from any such  identified  prospects or any
other  prospects.  Prospects  may  initially be  identified  through a number of
methods,  some of which do not include  interpretation  of 3-D or other  seismic
data.

Competition

         The   exploration  for  and  production  of  oil  and  gas  are  highly
competitive.  Many  companies  and  individuals  are engaged in the  business of
acquiring  interests  in and  developing  onshore  and near  onshore oil and gas
properties  in the United  States.  The industry is not  dominated by any single
competitor or a small number of competitors.  The Company  competes with a large
number of technology-driven  major and independent oil and gas companies for the
acquisition  of desirable oil and gas  properties,  as well as for the equipment
and  expertise  required to operate and develop such  properties.  Many of these
competitors have financial and other resources  substantially in excess of those
available to the Company. Such competitive  disadvantages could adversely affect
the Company's ability to participate in projects with favorable rates of return.

Technological Changes

         The oil and gas  industry  is  characterized  by rapid and  significant
technological  advancements  and  introductions  of new  products  and  services
utilizing new  technologies.  As new  technologies  develop,  the Company may be
placed at a competitive  disadvantage,  and competitive  pressures may force the
Company to implement such new technologies at substantial  cost. There can be no
assurance that the Company will be able to respond to such competitive pressures
and implement such  technologies on a timely basis or at an acceptable cost. One
or more of the technologies  currently utilized by the Company or implemented in
the future may become obsolete. In such case, the Company's business,  financial
condition and results of operations could be materially  adversely affected.  If
the  Company  is unable to  utilize  the most  advanced  commercially  available
technology,   the  Company's  business,   financial  condition  and  results  of
operations could be materially and adversely affected.

                                       8
<PAGE>
   
Operating Risks of Oil and Natural Gas Operations; Limited Insurance Coverage

      The oil and natural 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  Company.  In  addition,  offshore
projects are subject to the  additional  hazards of marine  operations,  such as
capsizing,  collision  and  damage  or loss from  severe  weather.  The  Company
maintains insurance,  which is subject to policy conditions and exclusions,  for
third party claims  based on bodily  injury and  property  damage,  cost of well
control and workers' compensation.
    
      The  availability  of a ready market for the Company's oil and natural gas
production  also  depends on the  proximity of reserves to, and the capacity of,
oil and  natural  gas  gathering  systems,  pipelines  and  trucking or terminal
facilities.  In addition,  the Company may be liable for  environmental  damages
caused by previous owners of property purchased and leased by the Company.

      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  Company's  properties.  In  accordance  with  customary  industry
practices,  the Company  maintains  insurance against some, but not all, of such
risks and losses.  The  occurrence  of an event not fully  covered by  insurance
could have a material  adverse effect on the financial  condition and results of
operations of the Company.

Government Regulation and Environmental Matters

      Oil and natural gas operations are subject to various  federal,  state and
local government regulations, which 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 natural
gas. In addition, the development, production, handling, storage, transportation
and disposal of oil and natural gas,  by-products  thereof and other  substances
and materials produced or used in connection with oil and natural gas operations
are subject to regulation  under federal,  state and local laws and  regulations
primarily  relating  to  protection  of human  health and the  environment.  The
Company is also subject to changing and extensive tax laws, the effects of which
cannot be predicted. The implementation of new, or the modification of existing,
laws or regulations could have a material adverse effect on the Company.

Variability of Operating Results

         The Company's  operating results have in the past and may in the future
fluctuate  significantly  depending upon a number of factors including  industry
conditions, prices of oil and gas, rate of drilling success, rates of production
from completed wells and the timing of capital  expenditures.  Such  variability
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and results of  operations.  In addition,  any failure or delay in the
realization  of expected cash flows from  operating  activities  could limit the
Company's ability to invest and participate in economically attractive projects.

Dependence on Key Personnel

         The  Company  has  assembled a team of  geologists,  geophysicists  and
engineers  who have  considerable  experience  effectively  applying 3-D imaging
technologies. The Company is dependent upon the knowledge, skills and experience
of these  experts to provide 3-D imaging and assist the Company in reducing  the
risks associated with its participation in oil and gas exploration  projects. In
addition,  the success of the  Company's  business also depends to a significant

                                       9
<PAGE>

extent upon the abilities and continued efforts of its management,  particularly
Ronald P. Nowak,  the  Company's  President  and Chief  Executive  Officer.  The
Company does not have employment agreements with any of its employees except Mr.
Nowak,  which provides for an employment term of two years ending February 2000.
The loss of the services of key management  personnel or the Company's technical
experts, or the inability to attract additional qualified personnel,  could have
a  material  adverse  effect on the  Company's  business,  financial  condition,
results of operations,  development efforts and ability to expand.  There can be
no assurance  that the Company will be successful  in  attracting  and retaining
such executives, geoscientists and engineers.

Possible Volatility of Stock Price

         The market  price of the Common  Stock could be subject to  significant
fluctuations in response to various factors and events,  including the liquidity
of the  market for the  Common  Stock,  variations  in the  Company's  quarterly
operating  results,  regulatory  or other  changes  in the oil and gas  industry
generally,  announcements  of  business  developments  by  the  Company  or  its
competitors,   changes  in  operating   costs  and  changes  in  general  market
conditions. See "-Variability of Operating Results."

Anti-Takeover Considerations
   
         The Company's  Restated  Certificate of Incorporation (the "Certificate
of  Incorporation")  and Amended and  Restated  By-laws (the  "Bylaws")  include
certain provisions that are intended to enhance the likelihood of continuity and
stability  in the  composition  of  the  Company's  Board  of  Directors.  These
provisions  may have the effect of delaying,  deterring  or  preventing a future
takeover or change in control of the Company  unless such  takeover or change in
control is  approved by the  Company's  Board of  Directors,  even though such a
transaction  may offer the holders of Common Stock the opportunity to sell their
stock at a price above the  prevailing  market price.  Such  provisions may also
render the removal of directors and management more difficult. Specifically, the
Certificate of Incorporation  and Bylaws,  as the case may be, have been amended
to provide for a classified  Board of Directors  serving  staggered,  three-year
terms and certain advance notice  requirements  for  stockholder  nominations of
candidates  for election to the  Company's  Board of Directors and certain other
stockholder  proposals.  Such  provisions  could  limit the price  that  certain
persons  might be willing to pay in the future for shares of Common  Stock.  The
Certificate  of  Incorporation  also  authorizes  the Board of  Directors of the
Company to issue from time to time,  without any further action of stockholders,
up to one million shares of Preferred Stock (as defined  herein),  on such terms
and with such rights, designations, preferences, qualifications, limitations and
restrictions  as the Board of  Directors  may  determine.  The  issuance of such
Preferred  Stock,   depending  upon  the  rights,   designations,   preferences,
qualifications,  limitations and  restrictions  thereof,  may have the effect of
delaying,  deterring  or  preventing  a change in control of the  Company or may
otherwise  adversely  affect the interests of holders of Common Stock.  Further,
certain provisions of the Delaware General  Corporation Law (the "DGCL") prevent
certain  stockholders  from engaging in business  combinations with the Company,
subject to certain exceptions.

Continued Listing on Nasdaq

         In September 1998, the Company  received a letter from The Nasdaq Stock
Market,  Inc.  notifying  the  Company  that it failed to maintain a closing bid
price of  greater  than or equal to $1.00 and that the  Company's  Common  Stock
failed to maintain a market  value of public  float  greater than or equal to $5
million,  as required by Nasdaq rules.  If the Company is unable to  demonstrate
compliance  with the $1.00 minimum bid price  requirement on or before  December
14, 1998, the Company's Common Stock will be delisted at the opening of business
on December  16,  1998.  In such an event,  trading on the Common Stock would be
conducted  in  the  over-the-counter  market  on an  electronic  bulletin  board
established for securities that do not meet the listing requirements for Nasdaq,
or in what are commonly  referred to as the "pink sheets." As a result, a holder
of the Common  Stock  could find it more  difficult  to dispose of, or to obtain
accurate  quotations of the price of the Common Stock. Such delisting could have
an adverse  effect on the market price and overall  marketability  of the common
stock.
                                       10
<PAGE>

Penny Stock Regulations

         If the common  stock is not listed on Nasdaq and has a market  price of
less than $5.00 per share,  it may be classified as a "penny stock."  Commission
regulations define a "penny stock" to be any non-Nasdaq equity security that has
a market price of less than $5.00 per share, subject to certain exceptions.  For
any  transaction  involving a penny  stock,  unless  exempt,  the rules  require
delivery,  prior to any transaction in a penny stock,  of a disclosure  schedule
prepared by the  Commission  relating to the penny stock  market.  Disclosure is
also required to be made about commissions payable to both the broker-dealer and
the  registered  representative  and  to  provide  current  quotations  for  the
securities.  Finally,  monthly  statements  are  required to be sent  disclosing
recent price information for the penny stock held in the account and information
on the limited market in penny stocks.

         The foregoing  required penny stock  restrictions will not apply to the
common stock if such  securities are quoted in Nasdaq and have certain price and
volume  information  provided on a current and continuing  basis or meet certain
minimum  net  tangible  assets  or  average  revenue  criteria.  There can be no
assurance   that  the  common  stock  will  qualify  for  exemption  from  these
restrictions.  In any event, even if shares of the common stock were exempt from
such restrictions, they would remain subject to Section 15(b)(6) of the Exchange
Act, which gives the SEC the authority to prohibit any person that is engaged in
unlawful  conduct while  participating  in a distribution  of a penny stock from
associating  with a broker-dealer  or participating in a distribution of a penny
stock, if the SEC finds that such a restriction would be in the public interest.
If the  Common  Stock  were  subject  to the rules on penny  stocks,  the market
liquidity for the common stock could be severely adversely affected.
    

                              SELLING STOCKHOLDERS
   
         The following  table sets forth,  to the knowledge of the Company,  the
number of shares of Common Stock and the percentage of the outstanding shares of
Common Stock beneficially owned by each Selling  Stockholder,  and the number of
Shares to be offered  and sold by such  Selling  Stockholder,  and the number of
shares and percentage of  outstanding  shares to be  beneficially  owned by such
Selling  Stockholder after such offering and sale,  assuming that all the shares
offered  by  such  Selling  Stockholder  are  in  fact  sold.  Unless  otherwise
indicated,  each  person has sole  investment  and voting  power (or shares such
powers  with his or her  spouse)  with  respect  to the  shares set forth in the
following  table.  As of October 26, 1998 the  Company had  9,153,854  shares of
Common Stock issued and outstanding.
<TABLE>
<CAPTION>


                                     ------------------------------------                     -----------------------------------
                                            Beneficial Ownership                                     Beneficial Ownership
                                            Prior to the Offering                                     After the Offering
                                     ------------------------------------                     -----------------------------------

                                         Shares of                              Shares to          Shares of
                                        Common Stock       Percentage (1)        Be Sold          Common Stock    Percentage
                                        ------------       --------------        -------          ------------    ----------
<S>                                      <C>                <C>               <C>                  <C>           <C>

Altira Group LLC                           16,667                  *%              16,667                0             -
Andrew James McLeod Duncan                                         *               15,000                0             -
 Educational Trust                         15,000
Barbara Oil Company                        37,913                  *               37,913                0             -
Alex B. Campbell                            1,466                  *                1,466
Centennial Associates L.P.                198,468               2.17              198,468                0             -
Centennial Energy Partners L.P.           113,595               1.24              113,595                0             -
Centennial Overseas Fund, LTD              20,000                  *               20,000                0             -
CWS Limited Liability Company             877,228               9.58              877,228                0             -


                                       11
<PAGE>

Jonathan T. Dawson                         18,047                  *               18,047                0             -
Dawson/Samberg Capital                     90,237                1.0               90,237                0             -
   Management
Peter M. Duncan(2)                        345,592               3.78              345,592           20,144             *
Charles E. Edwards(3)                      20,878                  *               20,878            3,877             *
C. Eugene Ennis(4)                        309,555               3.37              309,555           20,144             *
Evelyn Ennis                              226,351               2.47              226,351                0             -
Paul D. Favret                              7,333                  *                7,333                0             -
Peter Gough                                 5,687                  *                5,687                0             -
Investment 11, LLC                         10,000                  *               10,000                0             -
Jeffrey Alexander McLeod                   15,000                  *               15,000                0             -
   Duncan Education Trust
Minnowburn Corporation                    233,333               2.55              233,333                0             -
Susan Morrice                             111,147               1.21              111,147                0             -
NationsBanc Capital Corporation           721,903               7.89              721,903                0             -
Douglas C. Nester(5)                      377,592               4.12              377,592           20,144             *
James R. Newell                            13,333                  *               13,333                0             -
Deborah W. Pratt                           18,047                  *               18,047                0             -
Quadrennial Partners, L.P.                 10,000                  *               10,000                0             -
R. Chaney & Partners 1993 L.P.            340,825               3.72              340,825                0             -
Santa Fe Energy Resources, Inc.           240,000               2.66              240,000                0             -
Kenneth Strode                             24,584                  *               24,584                0             -
Tercentennial Energy Partners, L.P.        40,000                  *               40,000                0             -
Wayne W. Williamson                        22,000                  *               22,000                0             -
Donald D. Wolf                             33,333                  *               33,333                0             -
</TABLE>

- ----------------------
*  Represents holdings of less than one percent.
(1) Percent of class is calculated by assuming,  for purposes of the number
    of shares held by any Selling  Stockholder  that all  options that are,  or
    will  become  within 60 days, exercisable to purchase Common Stock held by 
    such Selling  Stockholder  (and no others) had been exercised.
(2) Includes  20,144 shares  subject to options which are, or will become within
    60 days,  vested and  exercisable.
(3) Includes 3,877 shares subject to options which are, or will become within 60
    days,  vested and exercisable.
(4) Includes 20,144  shares  subject to options  which are,  or will  become
    within 60 days, vested and exercisable.
(5) Includes 20,144 shares subject to options which are, or will become within
    60 days, vested and exercisable.



         Each of C.  Eugene  Ennis,  Peter M.  Duncan and  Douglas C. Nester was
employed by the Company in various  positions during the past three years.  None
of the other Selling  Stockholders who is an individual is currently employed by
the Company.

         The Selling  Stockholders  (other than Santa Fe Energy Resources,  Inc.
("Santa  Fe"))  acquired  their  Shares  pursuant  to one or more of (i) a Stock
Purchase  Agreement dated as of November 3, 1993 between the Company and certain
investors,  (ii) a Series C Preferred Stock Purchase  Agreement dated as of July
26, 1995  between the Company  and certain  investors  and (iii) a Common  Stock
Subscription  Agreement  dated June 3, 1998  between  the  Company  and  certain
investors,  or as permitted  transferees of persons who so acquired such Shares.
Santa Fe acquired their Shares pursuant to a Common Stock Subscription Agreement
dated  as of  August  21,  1998.  Pursuant  to  the  Common  Stock  Subscription
Agreements,  the Company agreed to effect the  registration  of the offering and
sale of the Shares issued  thereunder on a delayed or continuous basis under the
Securities Act on certain terms and conditions. The Stock Purchase Agreement and
the Series C Preferred Stock Purchase  Agreement  provide for  "piggy-back"  and
other registration rights on certain terms and conditions.
    
                              PLAN OF DISTRIBUTION

         The Shares may be offered  and sold from time to time by one or more of
the  Selling  Stockholders,   or  by  pledgees,  donees,  transferees  or  other
successors in interest.  No Selling Stockholder is required to offer or sell any
of his or its Shares.  The Selling  Stockholders  anticipate  that,  if and when
offered and sold, the Shares will be offered and sold in transactions (which may
include  block  transactions)  effected  on the Nasdaq  National  Market at then

                                       12
<PAGE>

prevailing market prices. The Selling Stockholders  reserve the right,  however,
to offer and sell the Shares on any other national  securities exchange on which
the Common Stock is or may become listed or in the  over-the-counter  market, in
each  case  at  then  prevailing  market  prices,  or  in  privately  negotiated
transactions each at a price then to be negotiated. All offers and sales made on
the Nasdaq National Market or any other national  securities  exchange or in the
over-the-counter market will be made through or to licensed brokers and dealers.
No agreements,  arrangements or  understandings  have been entered into with any
broker or dealer,  and no brokers or dealers have been  selected,  in connection
with the  offer  and sale of the  Shares.  No  discounts,  commissions  or other
compensation will be allowed or paid by the Selling  Stockholders or the Company
in  connection  with the offer and sale of the  Shares,  except  that  usual and
customary  brokers'  commissions  may be paid by the Selling  Stockholders.  All
proceeds  from the  sale of the  Shares  will be paid  directly  to the  Selling
Stockholders  and will not be  deposited  in an escrow,  trust or other  similar
arrangement.

         The  selling  broker  may act as agent or may  acquire  the  Shares  or
interests  therein as  principal or pledgee and may,  from time to time,  effect
distributions of the Shares or interests. If a dealer is utilized in the sale of
the  Shares in  respect  of which  the  Prospectus  is  delivered,  the  Selling
Stockholders  will sell the Shares to the dealer,  as principal.  The dealer may
then resell the Shares to the public at varying  prices to be determined by such
dealer at the time of resale.

         The Company has agreed to indemnify  the Selling  Stockholders  and the
Selling  Stockholders  have  agreed to  indemnify  the  Company,  its  officers,
directors,  employees,  agents and  controlling  persons from certain damages or
liabilities  arising out of or based upon any untrue statement or alleged untrue
statement of any  material  fact  contained  in or material  omission or alleged
omission from the  Registration  Statement,  any  preliminary,  final or summary
prospectus  contained therein,  or any amendment or supplement  thereto,  to the
extent such untrue statement or omission was made in the Registration  Statement
or other  document in reliance upon  information  furnished by the  indemnifying
party.

         The legal,  accounting and other fees and expenses related to the offer
and sale of the Shares  contemplated hereby are estimated to be $55,000 and will
be paid by the Company. The Company will pay all expenses incurred in connection
with this offering, excluding commissions charged by any broker or dealer acting
on behalf of a Selling Stockholder.

                                     EXPERTS

         The audited  financial  statements  incorporated  by  reference in this
prospectus  and  elsewhere in the  registration  statement  have been audited by
Arthur  Andersen  LLP,  independent  public  accountants,  as indicated in their
reports  with respect  thereto,  and are  included  herein in reliance  upon the
authority of said firm as experts in giving said  reports.  Reference is made to
said report  included in the Company's Form 8-K dated  September 9, 1998,  which
contains an  explanatory  fourth  paragraph  with  respect to the  existence  of
substantial doubt about the Company's ability to continue as a going concern, as
described more fully in Note 11 to the financial statements.

         The reports of independent petroleum engineers, dated December 31, 1997
and June 30, 1998  incorporated by reference in this Prospectus and elsewhere in
this  registration  statement are  incorporated by reference  herein in reliance
upon the authority of said firm as experts in giving said reports.

                                  LEGAL MATTERS

         Certain legal matters in connection with the legality of the securities
offered  hereby  have been  passed  upon for the Company by Kelley Drye & Warren
LLP, 101 Park Avenue,  New York,  New York 10178,  and Two Stamford  Plaza,  281
Tresser Boulevard, Stamford, Connecticut 06901.

                                    * * * * *

                                       13

<PAGE>

   
No  dealer,   salesperson  or  other               3DX TECHNOLOGIES INC.
person has been  authorized  to give
any   information  or  to  make  any
representation not contained in this
Prospectus,  and,  if given or made,
such  information or  representation
must not be  relied  upon as  having                     4,515,114
been authorized by the Company. This                       Shares
Prospectus  does not  constitute  an
offer to sell or a  solicitation  of
an   offer   to   buy   any  of  the
securities  offered  hereby  in  any
jurisdiction  to any  person to whom
it is unlawful to make such offer in
such   jurisdiction.   Neither   the                    Common Stock
delivery of this  Prospectus nor any                  ($.01 par value)
sale made hereunder shall, under any
circumstances,       create      any
implication  that  there has been no
change in the affairs of the Company
since  the date  hereof  or that the
information   contained   herein  is
correct as of any time subsequent to                ____________________
its date.
                                                         PROSPECTUS
                                                      _______________
      ____________________
    

                    TABLE OF CONTENTS

                                                    Page

Available Information..............................   2
Incorporation of Certain Documents
     by Reference..................................   2
Special Note Regarding Forward-Looking
     Information...................................   3
The Company........................................   3
Risk Factors.......................................   4
Selling Stockholders...............................  11
Plan of Distribution...............................  12
Experts  ..........................................  13
Legal Matters......................................  13







<PAGE>
                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution
   
                                                                 Amount To
          Type or Nature of Expense                               be Paid
          -------------------------                              ---------
 SEC registration fee....................................       $   470.70
 Accounting fees and expenses............................        25,000.00
 Legal fees and expenses.................................        25,000.00
 Miscellaneous  . .......................................         4,529.30
                                                                 --------
 Total             ......................................       $55,000.00
                                                                 ========
    
Item 15.  Indemnification of Officers and Directors

         Section  145 of the  Delaware  General  Corporation  Law  (the  "DGCL")
provides  that a Delaware  corporation  may indemnify any person who was or is a
party  or is  threatened  to be  made a  party  to any  threatened,  pending  or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative (a  "proceeding")  (other than an action by or in the right of the
corporation)  by  reason  of the  fact  that he is or was a  director,  officer,
employee or agent of the corporation, or is or was serving at the request of the
corporation as a director,  officer,  employee or agent of another  corporation,
partnership,   joint  venture,  trust  or  other  enterprise,  against  expenses
(including  attorneys'  fees),  judgments,  fines and amounts paid in settlement
actually and reasonably  incurred by him in connection with such actin,  suit or
proceeding if he acted in good faith and in a manner he  reasonably  believed to
be in or not opposed to the best interests of the corporation, and, with respect
to any criminal  action or  proceeding,  had no reasonable  cause to believe his
conduct was unlawful. A Delaware corporation may indemnify any person under such
Section in connection with a proceeding by or in the right of the corporation to
procure  judgment in its favor, as provided in the preceding  sentence,  against
expenses (including  attorneys' fees) actually and reasonably incurred by him in
connection  with the  defense  or  settlement  of such  action,  except  that no
indemnification  shall be made in respect thereof  unless,  and then only to the
extent that, a court of competent  jurisdiction shall determine upon application
that  such  person is fairly  and  reasonably  entitled  to  indemnity  for such
expenses as the court shall deem proper.  A Delaware  corporation must indemnify
any  person who was  successful  on the  merits or  otherwise  in defense of any
action,  suit or proceeding  or in defense of any claim,  issue or matter in any
proceeding,  by  reason  of the  fact  that  he is or was a  director,  officer,
employee or agent of the  corporation or is or was serving at the request of the
corporation,   against  expenses   (including   attorneys'  fees)  actually  and
reasonably incurred by him in connection  therewith.  A Delaware corporation may
pay for the  expenses  (including  attorneys'  fees)  incurred  by an officer or
director in defending a proceeding in advance of the final  disposition to repay
such amount if it shall  ultimately be determined  that he is not entitled to be
indemnified by the corporation.

         Section  102(b)(7) of the DGCL permits a corporation  to provide in its
certificate of incorporation  that a director shall not be personally  liable to
the  corporation  or its  stockholders  for  monetary  damages  for a breach  of
fiduciary  duty as a director,  except for  liability  (i) for any breach of the
director's duty of loyalty to the corporation or its stockholders,  (ii) for any
acts or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, (iii) in respect of certain unlawful dividend payments
or stock redemptions or repurchases,  or (iv) for any transaction from which the
director derived an improper  personal  benefit.  Article Ninth of the Company's
Certificate  of  Incorporation  eliminates  the  liability  of  directors to the
fullest extent permitted by Section  102(b)(7) of the DGCL. The DGCL permits the
purchase of insurance on behalf of directors and officers  against any liability

                                      II-1

asserted  against  directors  and  officers and incurred by such persons in such
capacity, or arising out of their status as such, whether or not the corporation
would have the power to indemnify directors and officers against such liability.
The Company has acquired  officers'  and  directors'  liability  insurance of $5
million  for  members  of its Board of  Directors  and  executive  officers.  In
addition, the Company has entered into agreements to indemnify its directors and
officers.

         At  present,  there  is  no  pending  litigation  or  other  proceeding
involving a director or officer of the  Company as to which  indemnification  is
being sought,  nor is the Company aware of any  threatened  litigation  that may
result in claims for indemnification by any officer or director.

         Article Seventh of the Company's Restated  Certificate of Incorporation
and Section 5 of Article V of the Company's By-laws provide for  indemnification
of directors and officers to the fullest extent  permitted by Section 145 of the
DGCL.























                                      II-2
<PAGE>


Item 16.  Exhibits

         (a)  The  exhibits  listed  below  have  been  filed  as  part  of this
Registration Statement.

         Exhibit No.                   Description of Exhibit
         -----------                   ----------------------
         3.1      -      Sixth Restated Certificate of Incorporation. (1)

         4.1      -      Specimen common stock certificate of the
                         Registrant. (1)

         4.2      -      Stock Purchase Agreement among the Company, C. Eugene
                         Ennis,  Douglas C. Nester,  Peter M. Duncan and the
                         Investors named therein dated November 9, 1993. (1)

         4.3      -      Series C Stock Purchase Agreement among the Company,
                         C. Eugene Ennis,  Douglas C. Nester, Peter M. Duncan
                         and the Investors named therein dated July 26, 1995.(1)

         4.4      -      Common  Stock  Subscription  Agreement  dated as of
                         June 3, 1998 by and among the  Company and the
                         purchasers named therein. (2)
   
         4.5*     -      Common Stock  Subscription  Agreement dated as of
                         August 21, 1998 by and among the Company and Santa Fe
                         Energy Resources, Inc.

         5.1**    -      Opinion of Kelley Drye & Warren LLP regarding legality.
    
         23.1     -      Consent of Kelley Drye & Warren LLP (included in
                         Exhibit 5.1).

         23.2**   -      Consent of Arthur Andersen LLP.

         23.3**   -      Consent of Ryder Scott Company.
   
         24.1***  -      Powers of Attorney executed by certain officers and
                         directors of the Registrant.
    
- --------------
*To be filed by Amendment.
**Filed herewith.
***Previously filed.

(1)      Previously  filed  as  an  exhibit  to  the  Registrant's  Registration
         Statement on Form S-1 (File No.  333-14473) and incorporated  herein by
         reference.

(2)      Previously  filed as an exhibit to the  Registrant's  Current Report on
         Form 8-K filed with the  Commission  on June 16, 1998 and  incorporated
         herein by reference.

Item 17.  Undertakings

         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  provisions  described  under  Item  15  above,  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 for such liabilities (other than the 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

                                      II-3
<PAGE>

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.

The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement to:

              (a) Include any prospectus required by Section 10(a)(3) of the
Securities Act;

              (b) Reflect in the  prospectus  any facts or events  arising after
the  effective  date  of  this  Registration   Statement  (or  the  most  recent
post-effective  amendment  thereof)  which,  individually  or in the  aggregate,
represent a fundamental change in the information set forth in this Registration
Statement; and

              (c) Include any material  information  with respect to the plan of
distribution  not  previously  disclosed in this  Registration  Statement or any
material change to such information in this Registration Statement.

         (2) That,  for the  purpose  of  determining  any  liability  under the
Securities Act, each such  post-effective  amendment 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.

         (3) To remove from registration by means of a post-effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

         The  undersigned  Registrant  hereby  undertakes  that, for purposes of
determining  any  liability  under  the  Securities  Act,  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 this
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-4
<PAGE>




                                   SIGNATURES
   
         Pursuant to the  requirements  of Section 13 or 15(d) of the Securities
Exchange  Act  of  1933,  as  amended,  the  Registrant  certifies  that  it has
reasonable  ground to believe that it meets all of the  requirements  for filing
this amendment on Form S-3 and has duly caused this Registration Statement to be
signed on its behalf by the  undersigned,  thereunto duly authorized in the City
of Houston, State of Texas, on October 30, 1998.
    
                                                 3DX TECHNOLOGIES INC.


                                                 By:/s/ Ronald P. Nowak
                                                 Ronald P. Nowak
                                                 Chief Executive Officer
   
         Pursuant to the requirements of the Securities Act of 1933, as amended,
this  Registration  Statement has been signed by the following persons on behalf
of the Company and in the capacities and on the dates indicated.
<TABLE>
<CAPTION>

         Signatures                   Title or Capacities                           Date
         ----------                   -------------------                           ----
<S>                             <C>                                         <C>

                    *              Chairman of the Board                        October 30, 1998
_____________________________
C. Eugene Ennis

/s/ Ronald P. Nowak                President and Chief Executive, and           October 30, 1998
Ronald P. Nowak                    Director (Principal Executive Officer)

/s/ Russell L. Allen               Chief Financial Officer (Principal           October 30, 1998
Russell L. Allen                   Financial Officer)

                   *               Director                                     October 30, 1998
______________________________
Jon W. Bayless

                   *               Director                                     October 30, 1998
______________________________
Charles E. Edwards

                   *               Director                                     October 30, 1998
______________________________
C.D. Gray

                   *               Director                                     October 30, 1998
______________________________
Douglas C. Williamson



        /s/ Russell L. Allen
   *By Russell L. Allen
      Attorney-in-fact
</TABLE>
    
                                      II-5

<PAGE>


                                INDEX TO EXHIBITS
<TABLE>
<CAPTION>


Exhibit           Description of Exhibit                                                                     Page
- -------           ----------------------                                                                     ----
<S>              <C>                                                                                     <C>

    3.1           Sixth Restated Certificate of Incorporation, as amended.(1)
    4.1           Specimen common stock certificate of the Registrant.(1)
    4.2           Stock Purchase  Agreement among the Company,  C. Eugene Ennis,
                  Douglas C.  Nester,  Peter M. Duncan and the  Investors  named
                  therein dated November 9, 1993. (1)
    4.3           Series C Stock  Purchase  Agreement  among the  Company,  C. Eugene  Ennis,  Douglas C.
                  Nester, Peter M. Duncan and the Investors named therein dated July 26, 1995. (1)
    4.4           Common Stock  Subscription  Agreement dated as of June 3, 1998 by and among the Company
                  and the purchasers named therein. (2)
    4.5*          Common  Stock  Subscription  Agreement  dated as of  August  21,  1998 by and among the
                  Company and the purchaser named therein.
    5.1**         Opinion of Kelley Drye & Warren LLP  regarding  the  legality of the  securities  being
                  offered.
    23.1          Consent of Kelley Drye & Warren LLP (included in Exhibit 5.1).
    23.2**        Consent of Arthur Andersen LLP.
    23.3**        Consent of Ryder Scott.
    24.1***       Powers of Attorney  executed by certain officers and directors of the Registrant.

</TABLE>

- -----------------
* To be filed by Amendment.
**Filed herewith.
***Previously filed.

(1)      Previously  filed  as  an  exhibit  to  the  Registrant's  Registration
         Statement on Form S-1 (File No.  333-14473) and incorporated  herein by
         reference.

(2)      Previously  filed as an exhibit to the  Registrant's  Current Report on
         Form 8-K filed with the  Commission  on June 16, 1998 and  incorporated
         herein by reference.





<PAGE>

                            Kelley Drye & Warren LLP
                                281 Tresser Blvd.
                           Stamford, Connecticut 06901



                                                    WRITER'S DIRECT LINE
                                                          (203) 351-8023

                                                         WRITER'S E-MAIL
                                              [email protected]



                                            October 30, 1998




3DX Technologies Inc.
12012 Wickchester, Suite 250
Houston, TX  77079

Dear Ladies and Gentlemen:

                  We have acted as Counsel to 3DX Technologies, Inc., a Delaware
corporation (the "Company"),  in connection with the proposed public offering of
shares (the "Shares") of the Company's common stock, $.01 per share (the "Common
Stock") as  described  in the  Registration  Statement  on Form S-3, as amended,
Registration No. 333-63119 (the  "Registration  Statement") filed by the Company
with the Securities and Exchange  Commission (the "Commission')  pursuant to the
Securities  Act  of  1933,  as  amended  (the  "Act"),  to  which  this  opinion
constitutes an exhibit.

                  We have examined the Company's  Certificate  of  Incorporation
and  By-laws,  each as  amended  to date;  minutes  of the  Company's  corporate
proceedings  through the date hereof, as made available to us by officers of the
Company;  the Stock Purchase  Agreement dated as of November 3, 1993 between the
Company and certain  investors;  the Series C Preferred Stock Purchase Agreement
dated as of July 26, 1995  between the Company and certain  investors;  a Common
Stock Subscription  Agreement dated June 3, 1998 between the Company and certain
investors;  the Common  Stock  Purchase  Agreement  dated as of August 21,  1998
between  the  Company  and  Santa Fe Energy  Resources,  Inc.,  or as  permitted
transferees  of persons who so acquired  such  Shares;  an executed  copy of the
Registration  Statement  and all  exhibits  thereto  in the form  filed with the
Commission,  and such  matters of law  deemed  necessary  by us to  deliver  the
opinions set forth herein. In the course of our examination, we have assumed the
genuineness  of all  signatures,  the  authority of all  signatories  to sign on
behalf of their principals,  if any, the authenticity of all documents submitted
to us as original  documents  and the  conformity  to original  documents of all
documents  submitted  to us as certified or  photostatic  copies.  As to certain
factual matters, we have relied upon information  furnished to us by officers of
the Company.

                  Based on the foregoing,  and solely in reliance thereon, it is
our  opinion  that the Shares have been duly  authorized  and fully paid and are
non-assessable.

                  We hereby  consent to the filing of this opinion as an exhibit
to the Registration Statement and to the reference to our firm in the Prospectus
included therein under the caption "Legal  Matters." In giving such consent,  we
do not admit that we are in the  category of persons  whose  consent is required
under Section 7 of the Act.

                                                 Very truly yours,

                                                 KELLEY DRYE & WARREN LLP

                                                 By:/s/ Jay R. Schifferli
                                                      A Member of the Firm



<PAGE>



                                                            EXHIBIT 23.2


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


         As independent public accountants,  we hereby consent to the use of our
reports  and to all  references  to our Firm  included in or made a part of this
registration statement.


                                                     ARTHUR ANDERSEN LLP


October 30, 1998
Houston, Texas



<PAGE>

                          [LETTERHEAD OF RYDER SCOTT]

                                                             EXHIBIT 23.3


                   CONSENT OF INDEPENDENT PETROLEUM ENGINEERS


         We hereby consent to (a) the use of our name and references to our Firm
in this  Amendment to  Registration  Statement on Form S-3 for 3DX  Technologies
Inc. and (b) the incorporation by reference in this Amendment to Registration on
Form S-3 of all reports of our Firm  included in or made part of this  Amendment
to Registration Statement on Form S-3 for 3DX Technologies Inc.


                                                     RYDER SCOTT COMPANY
                                                     PETROLEUM ENGINEERS


Houston, Texas
October 30, 1998




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