PATINA OIL & GAS CORP
10-Q, 1996-08-14
CRUDE PETROLEUM & NATURAL GAS
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                                    FORM 10-Q

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

(Mark One)

[X]      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
         SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended    June 30, 1996

                                       OR

[  ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
         SECURITIES EXCHANGE ACT OF 1934

For the transition period from                          to

            ---------------------------------------------------------

                         Commission file number 1-14344

                          PATINA OIL & GAS CORPORATION

                               Delaware 75-2629477
                (State or other jurisdiction of (I.R.S. Employer
               incorporation or organization) Identification No.)

                      1625 Broadway, Denver, Colorado 80202
               (Address of principal executive offices) (Zip Code)

(Registrant's telephone number, including area code)     (303)389-3600

- -------------------------------------------------------------------------------

     (Former name,  former address and former fiscal year, if changed since last
report.)

         Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. Yes X No .

     There were 19,866,012  Common Shares  outstanding as of August 13, 1996, of
which 2,000,000 are designated as Series A Common Shares.

<PAGE>
PART I.  FINANCIAL INFORMATION

     Patina Oil & Gas Corporation  (the  "Company") was  incorporated in January
1996 to hold the assets and operations of Snyder Oil Corporation ("SOCO") in the
Wattenberg  Field  and  to  facilitate  the  acquisition  of  Gerrity  Oil & Gas
Corporation ("GOG"). Previously, SOCO's Wattenberg operations had been conducted
through  SOCO  or its  wholly  owned  subsidiary,  SOCO  Wattenberg  Corporation
("SWAT").  On May 2, 1996, SOCO contributed the balance of its Wattenberg assets
to SWAT and  transferred  all of the shares of SWAT to the Company.  Immediately
thereafter, GOG merged into another wholly owned subsidiary of the Company ("the
Merger").  As a result of these  transactions,  SWAT and GOG became wholly owned
subsidiaries  of the  Company.  The  results of  operations  of the  Company for
periods prior to the Merger reflected in these financial statements include only
the historical results of SOCO's Wattenberg operations.

     The financial  statements  included herein have been prepared in conformity
with generally accepted accounting principles.  The statements are unaudited but
reflect all adjustments  which,  in the opinion of management,  are necessary to
fairly present the Company's financial position and results of operations.

                                        2
<PAGE>
<TABLE>
<CAPTION>

                          PATINA OIL & GAS CORPORATION

                           CONSOLIDATED BALANCE SHEETS
                                 (In thousands)
                              
                                                                                  December 31,        June 30, 
                                                                                      1995              1996
                                                                               --------------    --------------
                                                                                                     (Unaudited)
                                                          ASSETS
<S>                                                                            <C>               <C>
Current assets
     Cash and equivalents                                                       $       1,000     $      13,213
     Accounts receivable                                                                6,611            18,907
     Inventory and other                                                                2,000             2,958
                                                                                -------------     -------------
                                                                                        9,611            35,078
                                                                                -------------     -------------
Oil and gas properties, successful efforts method                                     333,513           551,473
     Accumulated depletion, depreciation and amortization                            (118,919)         (136,861)
                                                                                -------------     -------------
                                                                                      214,594           414,612
                                                                                -------------     -------------
Gas facilities and other                                                                4,775             5,922
     Accumulated depreciation                                                          (4,459)           (4,627)
                                                                                -------------     --------------
                                                                                          316             1,295
                                                                                -------------     -------------

Other assets, net                                                                          -              4,490
                                                                                -------------     -------------
                                                                                  $   224,521       $   455,475
                                                                                =============     =============
                                       LIABILITIES AND STOCKHOLDERS' EQUITY

  Current liabilities
     Accounts payable                                                            $      3,852       $    15,065
     Accrued liabilities                                                                  415            10,362
     Payable to parent                                                                  5,344             4,329
                                                                                 ------------       -----------
                                                                                        9,611            29,756
                                                                                 ------------       -----------

Senior debt                                                                                 -           116,296
Senior subordinated notes                                                                   -           104,617
Debt to parent                                                                         75,000                 -
Other noncurrent liabilities                                                           26,247             3,527

Preferred stock of subsidiary                                                              -              9,729
Commitments and contingencies

Stockholders' equity
     Preferred stock, $.01 par, 5,000,000 shares
         authorized, -0- and 1,204,847 shares issued
         and outstanding                                                                  -                  12
     Common stock, $.01 par, 40,000,000 shares
         authorized, 14,000,000 and 19,866,012 shares
          issued and outstanding                                                          140               199
     Capital in excess of par value                                                       -             193,378
     Investment by parent                                                             113,523                -
     Retained earnings (deficit)                                                          -              (2,039)
                                                                                 ------------        -----------
                                                                                      113,663           191,550
                                                                                 ------------        ----------
                                                                                  $   224,521       $   455,475
                                                                                 ============       ===========

                      The accompanying notes are an integral part of these statements.
</TABLE>

                                                     3
<PAGE>
<TABLE>
<CAPTION>
                                           PATINA OIL & GAS CORPORATION

                                       CONSOLIDATED STATEMENTS OF OPERATIONS
                                       (In thousands except per share data)


                                                  Three Months             Six Months
                                                  Ended June 30,          Ended June 30,
                                                 ----------------       -------------------
                                                 1995        1996       1995           1996
                                                               (Unaudited)
  <S>                                          <C>          <C>        <C>          <C>    
Revenues
     Oil and gas sales                          $ 12,887    $ 19,182    $ 27,148    $ 29,816
     Other                                             3         274          29         294
                                                --------    --------    --------    --------
                                                  12,890      19,456      27,177      30,110
                                                --------    --------    --------    --------

Expenses
     Direct operating                              2,503       3,446       4,766       5,401
     Exploration                                      41          81         139         149
     General and administrative                    1,323       1,570       3,542       3,113
     Interest and other                            1,351       3,732       2,769       4,979
     Depletion, depreciation and amortization      8,331      11,756      16,951      18,723
                                                --------    --------    --------     -------

Income (loss) before taxes                          (659)     (1,129)       (990)     (2,255)
                                                --------    --------   ---------     -------

Provision (benefit) for income taxes
     Current                                           -         -          -             -
     Deferred                                       (231)        -          (347)       (394)
                                                 --------   --------   ---------    --------
                                                    (231)        -          (347)       (394)
                                                 --------   --------   ---------    --------

Net income (loss)                               $   (428)   $ (1,129)   $   (643)   $ (1,861)
                                                ========    ========    ========    ========

Net income (loss) per common share              $   (.03)   $   (.10)   $   (.05)   $   (.16)
                                                ========    ========    ========    ========

Weighted average shares outstanding               14,000      17,919      14,000      15,959
                                                ========    ========    ========     =======

                         The accompanying notes are an integral part of these statements.

</TABLE>

                                                   4
<PAGE>
<TABLE>
<CAPTION>
                                           PATINA OIL & GAS CORPORATION

                                       CONSOLIDATED STATEMENTS OF CHANGES IN
                                               STOCKHOLDERS' EQUITY
                                                  (In thousands)

                                         Preferred Stock       Common Stock      Capital in                  Retained
                                       ------------------     ---------------    Excess of    Investment     Earnings
                                       Shares      Amount     Shares    Amount   Par Value    By Parent     (Deficit)
                                       ------      -----      ------    -----    ---------    ----------    --------
<S>                                   <C>     <C>           <C>       <C>          <C>          <C>           <C>          
Balance, December 31, 1994               -     $    -        14,000    $     140   $   -      $ 115,706    $    -

Credit in lieu of taxes                  -          -          -           -           -          1,107         -

Change in investment by parent           -          -          -           -           -         (1,196)        -

Net loss                                 -          -          -           -           -         (2,094)        -
                                   ---------   ---------  ---------   ----------   ---------  ---------   ---------

Balance, December 31, 1995               -          -        14,000          140       -        113,523         -

Credit in lieu of taxes                  -          -          -           -           -            171         -

Change in investment by parent           -          -          -           -           -         (7,514)        -

Net loss through the Merger date         -          -          -           -           -           (532)        -

Merger                                  1,205       12        6,000           60    194,291    (105,648)        -

Issuance of common                       -          -             1         -             9           -         -

Repurchase of common                     -          -          (135)          (1)      (922)          -         -

Preferred dividends                      -          -          -           -           -              -         (710)

Net loss subsequent to the Merger
    date                                 -          -          -           -           -              -       (1,329)
                                   ---------  ----------   ---------   ---------   ----------    --------   ---------
Balance, June 30, 1996
         (Unaudited)                  1,205   $      12      19,866    $     199   $ 193,378     $    -     $ (2,039)
                                   ========   ==========   =========   =========   ==========    ========   =========


                       The accompanying notes are an integral part of these statements.
</TABLE>
                                                  5
<PAGE>
<TABLE>
<CAPTION>

                                           PATINA OIL & GAS CORPORATION

                                       CONSOLIDATED STATEMENTS OF CASH FLOWS
                                                  (In thousands)




                                                                    Six Months Ended June 30,
                                                                     -------------------------
                                                                        1995         1996
                                                                       ------        ----
                                                                           (Unaudited)
<S>                                                                 <C>         <C>
Operating activities
     Net loss                                                       $   (643)   $ (1,861)
     Adjustments to reconcile net loss to net
         cash provided by operations
              Exploration expense                                        139         149
              Depletion, depreciation and amortization                16,951      18,723
              Deferred taxes                                            (347)       (394)
              Amortization of deferred credits                          (860)       (646)
              Changes in current and other assets and liabilities
                  Decrease in
                      Accounts receivable                              1,605       1,384
                      Inventory and other                               --           102
                  Increase (decrease) in
                      Accounts payable                               (11,647)     (5,052)
                      Accrued liabilities                                357       1,504
                      Other liabilities                                 --         1,059
                                                                    ---------   --------

              Net cash provided by operations                          5,555      14,968
                                                                    --------    --------

Investing activities
     Acquisition, development and exploration                        (18,613)     (1,375)
     Merger expenditures, net of cash acquired                           --       (1,040)

                                                                    ---------   --------
              Net cash used by investing                             (18,613)     (2,415)
                                                                    ---------   --------
Financing activities
     Increase (decrease) in payable/debt to parent                     4,331     (78,615)
     Increase (decrease) in indebtedness                              (4,333)     96,108
     Deferred credits                                                  1,402         624
     Change in investment by parent                                   11,658      (7,514)
     Cost of common stock issuance                                      --        (9,310)
     Repurchase of common stock                                         --          (923)
     Preferred dividends                                                --          (710)
                                                                    --------    ---------

              Net cash realized (used) by financing                   13,058        (340)
                                                                    --------    --------

Increase in cash                                                        --        12,213
Cash and equivalents, beginning of period                              1,000       1,000
                                                                    --------    --------
Cash and equivalents, end of period                                 $  1,000    $ 13,213
                                                                    ========    ========


        The accompanying notes are an integral part of these statements.
</TABLE>
                                        6
<PAGE>

                          PATINA OIL & GAS CORPORATION

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



(1)    ORGANIZATION AND NATURE OF BUSINESS

     Patina Oil & Gas Corporation (the "Company"),  a Delaware corporation,  was
incorporated in January 1996 to hold all of the assets of Snyder Oil Corporation
("SOCO") in the Wattenberg  Field and to facilitate  the  acquisition of Gerrity
Oil & Gas Corporation ("GOG"). Previously, SOCO's Wattenberg operations had been
conducted  through  SOCO  or  its  wholly  owned  subsidiary,   SOCO  Wattenberg
Corporation  ("SWAT").  On May 2,  1996,  SOCO  contributed  the  balance of its
Wattenberg  assets  to SWAT and  transferred  all of the  shares  of SWAT to the
Company. Immediately thereafter, GOG merged into another wholly owned subsidiary
of the Company (the "Merger").  As a result of these transactions,  SWAT and GOG
became  wholly owned  subsidiaries  of the  Company.  The  Company's  operations
currently consist of the acquisition, development, production and exploration of
oil and gas properties in the Wattenberg Field.

     SOCO  owns  approximately  70% of the  common  stock  of  the  Company.  In
conjunction  with the Merger,  the Company  offered to  exchange  the  Company's
preferred  stock for GOG's preferred stock (the "Original  Exchange  Offer").  A
total of 1,204,847 shares were issued in exchange for approximately 75% of GOG's
preferred  stock.  Subsequent  to quarter  end,  the Company  announced  that it
intended  to amend  GOG's  certificate  of  incorporation  to  provide  that all
remaining  shares of GOG's  preferred stock would be exchanged for the Company's
preferred  stock based on the same terms as the  Original  Exchange  Offer.  The
expected  dividend  payments  resulting  from this exchange have been accrued at
June 30, 1996. Upon consummation of this second exchange, the Company expects to
have approximately 1.6 million preferred shares outstanding.

     The above transactions were accounted for as a purchase of GOG. The amounts
and results of the Company for periods  prior to the Merger  reflected  in these
financial  statements  include  the  historical  amounts  and  results of SOCO's
Wattenberg operations.  Certain amounts in the accompanying financial statements
have been allocated in a reasonable and consistent manner in order to depict the
historical  financial  position,  results  of  operations  and cash flows of the
Company on a stand-alone basis prior to the Merger.

(2)    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Risks and Uncertainties

       Historically,  the  market  for oil and gas has  experienced  significant
price  fluctuations.  Prices for natural gas in the Rocky  Mountain  region have
traditionally been particularly  volatile and have been depressed since 1994. In
large  part,  the  decreased  prices are the result of mild  weather,  increased
production in the region and limited transportation capacity to other regions of
the country.  Increases or decreases in prices received could have a significant
impact on the Company's future results of operations.

       The  preparation  of financial  statements 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 those estimates.

Producing Activities

       The Company utilizes the successful  efforts method of accounting for its
oil and gas  properties.  Consequently,  leasehold  costs are  capitalized  when
incurred.   Unproved  properties  are  assessed   periodically  within  specific
geographic  areas and  impairments in value are charged to expense.  Exploratory
expenses,  including  geological and geophysical expenses and delay rentals, are
charged  to  expense  as  incurred.  Exploratory  drilling  costs are  initially
capitalized,  but  charged to expense if and when the well is  determined  to be
unsuccessful.  Costs of productive wells,  unsuccessful  developmental wells and
productive  leases are capitalized and amortized on a  unit-of-production  basis
over the life of

                                                         7
<PAGE>
the  remaining  proved or  proved  developed  reserves,  as  applicable.  Gas is
converted to equivalent  barrels at the rate of 6 Mcf to 1 barrel.  Amortization
of capitalized costs has generally been provided over the entire DJ Basin as the
wells are  located  in the same  reservoir.  The  Company  expects to review the
appropriateness  of this policy in the second half of 1996.  No accrual has been
provided for estimated  future  abandonment  costs as management  estimates that
salvage value will approximate such costs.

       During the fourth  quarter of 1995,  the  Company  adopted  Statement  of
Financial  Accounting  Standards  No.  121  ("SFAS  121"),  "Accounting  for the
Impairment of Long-Lived  Assets and for  Long-Lived  Assets to Be Disposed Of".
SFAS  121  requires  the  Company  to  assess  the  need  for an  impairment  of
capitalized  costs of oil and gas properties on a field-by-field  basis.  During
the six months ended June 30, 1995 and 1996, the Company did not provide for any
impairments.  Changes in the underlying  assumptions or the  amortization  units
could, however, result in impairments in the future.

       Other assets reflect the value assigned to a noncompete agreement entered
into as part of the Merger.  The value is being  amortized  over five years at a
rate  intended  to  approximate  the  decline  in the  value  of the  agreement.
Amortization  expense  for the two  months  ended  June 30,  1996 was  $640,000.
Scheduled  amortization  for the next five years is $1,924,000 for the remainder
of 1996,  $1,540,000 in 1997, $513,000 in 1998, and $257,000 in each of 1999 and
2000.

Gas Imbalances

       The Company  uses the sales method to account for gas  imbalances.  Under
this method,  revenue is recognized  based on the cash received  rather than the
Company's  proportionate  share of gas produced.  Gas imbalances at December 31,
1995 and June 30, 1996 were insignificant.

Financial Instruments

       The book value and estimated fair value of cash and  equivalents was $1.0
million and $13.2 million at December 31, 1995 and June 30, 1996. The book value
approximates fair value due to the short maturity of these instruments. The book
value and estimated  fair value of the Company's  debt to parent and senior debt
combined was $75.0 million and $116.3  million at December 31, 1995 and June 30,
1996.  The fair  value is  presented  at face  value  given  its  floating  rate
structure. The book value of the senior subordinated notes was $104.6 million at
June 30, 1996.  The estimated  fair value was $104.1  million at that date.  The
fair value is estimated based on their price on the New York Stock Exchange.

Other

       All liquid  investments with an original maturity of three months or less
are considered to be cash equivalents.

       All cash  payments  for  income  taxes  were made by SOCO  during the six
months  ended June 30,  1995 and  through May 2, 1996 at which point the Company
began paying its own taxes. The Company was charged interest by SOCO on its debt
to SOCO of $2.7  million and $1.6 million for the six months ended June 30, 1995
and 1996, which was reflected as an increase in debt to SOCO.

       Certain amounts in prior periods  consolidated  financial statements have
been reclassified to conform with current classification.

       In  the  opinion  of  management,  those  adjustments  to  the  financial
statements  (all of which are of a normal and  recurring  nature)  necessary  to
present fairly the financial  position and results of operations have been made.
These  interim  financial  statements  should  be read in  conjunction  with the
Company's Proxy  Statement/Prospectus  dated April 2, 1996 (SEC Registration No.
333-572).

                                        8
<PAGE>
(3)    OIL AND GAS PROPERTIES

       The cost of oil and gas properties at December 31, 1995 and June 30, 1996
includes no  significant  unevaluated  leasehold.  Acreage is generally held for
exploration,  development  or resale and its value,  if any,  is  excluded  from
amortization.  The following table sets forth costs incurred  related to oil and
gas properties.
<TABLE>
<CAPTION>
                                                     Six
                                     Year Ended   Months Ended
                                     December 31,  June 30,
                                       1995          1996
                                   ------------  -------------
                                         (In thousands)

                       <S>           <C>       <C>     
                       Acquisition   $    650   $218,297
                       Development     12,141        736
                       Exploration        416        149
                       Other               13         47
                                    ---------   --------
                                     $ 13,220   $219,229
                                    =========   ========
</TABLE>
       On May 2,  1996,  the Merger  discussed  in Note 1 was  consummated.  The
following  table  summarizes  the  unaudited  pro forma effects on the Company's
financial  statements  assuming that the Merger and the Exchange  Offer had been
consummated on January 1, 1995 and 1996. Future results may differ substantially
from pro forma results due to changes in these  assumptions,  changes in oil and
gas  prices,  production  declines  and  other  factors.  Therefore,  pro  forma
statements cannot be considered indicative of future operations.
<TABLE>
<CAPTION>
                                                                 Six Months Ended June 30,
                                                                 ------------------------
                                                                     1995          1996
                                                                    --------   ---------
                                                               (In thousands, except per share data)
                        <S>                                        <C>         <C>     
                        Total revenues                             $ 56,560    $ 47,060
                        Depletion, depreciation and amortization   $ 32,443    $ 37,756
                        Production direct operating margin         $ 45,585    $ 27,945
                        Net income (loss)                          $   (884)   $ (3,653)
                        Net income (loss) per common share         $   (.12)   $   (.25)
                        Weighted average shares outstanding          20,000      20,000
                        Production volume (MBOE)                      5,146       3,684

</TABLE>
(4)    INDEBTEDNESS

       The following indebtedness was outstanding on the respective dates:
<TABLE>
<CAPTION>
                                            December 31,    June 30,
                                               1995           1996
                                            -----------     ---------
                                                  (In thousands)
                <S>                         <C>             <C>
                Bank credit facilities      $    -          $116,296
                Less current portion             -                 -
                                            --------        --------
                     Senior debt, net       $    -          $116,296
                                            ========        ========

                Senior subordinated notes   $    -          $104,617
                                            ========        ========

                Debt to parent              $ 75,000        $      -
                                            ========        ========
</TABLE>
       Simultaneously  with the Merger,  the Company  entered into a bank credit
agreement.  The agreement consists of (a) a facility provided to the Company and
SOCO Wattenberg (the "Company Facility") and (b) a facility provided to GOG (the
"GOG Facility").
                                        9
<PAGE>
       The Company Facility  consists of a term loan facility (the "Company Term
Facility") in an amount up to $87 million and a revolving  credit  facility (the
"Company  Revolving  Facility") in an aggregate  amount up to $102 million.  The
Company Term  Facility  will be available to fund loans from Patina  and/or SOCO
Wattenberg  to GOG (the  "Intercompany  Loan") to finance  purchases  of the GOG
11.75% Senior  Subordinated  Notes until the first anniversary of the Merger. At
June 30,  1996,  the Company had not utilized  the Company  Term  Facility.  The
amount  available for  borrowing  under the Company  Revolving  Facility will be
limited to a semiannually  adjusted  borrowing base that equaled $102 million at
June 30, 1996. At June 30, 1996, $81.8 million was outstanding under the Company
Revolving Facility.

       The GOG Facility is a revolving credit facility in an aggregate amount up
to $51 million.  The amount  available for borrowing under the GOG Facility will
be limited to a fluctuating  borrowing base that equaled $51 million at June 30,
1996. At June 30, 1996,  $34.5 million was  outstanding  under the GOG Facility.
The GOG Facility was used  primarily to  refinance  GOG's  previous  bank credit
facility and pay costs associated with the Merger.

       The  borrowers  may elect that all or a portion of the credit  facilities
bear  interest  at a rate per annum  equal to:  (i) the higher of (a) prime rate
plus a margin  equal to .25% with  respect to the GOG  Facility  and the Company
Revolving  Facility and .75%  increasing by 1% on the first  anniversary  of the
Merger and by .5% every six months  thereafter  with respect to the Company Term
Facility (the "Applicable Margin") and (b) the Federal Funds Effective Rate plus
 .5% plus the Applicable  Margin,  or (ii) the rate at which eurodollar  deposits
for one, two, three or six months (as selected by the  applicable  borrower) are
offered in the interbank  eurodollar  market in the  approximated  amount of the
requested  borrowing (the "Eurodollar Rate") plus 1.25%, with respect to the GOG
Facility and the Company  Revolving  Facility,  and 1.5% increasing by 1% on the
first  anniversary  of the Merger and by .5% every six  months  thereafter  with
respect to the Company  Term  Facility  (the  "Eurodollar  Margin").  During the
period subsequent to the Merger through June 30, 1996, the average interest rate
under the facilities approximated 7.0%.

       The bank credit agreement contains certain financial covenants, including
but not limited to a maximum total debt to capitalization ratio, a maximum total
debt to EBITDA ratio and a minimum current ratio. The bank credit agreement also
contains certain negative  covenants,  including but not limited to restrictions
on indebtedness;  certain liens;  guaranties,  speculative derivatives and other
similar obligations; asset dispositions; dividends, loans and advances; creation
of subsidiaries;  investments; leases; acquisitions;  mergers; changes in fiscal
year;  transactions  with affiliates;  changes in business  conducted;  sale and
leaseback and operating lease transactions;  sale of receivables;  prepayment of
other indebtedness;  amendments to principal documents; negative pledge clauses;
issuance of securities; and non-speculative commodity hedging.

       Simultaneously  with the Merger,  the Company  recorded  $100  million of
Senior  Subordinated  Notes due July 15, 2004 issued by GOG on July 1, 1994.  In
connection with the Merger,  the Company  repurchased $1.2 million of the notes.
As part of the purchase  accounting,  the remaining notes have been reflected in
the  accompanying  financial  statements at a market value of $104.6  million or
105.875% of their principal amount. Interest is payable each January 15 and July
15. The Notes are  redeemable  at the option of GOG, in whole or in part, at any
time on or after July 15, 1999, initially at 105.875% of their principal amount,
declining to 100% on or after July 15, 2001.  Upon the occurrence of a change of
control,  as defined in the Notes,  GOG would be  obligated  to make an offer to
purchase  all  outstanding  Notes  at a price  of 101% of the  principal  amount
thereof. In addition, GOG would be obligated,  subject to certain conditions, to
make offers to purchase  Notes with the net cash proceeds of certain asset sales
or other  dispositions  of  assets  at a price of 101% of the  principal  amount
thereof. The Notes are unsecured general obligations of GOG and are subordinated
to all senior indebtedness of GOG and to any existing and future indebtedness of
GOG's subsidiaries.

       The Notes contain  covenants that, among other things,  limit the ability
of GOG to incur additional indebtedness,  pay dividends,  engage in transactions
with shareholders and affiliates,  create liens, sell assets,  engage in mergers
and   consolidations   and  make   investments  in  unrestricted   subsidiaries.
Specifically,  the Notes restrict GOG from incurring indebtedness  (exclusive of
the Notes) in excess of approximately $51 million, if after giving effect to the
incurrence of such  additional  indebtedness  and the receipt and application of
the proceeds  therefrom,  GOG's  interest  coverage  ratio is less than 2.5:1 or
adjusted  consolidated  net tangible  assets is less than 150% of the  aggregate
indebtedness  of GOG. GOG currently  does not meet the interest  coverage  ratio
necessary to incur indebtedness in excess of approximately $51 million primarily
as a result of lower than anticipated commodity prices.

                                       10
<PAGE>
       Prior to the Merger,  SOCO  financed all of the Company's  activities.  A
portion of such  financing  was  considered to be an investment by parent in the
Company with the remaining portion being considered Debt to parent.  The portion
considered  to  be  Debt  to  parent  versus  an  investment  by  parent  was  a
discretionary percentage determined by SOCO after consideration of the Company's
internally generated cash flows and level of capital expenditures. Subsequent to
the Merger, the $75 million debt to parent was paid in full and the Company does
not expect SOCO to provide any additional funding.

       On the  portion  of such  financing  which was  considered  to be Debt to
parent,  interest  was charged by SOCO to the  Company.  The Company was charged
interest on the debt  payable to SOCO at a rate which  approximated  the average
interest rate being paid by SOCO under its revolving  credit  facility (7.0% and
6.4% for 1995 and the six months ended June 30, 1996).

       Scheduled maturities of indebtedness for the next five years are zero for
the remainder of 1996,  1997 and 1998,  $116.3 million in 1999 and zero in 2000.
The long-term  portion of the credit facilities are scheduled to expire in 1999;
however,  it is management's  intent to review both the short-term and long-term
facilities and extend the maturities on a regular basis.

     Cash payments for interest were zero and  $649,000,  respectively,  for the
six months ended June 30, 1995 and 1996.

(5)    STOCKHOLDERS' EQUITY

       A total of 40 million  common shares,  $.01 par value,  are authorized of
which 19.9 million  were issued and  outstanding  at June 30, 1996.  The Company
issued 6.0 million  shares in exchange for all of the  outstanding  stock of GOG
upon  consummation of the Merger.  Of the 19.9 million shares  outstanding,  2.0
million are  designated as Series A Common  Stock.  The Series A Common Stock is
identical to the common shares except that the Series A Common Stock is entitled
to three  votes per share  rather  than one vote per share.  The Series A Common
Stock is owned by SOCO  and  reverts  to  regular  common  shares  upon  certain
conditions.  During the second  quarter 1996,  the Company  repurchased  135,000
shares  of  common  stock  for  $923,000.  No  dividends  have  been paid on the
Company's common stock as of June 30, 1996.

       A total of 5 million preferred shares,  $.01 par value, are authorized of
which 1.2 million were issued and outstanding at June 30, 1996. In May 1996, 1.2
million  shares of 7.125%  preferred  stock were issued to certain GOG preferred
shareholders  electing to exchange their  preferred  shares in an exchange offer
related to the consummation of the Merger.  Thus there were no proceeds received
related to this issuance. The stock is convertible into common stock at any time
at $8.61 per share.  The 7.125%  preferred  stock is redeemable at the option of
the  Company at any time after May 2, 1998 if the average  closing  price of the
Patina  common  stock  for 20 of the 30 days  prior to not less  than  five days
preceding  the  redemption  date is greater than $12.92 per share or at any time
after May 2, 1999. The liquidation preference is $25 per share, plus accrued and
unpaid dividends.  The Company paid $536,000 ($1.78 per 7.125% convertible share
per annum) in preferred  dividends during the six months ended June 30, 1996 and
had accrued an additional $528,000 at June 30, 1996 for dividends.

       In 1996,  the  shareholders  adopted a stock  option  plan for  employees
providing for the issuance of options at prices not less than fair market value.
Options to acquire up to three million shares of common stock may be outstanding
at any given time. The specific terms of grant and exercise are  determinable by
a committee of independent members of the Board of Directors. A total of 512,000
options were issued in May 1996. The options vest over a three-year period (30%,
60%, 100%) and expire five years from date of grant.

       In 1996,  the  shareholders  adopted a stock  grant and option  plan (the
"Directors'  Plan") for  non-employee  Directors of the Company.  The Directors'
Plan provides for each  non-employee  Director to receive common shares having a
market value equal to $2,250 quarterly in payment of one-half their retainer.  A
total of 1,412  shares  were  issued in June 1996.  It also  provides  for 5,000
options to be granted annually to each non-employee  Director. A total of 20,000
options were issued in May 1996. The options vest over a three-year period (30%,
60%, 100%) and expire five years from date of grant.

                                       11
<PAGE>
       Earnings  per share are  computed by  dividing  net income  (loss),  less
dividends on preferred stock, by weighted average common shares outstanding. Net
income  (loss)  available  to common for the six months  ended June 30, 1995 and
1996, was  $(643,000)  and $(2.6)  million,  respectively.  Differences  between
primary and fully diluted earnings per share were  insignificant for all periods
presented.

(6)    FEDERAL INCOME TAXES

       Prior to the Merger,  the Company had been  included in the tax return of
SOCO.  Current  and  deferred  income  tax  provisions  allocated  by SOCO  were
determined as though the Company  filed as an  independent  company,  making the
same tax return elections used in SOCO's consolidated return.  Subsequent to the
Merger, the Company will not be included in the tax return of SOCO.

       A reconciliation of the statutory rate to the Company's effective rate as
they  apply to the  benefit  for the six  months  ended  June 30,  1995 and 1996
follows:
<TABLE>
<CAPTION>

                                                          Six Months Ended June 30,
                                                          ------------------------
                                                               1995        1996
                                                            ---------    --------
<S>                                                            <C>         <C>
Federal statutory rate                                         (35%)       (35%)
Loss in excess of net deferred tax liability                      -         18%
                                                               -----       -----
Effective income tax rate                                      (35%)       (17%)
                                                               =====       =====
</TABLE>

         For  tax  purposes,   the  Company  had  regular  net  operating   loss
carryforwards of $44.9 million and alternative minimum tax loss carryforwards of
$3.2 million at December 31, 1995. These  carryforwards  expire between 2005 and
2009.  No cash  payments  were made by the Company for federal taxes during 1994
and 1995. As discussed in Note 1, the accompanying  financial statements include
certain Wattenberg  operations  previously owned directly by SOCO.  Accordingly,
certain operating losses generated by these properties were retained by SOCO. In
addition,  certain taxable income generated by SOCO did not offset the Company's
net operating loss carryforwards. The effect of such items has been reflected as
a charge or credit in lieu of taxes in the  Company's  statement  of  changes in
stockholder's equity.

(7)      MAJOR CUSTOMERS

         During the six months ended June 30, 1995 and 1996,  Associated Natural
Gas, Inc.  accounted for 54% and 59%, Amoco Production Company accounted for 22%
and  19%,  and  Total   Petroleum   accounted  for  17%  and  14%  of  revenues,
respectively.  Management  believes  that the loss of any  individual  purchaser
would not have a long-term  material adverse impact on the financial position or
results of operations of the Company.

(8)      DEFERRED CREDITS

         In 1992,  the Company  formed a partnership  to monetize its Section 29
tax credits.  Through May 1996, a revenue increase of more than $.40 per Mcf was
realized on  production  volumes from  qualified  Section 29  properties in this
arrangement. The Company recognized $860,000 and $646,000 of this revenue during
the six months  ended June 30,  1995 and 1996,  respectively.  In May 1996,  the
Company  terminated  the  partnership  and  simultaneously  entered  into  a new
agreement to monetize Section 29 tax credits. The new agreement provides for the
Company  to  receive  proceeds  from  Section  29  tax  credits  via a  variable
production  payment.  As a result,  this  arrangement  is  expected  to increase
revenue by more than $.40 per Mcf through 2002. Subsequent to June 30, 1996, the
Company  negotiated an agreement whereby  additional Section 29 tax credits will
be monetized under this same type of structure.

(9)      RELATED PARTY

         Prior to the  Merger,  the  Company  did not  have  its own  employees.
Employees,  certain  office space and  furniture,  fixtures and  equipment  were
provided by SOCO.  SOCO  allocated  general and  administrative  expenses to the
Company based on its estimate of expenditures incurred on behalf of the Company.
Subsequent to the Merger, certain field,  administrative and executive employees
of SOCO and GOG became  employees of the Company.  SOCO will continue to provide
certain services to Patina under a corporate services agreement.

                                       12
<PAGE>
(10)     COMMITMENTS AND CONTINGENCIES

         In August 1995,  SOCO was sued in the United States  District  Court of
Colorado by seven  plaintiffs  purporting  to represent  all persons who, at any
time since January 1, 1960, have had agreements providing for royalties from gas
production  in  Colorado  to be paid by SOCO  under a number  of  various  lease
provisions.  Substantially  all  liability  under this suit has been  assumed by
Patina.  In January  1996,  GOG was also sued in a similar but  separate  action
filed  in the  District  Court in and for the City and  County  of  Denver.  The
plaintiffs,  in both  suits,  allege  that  the  companies  improperly  deducted
unspecified   "post-production"   costs  incurred  by  the  companies  prior  to
calculating royalty payments in breach of the relevant lease provisions and that
the  companies  fraudulently  concealed  that  fact  from  the  plaintiffs.  The
plaintiffs seek unspecified  compensatory and punitive damages and a declaratory
judgment that the companies  are not permitted to deduct  post-production  costs
prior to calculating  royalties paid to the class.  SOCO, Patina and GOG believe
that costs deducted in calculating  royalties are and have been proper under the
relevant lease provisions, and they intend to defend these and any similar suits
vigorously.  At this  time,  the  Company  is  unable to  estimate  the range of
potential loss, if any, from this uncertainty. However, the Company believes the
resolution of this  uncertainty  should not have a material  adverse effect upon
the  Company's  financial  position,  although  an  unfavorable  outcome  in any
reporting  period  could  have a  material  impact on the  Company's  results of
operations for that period.

     In March 1996, a complaint was filed in the Court of Chancery for the State
of Delaware against GOG and each of its directors,  Brickell Partners v. Gerrity
Oil & Gas Corporation, C.A. No. 14888 (Del. Ch.). The complaint alleges that the
"action is brought (a) to restrain the  defendants  from  consummating  a merger
which will  benefit  the  holders of GOG's  common  stock at the  expense of the
holders of the Preferred  and (b) to obtain a declaration  that the terms of the
proposed merger constitute a breach of the contractual rights of the Preferred."
The  complaint  seeks,  among other things,  certification  as a class action on
behalf  of all  holders  of  GOG's  preferred  stock,  a  declaration  that  the
defendants  have committed an abuse of trust and have breached  their  fiduciary
and contractual  duties,  an injunction  enjoining the Merger and money damages.
Defendants  believe that the complaint is without merit and intend to vigorously
defend  against the action.  At this time, the Company is unable to estimate the
range of potential  loss, if any, from this  uncertainty.  However,  the Company
believes the resolution of this  uncertainty  should not have a material adverse
effect upon the Company's financial position, although an unfavorable outcome in
any reporting  period could have a material  impact on the Company's  results of
operations for that period.

         The  Company is a party to various  other  lawsuits  incidental  to its
business, none of which are anticipated to have a material adverse impact on its
financial position or results of operations.

                                       13
<PAGE>
                          PATINA OIL & GAS CORPORATION
                     MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                  FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Results of Operations

     On May 2, 1996,  Gerrity  Oil & Gas  Corporation  ("GOG") was merged into a
wholly owned  subsidiary of the Company (the  "Merger").  This  transaction  was
accounted for as a purchase of GOG. Accordingly, the results of operations since
the Merger reflect the impact of the acquisition.

     Total  revenues  for the three month and six month  periods  ended June 30,
1996  increased  to $19.5  million and $30.1  million.  The amounts  represented
increases of 51% and 11% as compared to the respective  prior year periods.  The
revenue  increases  are due to the  effect of the Merger  and  improved  product
prices  in 1996.  The net  loss for the  second  quarter  1996 was $1.1  million
compared to a net loss of $428,000 for the same period in 1995.  The increase in
net loss is primarily  attributed to a significant  increase in interest expense
related to higher average debt balances  outstanding and higher average interest
rates due to the 11.75% Senior Subordinated Notes.

     Oil and gas sales less direct operating  expenses were $15.7 million, a 52%
increase  from the prior year quarter.  Average  daily  production in the second
quarter  of 1996  was  4,908  barrels  and  69.8  MMcf  (16,538  barrels  of oil
equivalent),  increases of 28% and 10%,  respectively.  The production increases
resulted solely from the Merger.  Exclusive of the Merger,  production continued
to decline  due to the  Company's  reduced  development  schedule  and  expected
initial  declines on the large number of wells drilled and completed in 1994 and
early 1995.  There were 64 wells placed on production in the first six months of
1995  compared  to 1 well in the first  six  months  of 1996.  Total  production
volumes are  expected to increase in the third  quarter due to the full  quarter
effect of the Merger and a modest drilling and recompletion program initiated in
the third quarter. However, from that point, while production is not expected to
continue  to  decline  at the  current  rate,  a  decrease  is  expected  unless
development   drilling   activity  is  substantially   increased  or  additional
acquisitions are consummated.  The decision to increase  development drilling is
heavily  dependent on the current prices being received for  production.  Unless
prices increase significantly, development drilling is expected to be limited.

     Average  oil  prices  increased  to $20.24 per  barrel  compared  to $17.24
received in the second quarter of 1995.  Natural gas prices increased from $1.19
per Mcf in the  first  quarter  of 1995 to  $1.60  in  1996.  The  increase  was
primarily  the  result  of prior  year  production  being  marketed  under  term
arrangements  which were based on Rocky  Mountain  region pricing (which remains
depressed)  whereas  the 1996  production  benefitted  from a  portion  of these
agreements expiring. This allowed the production to be sold at local spot prices
which  had  increased  as a  result  of  higher  demand  and  overall  declining
production in the DJ Basin. Direct operating expenses increased to $2.29 per BOE
compared  to  $1.91  in the  prior  year  quarter.  The  increase  is  primarily
attributed to focusing more attention on enhancing production through performing
workovers on existing properties rather than through development  drilling. As a
result of the Merger,  the Company  expects to realize  efficiencies  which will
help  hold  direct  operating  expenses  per BOE  constant  even  if  production
continues to decline.

     General and  administrative  expenses,  net of  reimbursements,  for second
quarter 1996 were $1.6 million,  a 19% increase from the same period in 1995 but
only a 2% increase over first quarter 1996.  The increases are the result of the
Merger  partially  offset by reductions in allocated costs by SOCO. Prior to the
Merger, the Company did not have its own employees. Employees and certain office
space  and  furniture,  fixtures  and  equipment  were  provided  by SOCO.  SOCO
allocated general and administrative expenses based on estimates of expenditures
incurred on behalf of the Company.  The general and  administrative  expenses in
1996 through the Merger were lower than the expenses for the  comparable  period
in 1995,  reflecting the lower  overhead  associated  with the reduced  drilling
activity and the Company's overall reduction in personnel.

     Interest and other expense was $3.7 million compared to $1.4 million in the
second quarter of 1995. The increase is the result of an increase in the average
outstanding  debt  levels due to  additional  debt  recorded  as a result of the
Merger as well as debt incurred to finance  certain costs related to the Merger.
The  Company's  average  interest  rate climbed to 9.1%  compared to 7.0% in the
second  quarter  1995.  This  increase  is due  primarily  to the 11.75%  Senior
Subordinated Notes.

                                                        14
<PAGE>
     Depletion,  depreciation  and  amortization  expense for the second quarter
totalled $11.8 million,  an increase of $3.4 million or 41% from the same period
in 1995. The increase  resulted from the increase in production and an increased
depletion, depreciation and amortization rate of $7.81 per BOE compared to $6.36
in 1995.  The primary  cause for the increased  rate was a downward  revision in
reserve  quantities  due to proved  undeveloped  reserves  being  classified  as
uneconomic  at year end 1995 prices and the inclusion of the  amortization  of a
noncompete agreement entered into in conjunction with the Merger.

Development, Acquisition and Exploration

     During the six months  ended June 30,  1996,  the Company  incurred  $219.2
million in capital  expenditures.  Of this amount, $218.3 million related to the
acquisition   of  GOG  by  the  issuance  of  stock  of  the  Company.   Capital
expenditures,  exclusive of acquisitions,  totalled only $932,000 as the Company
has continued to limit its development  activity based on current Rocky Mountain
natural gas prices.

Financial Condition and Capital Resources

     At June 30,  1996,  the Company had total assets of $455.5  million.  Total
capitalization was $412.5 million, of which 46% was represented by stockholder's
equity,  28% by senior debt and 26% by subordinated  debt. During the six months
ended June 30, 1996,  net cash  provided by  operations  was $15.0  million,  as
compared to $5.6 million for the same period in 1995. As of June 30, 1996, there
were no commitments for capital expenditures.  The Company anticipates that 1996
expenditures for development drilling, giving effect to the Merger, will be less
than $10 million,  which will allow for a reduction of  indebtedness  or provide
funds to pursue  additional  acquisitions.  The level of these and other  future
expenditures  is largely  discretionary,  and the amount of funds devoted to any
particular  activity  may  increase  or  decrease  significantly,  depending  on
available opportunities and market conditions.  The Company plans to finance its
ongoing  development,  acquisition and exploration  expenditures  using internal
cash  flow,  proceeds  from  asset  sales  and its bank  credit  facilities.  In
addition,  joint  ventures  or future  public and private  offerings  of debt or
equity securities may be utilized. Due to restrictions outlined in GOG's various
credit agreements, cash generated by GOG will be retained by GOG and will not be
available to fund the Company's other operations.

     Prior to the Merger,  SOCO  financed  all of the  Company's  activities.  A
portion of such  financing  was  considered to be an investment by parent in the
Company with the  remaining  portion being  considered  debt payable to SOCO. In
conjunction  with the Merger,  the $75 million  debt payable to SOCO was paid in
full and the Company does not expect SOCO to provide any additional funding.

     Simultaneously  with the  Merger,  the Company  entered  into a bank credit
agreement.  The agreement consists of (i) a facility provided to the Company and
SOCO  Wattenberg  (the "Company  Facility") and (ii) a facility  provided to GOG
(the "GOG Facility").

     The Company  Facility  consists of a term loan  facility in an amount up to
$87 million and a revolving  credit  facility in an aggregate  amount up to $102
million.  The term loan facility  will be available to finance  purchases of the
GOG 11.75% Senior  Subordinated Notes until the first anniversary of the Merger.
At June 30,  1996,  the Company had not  utilized  the term loan  facility.  The
amount  available for  borrowing  under the  revolving  credit  facility will be
limited to a semiannually  adjusted  borrowing base that equaled $102 million at
June 30,  1996.  At June 30,  1996,  $81.8  million  was  outstanding  under the
revolving credit facility.

     The GOG Facility is a revolving  credit facility in an aggregate  amount up
to $51 million.  The amount  available for borrowing under the GOG Facility will
be limited to a fluctuating  borrowing base that equaled $51 million at June 30,
1996. At June 30, 1996,  $34.5 million was  outstanding  under the GOG Facility.
The GOG Facility was used  primarily to  refinance  GOG's  previous  bank credit
facility and pay costs associated with the Merger.

     The bank credit agreement contains certain financial  covenants,  including
but not limited to a maximum total debt to capitalization ratio, a maximum total
debt to EBITDA ratio and a minimum current ratio. The bank credit agreement also
contains certain negative  covenants,  including but not limited to restrictions
on indebtedness;  certain liens;  guaranties,  speculative derivatives and other
similar obligations; asset dispositions; dividends, loans and advances; creation
of subsidiaries;  investments; leases; acquisitions;  mergers; changes in fiscal
year; transactions with affiliates;

                                       15
<PAGE>
changes  in  business   conducted;   sale  and  leaseback  and  operating  lease
transactions; sale of receivables; prepayment of other indebtedness;  amendments
to principal  documents;  negative pledge clauses;  issuance of securities;  and
non-speculative commodity hedging.

     In 1992,  the Company  formed a partnership  to monetize its Section 29 tax
credits.  Through  May 1996,  a revenue a increase of more than $.40 per Mcf was
realized on  production  volumes from  qualified  Section 29  properties in this
arrangement. The Company recognized $860,000 and $646,000 of this revenue during
the six months  ended June 30,  1995 and 1996,  respectively.  In May 1996,  the
Company  terminated  the  partnership  and  simultaneously  entered  into  a new
agreement to monetize Section 29 tax credits. The new agreement provides for the
Company  to  receive  proceeds  from  Section  29  tax  credits  via a  variable
production  payment.  As a result,  this  arrangement  is  expected  to increase
revenue by more than $.40 per Mcf through 2002. Subsequent to June 30, 1996, the
Company  negotiated an agreement whereby  additional Section 29 tax credits will
be monetized under this same type of structure.

     The Company  believes  that its capital  resources are adequate to meet the
requirements of its business. However, future cash flows are subject to a number
of variables including the level of production and oil and gas prices, and there
can be no assurance  that  operations  and other capital  resources will provide
cash in sufficient amounts to maintain planned levels of capital expenditures or
that increased capital expenditures will not be undertaken.

Inflation and Changes in Prices

     While  certain of its costs are affected by the general level of inflation,
factors  unique  to  the  petroleum   industry   result  in  independent   price
fluctuations.  Over the past five years,  significant fluctuations have occurred
in oil and gas prices.  Although it is particularly difficult to estimate future
prices of oil and gas, price fluctuations have had, and will continue to have, a
material effect on the Company.

                                                        16
<PAGE>
PART II.  OTHER INFORMATION

Item 6.  Exhibits and Reports on Form 8-K


(a)      Exhibits -

        10.1.1      First  Amendment to Credit  Agreement dated June 28, 1996 by
                    and among  Patina,  Gerrity Oil & Gas  Corporation  and SOCO
                    Wattenberg  Corporation,  as Borrowers,  and Texas  Commerce
                    Bank National  Association,  as  Administrative  Agent,  and
                    certain commercial lending institutions.

         10.3       Agreement  dated July 16,  1996 by and  between F. H. Smith,
                    employee, and Patina Oil & Gas Corporation.

         10.4       Sublease  Agreement  dated as of May 1, 1996 by and  between
                    Snyder Oil Corporation, as Sublandlord, and Patina Oil & Gas
                    Corporation, as Subtenant.

         27         Financial Data Schedule



(b)       Reports on Form 8-K -

          On May 17, 1996,  the Company filed with the  Securities  and Exchange
          Commission a Current  Report on Form 8-K. The Report  disclosed  under
          Item 1 information regarding the approval of the Amended Agreement and
          Plan of Merger  among  Snyder Oil  Corporation,  the  Company,  Patina
          Merger Corporation and Gerrity Oil & Gas Corporation.

                                       17
<PAGE>
                                                    SIGNATURES



         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereunto duly authorized.




                          PATINA OIL & GAS CORPORATION


                              
                          By /s/ David J. Kornder
                            --------------------------------
                             David J. Kornder, Vice President
















August 13 1996

                                       18

                                                                   EXHIBIT 10.73

                       FIRST AMENDMENT TO CREDIT AGREEMENT

      This First  Amendment to Credit  Agreement  (this  "AMENDMENT") is entered
into as of the 28th day of June, 1996, by and among Patina Oil & Gas Corporation
("PATINA"),  SOCO Wattenberg Corporation ("SWAT"), Gerrity Oil & Gas Corporation
("GERRITY"),  (Patina, SWAT and Gerrity are each individually referred to herein
as "BORROWER" and  collectively  as  "BORROWERS"),  Texas Commerce Bank National
Association,  as Administrative Agent ("ADMINISTRATIVE  AGENT"),  NationsBank of
Texas, N.A., as Documentary Agent ("DOCUMENTARY AGENT"), Wells Fargo Bank, N.A.,
CIBC, Inc. and Credit Lyonnais New York Branch,  as Co-Agents  ("CO-AGENTS") and
the  financial  institutions  listed on Schedule 1 to the Credit  Agreement  (as
hereinafter defined) as Banks (individually a "BANK" and collectively "BANKS").

                               W I T N E S E T H:

      WHEREAS, Borrowers, Administrative Agent, Documentary Agent, Co-Agents and
Banks are parties to that certain Credit  Agreement  dated as of May 2, 1996 the
"CREDIT AGREEMENT") (unless otherwise defined herein, all terms used herein with
their initial letter  capitalized shall have the meaning given such terms in the
Credit Agreement); and

     WHEREAS, pursuant to the Credit Agreement the Banks have made certain Loans
to Borrowers; and

      WHEREAS,  Borrowers have advised Banks that Patina has repurchased 135,400
shares of Common Stock in market transactions for an aggregate  consideration of
$923,345.00 (the "PATINA COMMON STOCK REPURCHASE"); and

      WHEREAS,  the Patina Common Stock  Repurchase  violates SECTION 9.2 of the
Credit Agreement and constitutes an Event of Default under the Credit Agreement;
and

      WHEREAS,  Borrowers  have  requested  that the  Banks  waive  the Event of
Default resulting from the Patina Common Stock Repurchase; and

      WHEREAS,  the Banks have agreed to grant such waiver on the condition that
the Credit Agreement be amended in certain respects.

      NOW  THEREFORE,  for and in  consideration  of the  mutual  covenants  and
agreements  herein  contained  and other good and  valuable  consideration,  the
receipt  and  sufficiency  of  which  are  hereby  acknowledged  and  confessed,
Borrowers, each Agent, and each Bank hereby agree as follows:

      SECTION 1.  AMENDMENTS.  In reliance on the  representations,  warranties,
covenants and agreements contained in this Amendment, the Credit Agreement shall
be amended effective June 28, 1996 (the "EFFECTIVE DATE") in the manner provided
in this Section 1.


                                 1

<PAGE>



     1.1.  AMENDMENT TO  DEFINITIONS.  The  definitions  of "INITIAL  RESTRICTED
PAYMENT  LIMIT"  and  "LOAN  PAPERS"  contained  in  Section  1.1 of the  Credit
Agreement shall be amended to read in full as follows:

           "Initial  Restricted Payment Limit" means $11,000,000;  provided that
      such amount shall be allocated by Borrowers  between Patina and Gerrity on
      or before August 15, 1996, and Borrowers  shall notify Banks in writing of
      such  allocation  together  with the  delivery  to Banks of the  financial
      statements for the Fiscal Quarter ended June 30, 1996 required by SECTIONS
      8.1(B), (D) and (E); provided,  further,  that not more than $5,000,000 of
      the  Initial  Restricted  Payment  Limit  shall be  allocated  to  Patina.
      "Allocated Shares of Initial Restricted Payment Limit" means, with respect
      to Patina or Gerrity, that portion of the Initial Restricted Payment Limit
      allocated  to  Patina  or  Gerrity  (as   applicable)   pursuant  to  this
      definition.

           "Loan Papers" means this Agreement, the Notes, the Patina Guarantees,
      the Collateral Assignment of Intercompany Loan, the Tax Credit Transaction
      Agreement,  the Patina Pledge Agreement, the Gerrity Pledge Agreement, the
      First  Amendment,  all  Mortgages now or at any time  hereafter  delivered
      pursuant  to  SECTION  5.1,  and  all  other  certificates,  documents  or
      instruments delivered in connection with this Agreement,  as the foregoing
      may be amended from time to time.

     1.2. ADDITIONAL  DEFINITIONS.  Section 1.1 of the Credit Agreement shall be
amended to add the following definition to such Section:

           "First Amendment" means the First Amendment to Credit Agreement dated
      as of June 28, 1996,  entered  into by and among  Borrowers,  Agents,  and
      Banks.

      SECTION 2.WAIVER  REGARDING PATINA COMMON STOCK  REPURCHASE.  Banks hereby
waive  Borrowers'  obligation to comply with SECTION 9.2 of the Credit Agreement
to the extent, but only to the extent,  that SECTION 9.2 of the Credit Agreement
prohibits  the Patina  Common  Stock  Repurchase,  and Banks  waive the Event of
Default resulting from such Patina Common Stock Repurchase. Each Borrower hereby
acknowledges  that such  waiver is limited  solely to SECTION  9.2 of the Credit
Agreement,  and solely to the Patina Common Stock Repurchase.  Nothing contained
herein shall  obligate Banks to grant any additional or future waiver of SECTION
9.2 of the Credit Agreement or any other provision of any other Loan Paper.

      SECTION  3.REPRESENTATIONS  AND WARRANTIES.  In order to induce Agents and
Banks to enter into this  Amendment and grant the waiver  contained in SECTION 2
hereof, each Borrower hereby represents and warrants to each Agent and each Bank
that:

          (a)  each  representation  and  warranty  of  each  Borrower  and  the
     Restricted  Subsidiaries  contained in the Loan Papers are true and correct
     in all material  respects as of the date hereof  (except to the extent that
     such  representations  and warranties are expressly made as of a particular
     date,  in which event such  representations  and  warranties  were true and
     correct as of such date);

          (b) except for the Event of Default  under  Section  9.2 of the Credit
     Agreement  resulting  from the Patina  Common Stock  Repurchase,  neither a
     Default nor an Event of Default has occurred which is continuing; and

          (c) Borrowers have no defenses to payment,  counterclaims or rights of
     set-off with respect to the Obligations on the date hereof.

      SECTION 4.MISCELLANEOUS.

      4.1  REAFFIRMATION OF LOAN PAPERS;  EXTENSION OF LIENS. Any and all of the
terms and provisions of the Credit  Agreement and the Loan Papers shall,  except
as amended and modified hereby,  remain in full force and effect.  Each Borrower
hereby extends the Liens securing the  Obligations  until the  Obligations  have
been paid in full,  and agrees  that the  amendments  and  modifications  herein
contained  shall in no  manner  affect or impair  the  Obligations  or the Liens
securing payment and performance thereof.

      4.2 PARTIES IN INTEREST. All of the terms and provisions of this Amendment
shall bind and inure to the benefit of the parties  hereto and their  respective
successors and assigns.

      4.3 LEGAL  EXPENSES.  Each  Borrower  hereby  agrees to pay on demand  all
reasonable  fees and  expenses of counsel to  Administrative  Agent  incurred by
Administrative  Agent  in  connection  with  the  preparation,  negotiation  and
execution of this Amendment and all related documents.

      4.4 COUNTERPARTS.  This Amendment may be executed in counterparts, and all
parties need not execute the same counterpart;  however, no party shall be bound
by this  Amendment  until this  Amendment  has been  executed by  Borrowers  and
Required  Banks at which time this  Amendment  shall be binding on,  enforceable
against and inure to the benefit of Borrowers,  Agents and all Banks. Facsimiles
shall be effective as originals.

      4.5 COMPLETE AGREEMENT. THIS AMENDMENT, THE CREDIT AGREEMENT AND THE OTHER
LOAN  PAPERS  REPRESENT  THE FINAL  AGREEMENT  AMONG THE  PARTIES AND MAY NOT BE
CONTRADICTED  BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS  OR ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

      4.6  HEADINGS.  The  headings,  captions  and  arrangements  used  in this
Amendment are, unless specified otherwise, for convenience only and shall not be
deemed to limit,  amplify or modify the terms of this Amendment,  nor affect the
meaning thereof.

      IN WITNESS  WHEREOF,  the parties  hereto have caused this Amendment to be
duly executed by their respective Authorized Officers on the date and year first
above written.

                                    BORROWERS:

                                    PATINA OIL & GAS CORPORATION,
                                    a Delaware corporation


                                    By:
                                    Its:

                                    SOCO WATTENBERG CORPORATION,
                                    a Delaware corporation


                                    By:
                                    Its:


                                    GERRITY OIL & GAS CORPORATION,
                                    a Delaware corporation


                                    By:
                                    Its:



                                 2

<PAGE>




                                   ADMINISTRATIVE AGENT:

                                   TEXAS COMMERCE BANK
                                   NATIONAL ASSOCIATION


                                    By:
                                    Its:

                                    DOCUMENTARY AGENT:

                                    NATIONSBANK OF TEXAS, N.A.


                                    By:
                                    Its:

                                    CO-AGENTS:

                                    CIBC, INC.


                                    By:
                                    Its:

                                    CREDIT LYONNAIS NEW YORK BRANCH


                                    By:
                                    Its:

                                    BANKS:

                                    TEXAS COMMERCE BANK
                                    NATIONAL ASSOCIATION


                                    By:
                                    Its:


                                 3

<PAGE>



                                    NATIONSBANK OF TEXAS, N.A.


                                    By:
                                    Its:

                                    CIBC, INC.


                                    By:
                                    Its:

                                    CREDIT LYONNAIS NEW YORK BRANCH


                                    By:
                                    Its:

                                    WELLS FARGO BANK, N.A.


                                    By:
                                    Its:


                                 4



                                    AGREEMENT

      THIS  AGREEMENT is made and entered into this 16th day of July,  1996, but
effective on July 31, 1996, by and between F.H. Smith  (Employee) and Patina Oil
& Gas Corporation ("Patina or the Company").

                                    RECITALS

1.    Employee is employed by Patina as a Vice President of Operations.

2. Employee's employment with Patina commenced on May 2, 1996 as a result of the
closing of the  transactions  contemplated by an amended and restated  Agreement
and Plan of Merger  dated as of January 16, 1996 and amended and  restated as of
March  20,  1996  by  and  among  Snyder  Oil  Corporation,  Patina  Oil  &  Gas
Corporation,  Patina Merger  Corporation and Gerrity Oil & Gas Corporation  (the
"Merger").

3. As a result of the Merger,  Patina  determined that certain positions held by
former Snyder Oil  Corporation  employees and former Gerrity Oil & Gas employees
were no longer necessary and certain  employees were laid off as a result of the
Merger.  Employee's position initially was not one identified as being no longer
necessary as a consequence of the Merger.

4.  While  Employee's  position  was  not  initially  identified  as  one  to be
eliminated  as a  result  of the  Merger,  it has now been  identified  as being
duplicative and no longer necessary for the ongoing operations of Patina.

5. As a result,  Employee  and Patina have  agreed to enter into this  Agreement
pursuant  to which  Employee  is being laid off as a direct  consequence  of the
Merger.

                                    AGREEMENT

      In  consideration  of a payment by Patina to  Employee  of the amounts set
forth herein, and in further  consideration of the mutual covenants,  conditions
and  stipulations  set  forth in this  Agreement,  Employee  and  Patina  agree,
effective as provided in paragraph 7 as follows:

1.  Employee's  employment  with  Patina  will  terminate  effective  5:00 p.m.,
Mountain  Daylight Time, July 31, 1996. On July 31, 1996,  Employee will be paid
his regular salary for July 1996, subject to normal and standard  deductions for
FICA,  Medicare,  tax, state and federal taxes, all as applicable.  In addition,
Employee will be paid the sum of $75,000 (subject to applicable withholdings and
deductions,  if any) as a severance allowance. In addition, as of July 31, 1996,
Employee  will have  accrued  20.75 days of vacation  for which he will be paid.
Employee may purchase from Patina, the Company vehicle he currently is utilizing
for Company  business  if Patina and  Employee  agree on a purchase  price on or
before July 25, 1996. If Employee purchases the vehicle,  the purchase price for
the vehicle will be deducted  from  Employee's  severance  allowance and accrued
vacation payment. If Employee purchases the vehicle,  clear title to the vehicle
will be delivered to Employee on July 31, 1996.


<PAGE>
2. In consideration of the foregoing, Employee hereby knowingly and voluntarily,
fully and finally releases,  acquits, and forever discharges Patina, Gerrity Oil
& Gas Corporation  and SOCO Wattenberg  Corporation and any affiliates and their
past and  present  officers,  directors,  (in their  capacity  as  officers  and
directors),   stockholders,   partners,   trustees,   beneficiaries,   managers,
employees, attorneys, agents, successors or assigns (collectively,  the "Company
and Related Release  Parties"),  from any and all claims,  charges,  complaints,
liens, demands, causes of action, obligations,  damages and liabilities, whether
known or unknown,  that he had,  now has, or may after claim to have against the
Company and  Related  Release  Parties  arising out of or relating in any way to
Employee's  relationship  with  Patina  and/or its  subsidiaries  as an officer,
director,  employee, or in any other capacity,  except those arising out of this
Agreement  and  Rights  to  Indemnification  under  the  Patina  Certificate  of
Incorporation,  By-Laws and Delaware law and directors and officers insurance as
currently in effect.  This Release  expressly  extends to, without  limiting the
generality  of the  foregoing,  any claims  arising under Title VII of the Civil
Rights  Act of 1964 as  amended,  Age  Discrimination  and  Employment  Act,  as
amended, the United States  Constitution,  any State Constitutions and any other
federal,  state  or  local  statute,   regulation  or  ordinance  governing  the
employment relationship.

5. It is expressly  understood and agreed that there are no claims or provisions
or  liabilities  other  than  those set forth or  otherwise  referenced  in this
Agreement and with respect to the Agreement,  Employee covenants and agrees that
he shall forever refrain from initiating,  prosecuting,  maintaining or pressing
any action,  suit or claim in any  jurisdiction  against the Company and Related
Release  Parties based upon the termination of his employment as a result of the
Merger or holding of any office with the Company and Related  Release Parties or
any of their subsidiaries prior to the effective date hereof.

6. Employee  represents  and warrants that there has been no assignment or other
transfer  of any  interest  in any claim he may have  against  the  Company  and
Related  Release  Parties,  or any of them, and Employee agrees to indemnify and
hold  harmless the Company and Related  Release of Parties and each of them from
any liability,  claims,  demands,  damages,  costs,  expenses and attorneys fees
incurred by any such Company and Released  Parties,  or any of them, as a result
of any such assignment or transfer.

7. Employee  represents and acknowledges  that he is aware that he has the right
to review  this  Agreement,  and  specifically,  the  provisions  regarding  the
release,  with legal  counsel of his choice prior to signing the  Agreement  and
that he has done so. Employee  further  represents and  acknowledges  that he is
aware that he has a 21 day period  within  which to consider the  provisions  of
this Agreement,  although he may sign and return such Agreement sooner,  that he
has the right to revoke the  Agreement  for a period of seven days after signing
it, and that the  Agreement  shall not be  effective or  enforceable  until such
seven day revocation expires without revocation.

8. Employee  represents  that this  Agreement has been carefully read by him and
that he knows  and  understands  the  contents  hereof.  Employee  has  received
independent  legal  advise  from  attorneys  of his choice  with  respect to the
preparation,  review and  advisability  of executing  this  Agreement.  Employee
further represents and acknowledges that he has freely and voluntarily  executed
this Agreement  after  independent  investigation  and without fraud,  duress or
undue influence and that in


<PAGE>



executing this Agreement he has not relied on any  representations  or statement
not set forth herein with regard to the subject matter, basis, or effect of this
Agreement or otherwise.

9. This  Agreement  will be governed by and construed in force under the laws of
the State of Colorado without regard to its conflict of laws rules.

10. While the  provisions  contained in this  Agreement  are  considered  by the
parties to be reasonable in all circumstances,  it is recognized that provisions
of the nature in question may fail for technical reasons and, accordingly, it is
hereby  agreed and declared  that if any one or more of such  provisions  shall,
either by itself or themselves or taken with others,  be judged to be invalid as
exceeding  what is reasonable  in all  circumstances  for the  protection of the
interests  of  Patina,  but  would  be  valid  if any  particular  provision  or
provisions were deleted or restricted or limited in any particular  manner or if
the period thereof were reduced or curtailed,  then such provisions  shall apply
with  such  deletion,  restriction,   limitation,   reduction,   curtailment  or
modification as may be necessary to make them valid and effective.

11. This Agreement  constitutes the entire Agreement relating to the matters set
forth herein  between the parties who have executed and  supersedes  any and all
other Agreements, understandings, negotiations, or discussions either oral or in
writing express or implied,  between the parties to this Agreement.  The parties
to this Agreement each acknowledge,  except as otherwise set forth herein,  that
no  representations,   inducements,   promises,  agreements  or  warranties,  or
otherwise have been made by them or anyone acting on their behalf, which are not
embodied  to this  Agreement,  that they have not  executed  this  Agreement  in
reliance on any such representation,  inducement, promise, agreement or warranty
and that no  representation,  inducement,  promise,  agreement  or warranty  not
contained  in  this  Agreement  including  but not  limited  to,  any  purported
supplements,  modifications,  waivers or terminations of this Agreement shall be
valid  or  binding,  unless  executed  in  writing  by all the  parties  to this
Agreement.

12. Employee  agrees that he will not make any  disparaging  comments or remarks
specifically directed at Patina, Gerrity Oil & Gas Corporation,  SOCO Wattenberg
Corporation,  Snyder Oil  Corporation or any affiliated  party or any officer or
director thereof.

13. As further consideration of this Agreement, Patina and Employee hereby agree
and acknowledge  that certain Stock Option Agreement dated May 3, 1996 is hereby
terminated and the same has no further force or effect.

IN WITNESS  WHEREOF the parties have executed this  Agreement as of the date and
year first set forth above,  effective,  for all purposes, at 5:00 p.m. Mountain
Time, July 31, 1996.

                               PATINA OIL & GAS CORPORATION

                               By:  /s/Brian J. Cree 
                                    Brian J. Cree
                                    Executive Vice President and
                                    Chief Operating Officer


<PAGE>



                                    EMPLOYEE

                                 /s/ F.H. Smith
                               By:  F. H. Smith

Subscribed and sworn to before me this ____ day of July, 1996.

WITNESS my hand and official seal.

My commission expires:

[SEAL]                         ______________________________
                               Notary Public

                                   SUBLEASE


      THIS   SUBLEASE  is  made  and  entered  into  as  of  May  1,  1996  (the
"Commencement  Date"),  by  and  between  SNYDER  OIL  CORPORATION,  a  Delaware
corporation  ("Sublandlord"),  and  PATINA  OIL & GAS  CORPORATION,  a  Delaware
corporation ("Subtenant").

                                   RECITALS

      A. Sublandlord,  as Tenant,  has entered into a Lease of Office Space (the
"Lease  Agreement")  dated June 5,  1991,  with  Brookfield  Minnesota  Inc.,  a
Colorado  corporation  (now  known  as  Brookfield  Denver  Inc.),  as  Landlord
(hereinafter, "Lessor"), for the lease of certain premises in an office building
(the "Building") located at 1625 Broadway,  Denver, Colorado, being a portion of
the World Trade Center, more particularly  defined in the Lease Agreement as the
"Project."

      B. The Lease Agreement has been amended and supplemented by various leases
of additional space,  surrenders of leases and space and amendments of which the
following  remain  effective:  (1) Lease of Additional  Office Space dated as of
September 9, 1992;  (2) Second Lease of  Additional  Office Space dated June 17,
1993;  (3) Amended and Restated  Second Lease of  Additional  Office Space dated
September  13,  1993;  (4)  Sixth  Lease of  Additional  Office  Space and First
Amendment and Extension of Lease dated June 2, 1994; (5) First Partial Surrender
of Lease dated  September 8, 1994; (6) Second  Amendment of Lease dated February
22,  1995;  (7) Third  Amendment  of Lease dated June 27,  1995;  and (8) Second
Partial   Surrender  and  Fourth  Amendment  of  Lease  dated  April  18,  1996,
(collectively, the "Lease Amendments").

      C. The Lease Agreement,  as amended by the Lease Amendments,  all of which
are attached  hereto as Exhibit A, are hereinafter  collectively  referred to as
the "Master Lease." The entire  premises leased to Sublandlord  under the Master
Lease is hereinafter referred to as the "Premises."

      D. Sublandlord desires to sublease to Subtenant,  and Subtenant desires to
sublease from  Sublandlord a portion of the Premises (the "Subleased  Premises,"
as further  defined in this  Sublease) on the terms and  conditions set forth in
this Sublease.

      For and in  consideration of the foregoing  Recitals,  the mutual promises
and  covenants of the parties,  and other good and valuable  consideration,  the
receipt  and  sufficiency  of which are  hereby  acknowledged,  Sublandlord  and
Subtenant hereby agree as follows:

     1. Sublease. Sublandlord hereby leases the Subleased Premises to Subtenant,
and Subtenant  leases the Subleased  Premises from  Sublandlord on the terms and
conditions set forth in this Sublease.



Patina sub lease

<PAGE>



     2.  Subleased  Premises.  The  "Subleased  Premises"  shall mean the 28,628
square  feet of  rentable  area,  being  all of the 19th and 20th  floors of the
Building, as depicted on Exhibit B to this Sublease.

     3. Term. The term of this Sublease will begin as of the  Commencement  Date
and will terminate on November 30, 2001.


                                   - 2 -

Patina sub lease

<PAGE>



     4.  Condition  of  Subleased  Premises.  THE  SUBLEASED  PREMISES  SHALL BE
DELIVERED ON AN "AS IS" CONDITION,  WITHOUT ANY REPRESENTATIONS OR WARRANTIES AS
TO ITS  CONDITION  OR FITNESS  FOR A  PARTICULAR  USE.  Except for the  possible
payment of a Future  Expansion  Allowance and an Improvement  Allowance to which
Subtenant  may be  entitled  pursuant to the terms of Sections 20 and 21 of this
Sublease,  Sublandlord shall have no  responsibility to arrange,  effect or make
any changes, alterations,  modifications,  additions or repairs to the Subleased
Premises,  nor to bear  any  cost  or  expense  incident  to any  such  changes,
alterations, modifications, additions or repairs which may be desired, requested
or undertaken by Subtenant in the future.

     5. Annual Rent.  Subtenant  shall pay to  Sublandlord an Annual Rent in the
amount of  $1,894,067.09,  payable in the manner provided in this Section 5. For
purposes of calculating  the Annual Rent payable under this  Sublease,  17,892.5
square feet of rentable area of the Subleased  Premises  shall be referred to as
the "Pass Through Space" and the remaining 10,735.5 square feet of rentable area
shall be referred to as the "Base Year Space."

            (a)  Pass  Through  Space  Annual  Rent.   Subtenant  shall  pay  to
      Sublandlord  as  Annual  Rent  for  the  Pass  Through  Space  the  sum of
      $1,110,080.60,  payable in  advance,  without  notice,  demand,  offset or
      counterclaim, in monthly installments according to the following schedule:

                  (i) The sum of $80,516.28 for the period from the Commencement
            Date  through  October 31,  1996,  calculated  at $9.00 per rentable
            square  foot  per  annum,   payable  in  monthly   installments   of
            $13,419.38,  on the first day of each  calendar  month  during  this
            period;

                  (ii) The sum of  $357,850.08  for the period from  November 1,
            1996  through  October 31, 1998,  calculated  at $10.00 per rentable
            square foot per annum, payable in monthly installments of $14,910.42
            on the first day of each calendar month during this period;

                  (iii) The sum of  $205,763.76  for the period from November 1,
            1998  through  October 31, 1999,  calculated  at $11.50 per rentable
            square foot per annum, payable in monthly installments of $17,146.98
            on the first day of each calendar month during this period; and

                  (iv) The sum of  $465,950.50  for the period from  November 1,
            1999 through  November 30, 2001,  calculated  at $12.50 per rentable
            square foot per annum, payable in monthly installments of $18,638.02
            on the first day of each calendar month during this period.

            (b) Base Year Space Annual Rent.  Subtenant shall pay to Sublandlord
      as Annual  Rent for the Base Year  Space  the sum of  $783,986.49  for the
      period from  September 1, 1996 through  November 30, 2001,  calculated  at
      $13.91 per  rentable  square foot per annum,  payable in advance,  without
      notice,  demand,  offset  or  counterclaim,  in  monthly  installments  of
      $12,444.23 on the first day of each calendar month during this period.

          (c) General.  If the Commencement  Date is other than the first day of
     the month or if the term ends on other than the last day of the month, rent
     shall be appropriately prorated, and the

                                   - 3 -

Patina sub lease

<PAGE>



Annual  Rent for such  partial  first  month  shall be payable in advance on the
Commencement  Date.  All  Rent  payable  under  this  Sublease  shall be paid to
Sublandlord at Sublandlord's address as set forth in this Sublease.

      6. Additional Rent. During the term of this Sublease,  Subtenant shall pay
to Sublandlord, in addition to the Annual Rent, as and when due under the Master
Lease,  all other Rent which may be due and payable pursuant to the Master Lease
which is attributable to the Subleased Premises including, but not limited to:

            (a)  Any  Occupancy  Costs  which  Sublandlord  is  required  to pay
      pursuant  to Article 4 of the Master  Lease which is  attributable  to the
      Pass Through Space;

            (b)  Any  Occupancy  Costs  which  Sublandlord  is  required  to pay
      pursuant  to Article 4 of the Master  Lease which is  attributable  to the
      Base Year Space in excess of $6.75 per rentable square foot per annum;

            (c) Any other rent or other sums  payable as  additional  rent under
      the Master Lease  attributable  to the Subleased  Premises or  Subtenant's
      activities; and

            (d) Any Rent and other payments which Sublandlord is required to pay
      under Article  13.00 of the Master Lease by reason of Subtenant  remaining
      in possession of the Subleased  Premises  after the expiration of the term
      of the Master Lease or this Sublease.

If the term of this  Sublease  commences  after the  beginning of or  terminates
before the end of a Fiscal Year,  any amount  payable by Subtenant for Occupancy
Costs shall be adjusted proportionately.

          7.  Parking.  Subtenant  shall  have  the  option  of  subleasing  the
     following parking spaces from Sublandlord,  all of which spaces shall be at
     the rates set by Lessor from time to time:

            (a) Three (3) parking  spaces  underneath  the  Project,  one (1) of
      which is currently a reserved  space but may be converted to an unreserved
      space at any time by Lessor; and

            (b) Nineteen (19)  unreserved  parking spaces at the Tremont Parking
      Center,  located at 15th and Tremont  Streets,  representing one space for
      each 1,500 square feet of rentable area within the Subleased Premises.

Subtenant shall exercise such options by executing and delivering to Sublandlord
a written notice of exercise.  Payment of charges for parking  spaces  subleased
hereunder  shall be deemed  additional  rent due and  payable  in advance on the
first day of each calendar month during the term of this Sublease.  If Subtenant
fails to pay for any parking charges in a timely manner,  Sublandlord  shall not
be required to advance any amounts for Subtenant,  Subtenant shall be in default
and, in addition to any other rights  Sublandlord  may have,  Sublandlord  shall
have the right to cancel the  sublease of the parking  spaces for which  payment
was not received.

     As of the date of this Sublease, Sublandlord is subleasing to third parties
some or all of the parking  spaces  which are to be made  available to Subtenant
hereunder. Sublandlord has the right to terminate the existing subleases upon 30
days' notice to the parties subleasing those spaces. Upon Subtenant exercising

                                   - 4 -

Patina sub lease

<PAGE>



its options hereunder,  Sublandlord will give termination notices to the parties
subleasing those spaces, and will make the spaces available to Subtenant as soon
as reasonably  practicable  hereunder.  Sublandlord  shall have no liability for
delays in delivering such spaces to Subtenant.  Subtenant's sole remedy shall be
delay in paying for such spaces until they are made available to Subtenant.

      If  Subtenant  no longer  desires to  sublease  some or all of the parking
spaces,  Subtenant  may cancel its sublease of any or all of the parking  spaces
from time to time by giving  written  notice to  Sublandlord.  Unless  otherwise
agreed to in writing by Sublandlord,  such cancellation  shall be effective only
at the end of a  calendar  month and no sooner  than the last day of the  second
full  calendar  month  after  the  notice  of   cancellation   is  delivered  to
Sublandlord.

      If  Subtenant's  sublease of any parking space is  cancelled,  such spaces
shall no longer be deemed available to Subtenant, and Sublandlord shall be under
no obligation to provide those spaces to Subtenant.  If Subtenant seeks to again
sublease  all or a portion of the parking  spaces so  relinquished,  Sublandlord
shall use reasonable efforts  re-sublease such parking spaces to Subtenant,  but
in no event will  Sublandlord be obligated to re-sublease such parking spaces if
they are not available from the Lessor or if Sublandlord has other uses for such
spaces  (including  but not limited to use of such spaces by  Sublandlord or the
sublease  or  license  of such  spaces to other  users).  Subtenant's  rights to
parking  under  the  Sublease  shall at all  times be  subject  to the terms and
availability of such parking under the Master Lease.

      8. Services. Sublandlord shall not be obligated to provide any services to
Subtenant or repairs or maintenance to the Subleased  Premises,  the Building or
the Project. Subtenant's sole source of services shall be the Lessor pursuant to
the terms of the Master Lease; provided, however, upon the reasonable request of
Subtenant,  Sublandlord  will  provide  commercially  reasonable  assistance  to
Subtenant in enforcing  the terms of the Master  Lease which  require  Lessor to
provide  services,  repairs or  maintenance  to the  Subleased  Premises  or the
Building.  Sublandlord shall not be required to incur any out-of-pocket expenses
in providing such  assistance,  and Sublandlord may condition its providing such
assistance upon any such expenses being paid by Subtenant as they become due. In
the event that  Sublandlord  and Subtenant  are both involved in enforcing  such
terms  of the  Master  Lease,  Subtenant  shall  only  be  responsible  for  its
proportionate  share of such expenses  allocated to the Subleased  Premises.  If
there is any reduction or  discontinuance  of service as required to be provided
to the  Subleased  Premises by Lessor  under the Master Lease and as a result of
same Sublandlord is entitled to abatement of Rent or other sums, if any, payable
under the Master Lease, with respect to the Subleased  Premises,  then Subtenant
shall be entitled to an abatement of Rent and other sums, if any,  payable under
this  Sublease,  but only to the extent the  abatement  afforded to  Sublandlord
relates to the Subleased Premises.  Subtenant shall reimburse Sublandlord for an
equitable portion of Sublandlord's  out-of-pocket  cost incurred in enforcing an
abatement  of Rent  affecting  the  Subleased  Premises.  Sublandlord  makes  no
representations  or warranties as to the  availability  or adequacy of services.
Except as provided herein, Subtenant's covenants to pay Rent under this Sublease
are  separate and  independent  from any  covenant of  Sublandlord  or Lessor to
provide services or other amenities hereunder.

      Subtenant  shall not request any  additional  services from Lessor without
Sublandlord's prior approval, which approval shall not be unreasonably withheld,
provided  Subtenant is not then in default.  Subtenant shall promptly pay Lessor
directly for such services and provide Sublandlord with evidence of payment.

     9.  Signage.   Sublandlord   shall   cooperate  with  Subtenant  in  having
Subtenant's name and location of its office placed on the Building  directory in
the lobby of the Building, its name placed near the

                                   - 5 -

Patina sub lease

<PAGE>



elevator on the floor on which the Subleased  Premises are located and otherwise
in placing a placard designating Subtenant's name, either on the entrance to the
Subleased  Premises or immediately  adjacent thereto.  All such signage shall be
standard signage for the Building and subject to the approval of Lessor.

      10. Master Lease.  This Sublease is subject and  subordinate to the Master
Lease. The provisions of the Master Lease are incorporated into this Sublease as
the agreement of  Sublandlord  and Subtenant and are applicable to this Sublease
with the same  force and effect as though  Sublandlord  was  landlord  under the
Master Lease, and Subtenant was tenant under the Master Lease. Subtenant assumes
and agrees to make all payments  with respect to the  Subleased  Premises and to
perform and be bound by all of Sublandlord's covenants and obligations contained
in the Master Lease with respect to the Subleased Premises.  In the event of any
conflict between the terms and provisions of the Master Lease and this Sublease,
the terms and provisions of the Master Lease shall prevail and control.

      11. Default by Subtenant.  Subtenant shall not cause or allow to be caused
any default under the Master Lease,  nor shall  Subtenant  permit anything to be
done which would cause the Master Lease to be  terminated or forfeited by reason
of any right of termination or forfeiture reserved or vested in Lessor under the
Master Lease.  In the event of any breach by Subtenant under the Master Lease or
this Sublease,  Sublandlord shall have all the rights against Subtenant as would
be available  to the landlord  against the tenant under the Master Lease if such
breach were by the tenant thereunder including, but not limited to, the right to
terminate  Subtenant's  right to possession  of the  Subleased  Premises and any
options  granted  under this  Sublease and all other  rights and  remedies  upon
default as set forth in the Master Lease.

      12. Subtenant Indemnification. In addition to all other obligations it may
have under this Sublease, Subtenant shall indemnify, defend and hold Sublandlord
harmless from and against any losses, liabilities,  obligations,  damages, costs
and expenses (including reasonable attorneys' fees and costs) arising out of any
default under the Sublease or the Master Lease caused solely by Subtenant or its
employees,  agents or contractors;  provided,  however,  Subtenant shall have no
obligation  to  indemnify  Sublandlord  for matters  arising out of the default,
negligence or willful  misconduct of  Sublandlord  or its  employees,  agents or
contractors.

      13. Lessor Consent.  This Sublease is contingent upon Lessor consenting to
this Sublease and Lessor not  exercising its rights of first offer under Section
11.03 of the Master Lease.  Sublandlord shall submit this Sublease to Lessor for
its approval  promptly  after  execution  of this  Sublease by  Sublandlord  and
Subtenant.  Subtenant shall cooperate with  Sublandlord in providing  Lessor any
and all  information  concerning  Subtenant as Lessor may request in  connection
with  its  review  of this  Sublease  and  Subtenant.  If  Lessor's  consent  is
conditioned  and Subtenant and  Sublandlord  accept the consent  notwithstanding
such  conditions,  this Sublease  shall be subject to the conditions of Lessor's
consent.

      14. Future Assignment or Sublease. Subtenant shall not assign or otherwise
transfer,  mortgage,  pledge,  hypothecate  or  encumber  this  Sublease  or the
Subleased Premises,  or any interest therein, and shall not sublet the Subleased
Premises or any part thereof, or any right or privilege  appurtenant thereof, or
permit any other party to occupy the Subleased Premises, or any portion thereof,
without the written consent of Lessor and  Sublandlord,  which consent shall not
be  unreasonably   withheld  by  Sublandlord.   Sublandlord's   consent  to  any
assignment, transfer or subletting by Subtenant shall not relieve Subtenant from
any of its obligations under this Sublease.


                                   - 6 -

Patina sub lease

<PAGE>



      15.  Tenant  Alterations.  Subtenant  shall  make no  alteration,  change,
improvement,  repair,  replacement or addition to the Subleased Premises without
the prior written consent of Lessor and Sublandlord.  Sublandlord agrees that it
will not  unreasonably  withhold its consent to any of the foregoing.  Subtenant
shall  provide  to  Sublandlord  copies  of any and all  plans,  specifications,
notices and other  correspondence  delivered by Subtenant to Lessor which relate
to Subtenant's request for Lessor's approval hereunder. Notwithstanding anything
in this Sublease  that may imply to the  contrary,  Subtenant is not entitled to
and shall  not  receive  from  Sublandlord  any  Expansion  Allowance,  Painting
Allowance, Other Improvement Allowance (as those terms are defined in the Master
Lease) or any other  allowance  now or  hereafter  granted or made  available by
Lessor to  Sublandlord,  except  Subtenant  may be  entitled  to an  Improvement
Allowance  under  Section 21 and a Future  Expansion  Option under Section 20 of
this Sublease, if the terms and conditions of those Sections are satisfied.

      16.  Insurance.  Subtenant  shall  maintain,  throughout  the term of this
Sublease,  such policy or policies of insurance  with  respect to the  Subleased
Premises as  Sublandlord  is required to maintain  pursuant to the Master  Lease
including, but not limited to, the policies required pursuant to Section 9.02 of
the Master Lease.  The required  liability  policies shall name  Sublandlord and
Lessor as additional  insureds,  shall insure  performance of the indemnities of
Subtenant  contained  in this  Sublease  and shall be  primary  coverage  in the
instance of Subtenant's indemnities,  so that any insurance coverage obtained by
Lessor or Sublandlord  shall be in excess thereto.  All policies  required under
this  Sublease  shall be  endorsed  to  provide  a waiver of  subrogation  as to
Sublandlord and Lessor. Upon Sublandlord's  request from time to time, Subtenant
shall promptly deliver to Sublandlord  evidence that all premiums have been paid
and all policies are in full force and effect,  all in such form as  Sublandlord
may reasonably request.  All policies required under this Sublease shall include
an agreement  by the insurer that the policy shall not be canceled,  terminated,
modified or allowed to expire without 15 days' written notice to Sublandlord.

      17.  Hazardous  Materials.  Subtenant  shall not  (either  with or without
negligence) cause or permit the escape,  disposal or release of any biologically
or chemically active or other hazardous  substances or materials on or about the
Subleased  Premises or any other  portion of the  Project,  nor shall  Subtenant
allow  the  storage  or use of such  substances  or  materials  on or about  the
Subleased Premises or any other portion of the Project,  nor allow to be brought
into the Subleased  Premises or any portion of the Project any such materials or
substances. Without limitation, hazardous substances and materials shall include
those described in the Comprehensive  Environmental  Response,  Compensation and
Liability Act of 1980, the Resource Conservation and Recovery Act, the Superfund
Amendments and  Re-Authorization Act of 1986, the Occupational Safety and Health
Act,  the Clean Water Act,  and any  amendments  to such acts,  and any federal,
state or municipal laws, ordinances,  regulations or common law which may now or
hereafter  impose  liability on Lessor or Sublandlord  with respect to hazardous
substances.  Subtenant  shall  be  solely  responsible  for  and  shall  defend,
indemnify and hold Lessor and Sublandlord,  their agents and employees, harmless
from and against all claims,  costs and liabilities,  including attorneys' fees,
court costs and other expenses of litigation (1) arising out of or in connection
with any breach of this Section, or (2) arising out of or in any connection with
the removal,  cleanup and restoration work and materials necessary to return the
Subleased  Premises  and the Project and any other  property of whatever  nature
located  therein  to  their  condition  existing  prior to the  introduction  of
hazardous  materials in or about the Sublease Premises or Project. If any lender
or governmental  agency shall ever require  testing to ascertain  whether or not
there has been any hazardous material on or about the Subleased Premises (or, as
a result of  Subtenant's  actions,  on or about other  portions of the Project),
then the cost thereof  shall be  reimbursed  by Subtenant  to  Sublandlord  upon
demand. In addition, Subtenant shall execute affidavits, representations and the
like  from  time  to  time  at  Lessor's  or  Sublandlord's  request  concerning
Subtenant's knowledge and belief regarding the presence of

                                   - 7 -

Patina sub lease

<PAGE>



hazardous  substances  or  materials  on  the  Subleased  Premises.  The  within
covenants and indemnities shall survive the expiration or earlier termination of
the term of this Sublease.

      18.  Termination  of Master Lease.  Sublandlord  shall not do or suffer or
permit  anything to be done which would  constitute  a default  under the Master
Lease or would cause the Master Lease to be canceled, terminated or forfeited by
virtue of any rights of  cancellation,  termination  or  forfeiture  reserved or
vested in the Lessor  under the Master  Lease.  Notwithstanding  the  foregoing,
Sublandlord may  voluntarily  terminate the Master Lease during the term of this
Sublease  provided  Lessor  agrees in writing to treat  such  termination  as an
assignment of this Sublease by Sublandlord  to Lessor.  In the event of any such
termination,  Subtenant  shall be bound to Lessor for the balance of the term of
this Sublease as if Lessor were the Sublandlord  under this Sublease,  Subtenant
shall attorn to Lessor as its landlord,  Sublandlord  shall be released from any
liability with respect to such  termination and no liability or obligation shall
thereafter accrue against Sublandlord with respect to this Sublease.

      19.  Sublandlord  Indemnification.  Sublandlord  shall  perform all of its
obligations  as tenant  under the Master  Lease.  Sublandlord  shall  indemnify,
defend  and  hold  Subtenant  harmless  from  and  against  any and all  losses,
liabilities,  obligations,  damages,  costs and expenses  (including  reasonable
attorneys'  fees and costs)  arising out of any default  under the Master  Lease
caused solely by Sublandlord or its employees, agents or contractors;  provided,
however, Sublandlord shall have no obligation to indemnify Subtenant for matters
arising out of the default, negligence or willful misconduct of Subtenant or its
employees, agents or contractors.

      20.  Rights of First  Offer.  Pursuant to Articles  30.00 and 31.00 of the
Master Lease,  Sublandlord  has been granted  certain rights of first offer (the
"Rights of First Offer") to lease  additional  space in the  Building.  Provided
Subtenant is not then in default under this  Sublease and provided  further that
Sublandlord  does not intend to lease the  subject  Offer Space for its own use,
Sublandlord  will promptly  forward to Subtenant a copy of any written notice of
available  First Offer Space or Second  Offer  Space (the "Offer  Space")  which
Sublandlord  receives  from Lessor under  Article  30.00 or Article 31.00 of the
Master Lease. Upon all of the following conditions being satisfied,  Sublandlord
will exercise its right to lease the Offer Space, in which event Subtenant shall
sublease the Offer Space  specified in such notice upon the terms and conditions
herein set forth:

            (a) Subtenant shall deliver to Sublandlord an unconditional, written
      notice of  Subtenant's  exercise  of its right to lease such Offer  Space,
      which  notice must be received by  Sublandlord  at least one  business day
      prior to the date upon which  Sublandlord is required to deliver to Lessor
      its notice of exercise under Section 30.02 or 31.02 of the Master Lease;

            (b) Subtenant  shall not be in default beyond any applicable  notice
      and cure period under the Sublease at the time Lessor gives notice,  or at
      the  commencement  date of the Sublease of the Offer Space and there shall
      have  been no  material  adverse  change  in the  financial  condition  of
      Subtenant from the date of this Sublease;

            (c)  Sublandlord  does not desire to use the subject Offer Space for
      its own use, it being understood that Subtenant's  rights under the Rights
      of  First  Offer  shall at all  times  be  subordinate  to the  rights  of
      Sublandlord; and

            (d)   Lessor in fact leases such Offer Space to Sublandlord.

                                   - 8 -

Patina sub lease

<PAGE>



The terms of any  sublease  of the Offer Space will be exactly the same as those
on which Sublandlord  leases such space from Lessor,  the terms of which are set
forth  in  the  Master  Lease,  including  the  right  to any  Future  Expansion
Allowance,  but only to the extent  actually paid by Lessor and allocable to the
Offer  Space  which  Subtenant  subleases  hereunder.  Any  payments  of  Future
Expansion Allowance to Subtenant shall be contingent upon Sublandlord  receiving
payment from Lessor, and Sublandlord's receipt and approval of invoices and such
other  evidence that such funds have been spent for the design and  construction
of improvements  with the subject Offer Space,  as Subtenant may request.  It is
the intent of the parties  that any sublease of Offer Space be a net sublease to
Sublandlord,  and  Subtenant  shall  reimburse  Sublandlord  for any  reasonable
out-of-pocket  expenses  incurred  by  Sublandlord  in leasing  the Offer  Space
hereunder.  The  obligation  of  Subtenant  to sublease the Offer Space shall be
automatic upon satisfaction of the foregoing conditions.  Nonetheless, within 15
days of receipt from  Sublandlord,  Subtenant shall execute an amendment to this
Sublease to evidence any lease under this Section,  provided  such  amendment is
consistent  with the terms hereof.  Sublandlord  shall use good faith efforts in
providing Subtenant with notices from Lessor hereunder and otherwise  attempting
to make  available to Subtenant any Offer Space which is offered to  Sublandlord
under the Rights of First Offer.  Subtenant's remedies for Sublandlord's failure
to deliver any Offer Space in  accordance  with the  provisions of this Sublease
shall be limited to $10,000,  and  Subtenant  shall have no claim for and hereby
waives all rights to any other damages,  specific performance or any other legal
or equitable relief against Sublandlord or any other party.

      21.  Improvement  Allowance.  Sublandlord  shall  provide  an  improvement
allowance not to exceed $35,000 (the "Improvement Allowance") for the purpose of
contributing  toward the cost of any design,  engineering  and  construction  of
approved   improvements   within  the   Subleased   Premises   (the   "Leasehold
Improvements")  upon the terms and conditions  set forth herein.  Within 75 days
after  receipt  of  substantiating  invoices  and  lien  waivers  acceptable  to
Sublandlord  and  Lessor,  Sublandlord  shall pay to  Tenant an amount  equal to
invoices submitted for Leasehold Improvements, but not to exceed the Improvement
Allowance.  Any portion of the Improvement Allowance for which invoices have not
been  submitted  as of  November  1, 1999 shall be deemed  Sublandlord's  and no
longer  available to Subtenant,  and no Rent or any other amounts owed hereunder
shall be offset by such amount.  Subtenant  acknowledges that all or part of the
Improvement  Allowance will be funded by Sublandlord from allowances  granted to
Sublandlord  under the Master Lease.  Subtenant shall cooperate with Sublandlord
in  promptly   providing   to   Sublandlord   any  and  all   invoices,   plans,
specifications,  drawings and other  documentation as Sublandlord may reasonably
request, including, but not limited to, any such documents as may be required by
Lessor, in order to assure Sublandlord and Lessor that the Improvement Allowance
is properly payable hereunder.

     22.  Governing  Law.  This  Sublease  shall be governed by and construed in
accordance with the laws of the State of Colorado.

     23.  Severability.  Should any of the  provisions  of this  Sublease to any
extent be held to be invalid or  unenforceable,  the  remainder of this Sublease
shall continue in full force and effect.

     24. Entire Agreement.  This Sublease embodies the entire  understanding and
agreement  among the  parties  relative  to the matters  contained  herein,  and
supersedes  all  prior  negotiations,  understandings  or  agreements  in regard
thereto, whether written or oral.

     25.  Waiver.  No  provision of this  Sublease  may be waived,  except by an
agreement in writing signed by all of the parties  hereto.  A waiver of any term
or provision shall not be construed as a waiver of any other term or provision.

                                   - 9 -

Patina sub lease

<PAGE>



     26.  Headings.  The subject headings used in this Sublease are included for
purposes  of  reference   only,  and  shall  not  affect  the   construction  or
interpretation of any of its provisions.

     27.  Amendment.  This  Sublease may be amended,  altered or revoked only by
written instrument executed by all of the parties.

      28. Notices.  All notices required or permitted by this Agreement shall be
in writing and shall be given by personal delivery or sent to the address of the
party set forth below by registered or certified mail,  postage prepaid,  return
receipt  requested,  or  by  reputable  overnight  courier,   prepaid,   receipt
acknowledged.  Notices  shall be deemed  received  on the earlier of the date of
actual receipt or, in the case of notice by mail or overnight courier,  the date
of receipt  marked on the  acknowledgment  of receipt.  Rejection  or refusal to
accept or the  inability  to  deliver  because  of change of address of which no
notice was given  shall be deemed to be  received as of the date such notice was
deposited in the mail or delivered to the courier.

            If to Sublandlord:      Snyder Oil Corporation
                                    1625 Broadway, Suite 2200
                                    Denver, CO  80202

                                    Attn:  Rodney L. Waller

            If to Subtenant:        Patina Oil & Gas Corporation
                                    1625 Broadway, Suite 2000
                                    Denver, CO  80202

                                    Attn:  General Counsel

Any party may change its address to which notices should be sent to it by giving
the other parties  written  notice of the new address in the manner set forth in
this paragraph.

      29. Notices from Lessor.  Sublandlord  and Subtenant  shall use good faith
efforts to promptly  forward to one another copies of any notices  applicable to
this  Sublease or the Subleased  Premises  which either of them may receive from
Lessor under the Master Lease.

     30.  Construction.  All terms  used in this  Sublease  shall  have the same
meaning as assigned to them in the Master Lease  except as  otherwise  expressly
provided herein.

      31. Further Acts. Upon reasonable  request from a party hereto,  from time
to time,  each party shall  execute and deliver such  additional  documents  and
instruments  and take such other actions as may be reasonably  necessary to give
effect to the intents and purposes of this Sublease.

      32.  Attorneys'  Fees.  In the  event  of any  litigation  or  arbitration
proceedings  between the parties  hereto  concerning  the subject matter of this
Sublease,  the  prevailing  party  in such  litigation  or  proceeding  shall be
awarded,  in  addition  to the amount of any  judgment  or other  award  entered
therein, the costs and expenses,  including reasonable attorneys' fees, incurred
by the prevailing party in the litigation or proceeding.


                                   - 10 -

Patina sub lease

<PAGE>



     33.  Binding  Effect.  This Sublease shall be binding upon and inure to the
benefit of the parties hereto and their respective successors and assigns.

      34. Brokers.  Each party  represents and warrants to the other that it has
not  dealt  with any real  estate  broker  or  finder  in  connection  with this
Sublease.  Each party shall indemnify and hold harmless the other from any loss,
claim, damage,  obligation,  cost or expense,  including  reasonable  attorneys'
fees,  arising out of any claim made by any other broker or finder  claiming by,
through or under such party.

      35. Authority.  Each party represents and warrants unto the other that (a)
it is a duly  organized and existing legal entity under the laws of the State in
which it is organized, and in good standing and authorized to do business in the
State of Colorado,  (b) it has full right and authority to execute,  deliver and
perform this Sublease,  (c) the person  executing this Sublease is authorized to
do so, and (d) upon request of Sublandlord,  such person  executing on behalf of
Subtenant will deliver satisfactory  evidence of his or her authority to execute
this Sublease on behalf of Subtenant.

      36. Effective Date.  Pursuant to the Agreement and Plan of Merger between,
among  others,  Subtenant  and  Sublandlord,  Subtenant is  responsible  for the
occupancy costs for two floors of Sublandlord's  space under the Master Lease as
of May 1, 1996. The Subleased Premises represents the two floors contemplated by
that Agreement.  As of the Commencement Date, some of Subtenant's  employees are
occupying a portion of the Premises other than the Subleased Premises,  and some
of Sublandlord's employees may be occupying a portion of the Subleased Premises.
Subtenant  and  Sublandlord  will  relocate  their  respective  employees to the
Subleased Premises and the balance of the Premises, respectively, within 15 days
following  written  notice  given  by  the  other  party.   Notwithstanding  the
foregoing, Subtenant acknowledges that it has accepted delivery of the Subleased
Premises as of the Commencement Date.

      THIS  SUBLEASE is executed by the parties  effective  as of the date first
above written, notwithstanding the actual date of execution.

                                    SUBLANDLORD:

                                    SNYDER OIL CORPORATION,
                                    a Delaware corporation


                                    By:

                                    Its:



                                   - 11 -

Patina sub lease

<PAGE>
                                    SUBTENANT:

                                    PATINA OIL & GAS CORPORATION,
                                    a Delaware corporation


                                    By:

                                    Its:

                                   - 12 -
Patina sub lease

<TABLE> <S> <C>


<ARTICLE>                     5
                        
                       
<MULTIPLIER>                                     1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                          13,213
<SECURITIES>                                         0
<RECEIVABLES>                                   18,907
<ALLOWANCES>                                         0
<INVENTORY>                                      2,681
<CURRENT-ASSETS>                                35,078
<PP&E>                                         557,395
<DEPRECIATION>                                 141,488
<TOTAL-ASSETS>                                 455,475
<CURRENT-LIABILITIES>                           29,756
<BONDS>                                        220,913
                                0
                                         12
<COMMON>                                           199
<OTHER-SE>                                     191,339
<TOTAL-LIABILITY-AND-EQUITY>                   455,475
<SALES>                                         29,816
<TOTAL-REVENUES>                                30,110
<CGS>                                           21,096
<TOTAL-COSTS>                                   27,237
<OTHER-EXPENSES>                                   149
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,595
<INCOME-PRETAX>                                 (2,255)
<INCOME-TAX>                                      (394)
<INCOME-CONTINUING>                             (1,861)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    (1,861)
<EPS-PRIMARY>                                     (.16)
<EPS-DILUTED>                                     (.16)
        

</TABLE>


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