PATINA OIL & GAS CORP
SC 13D/A, 1997-12-19
CRUDE PETROLEUM & NATURAL GAS
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D. C. 20549

                                  SCHEDULE l3D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 2)*

                          PATINA OIL & GAS CORPORATION
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    703224105
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                                                    with a copy to:
Teri Freiberg                                       George J. Mazin
Stark Investments                                   Lowenstein, Sandler, Kohl,
1500 West Market Street                               Fisher & Boylan, P.A.
Mequon, WI 53092                                    65 Livingston Avenue
(414) 241-1810                                      Roseland, New Jersey  07068
                                                    (201) 992-8700
- --------------------------------------------------------------------------------
                       (Name, Address and Telephone Number
                         of Person Authorized to Receive
                           Notices and Communications)

                                November 14, 1997
- --------------------------------------------------------------------------------
                      (Date of Event which Requires Filing
                               of this Statement)

If the filing person has previously  filed a statement on Schedule l3G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

Note:  Six  copies of this  statement,  including  all exhibits, should be filed
with the  Commission.  See Rule l3d-1(a) for other parties to whom copies are to
be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

- --------------------------------------------------------------------------------
                               CUSIP NO. 703224105
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1) Names of Reporting Persons (S.S. or I.R.S. Identification Nos. of Above 
   Persons):

   Michael A. Roth and Brian J. Stark (filing as joint filers pursuant to Rule 
   13(d)1(f)(1))

- --------------------------------------------------------------------------------
2) Check the Appropriate Box if a Member of a Group (See Instructions):

       (a)                        Not
       (b)                        Applicable

- --------------------------------------------------------------------------------
3) SEC Use Only

- --------------------------------------------------------------------------------
4) Source of Funds (See Instructions):WC

- --------------------------------------------------------------------------------
5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) 
   or 2(e):
                                  Not Applicable

- --------------------------------------------------------------------------------
6) Citizenship or Place of Organization:

                United States

- --------------------------------------------------------------------------------
    Number of              7)  Sole Voting Power:                           0
                               -------------------------------------------------
    Shares Beneficially    8)  Shared Voting Power:                    726,230*
                               -------------------------------------------------
    Owned by
    Each Reporting         9)  Sole Dispositive Power:                       0
                               -------------------------------------------------
    Person   With:       10)   Shared Dispositive Power:               726,230*
                               -------------------------------------------------

- --------------------------------------------------------------------------------
11)  Aggregate Amount Beneficially Owned by Each Reporting Person:

                726,230*

- --------------------------------------------------------------------------------
12)  Check  if  the  Aggregate  Amount in Row (11) Excludes Certain Shares (See 
     Instructions):
                                 Not Applicable

- --------------------------------------------------------------------------------
13)  Percent of Class Represented by Amount in Row (11):

                4.38*

- --------------------------------------------------------------------------------
14)  Type of Reporting Person (See Instructions):           IN

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

*       Includes:  477,592 shares of the Issuer's  common stock,  par value $.01
        ("Shares")  beneficially owned by Reliant Trading upon the conversion of
        409,275 shares of the Issuer's  preferred stock and conversion of 68,317
        of the Issuer's warrants;  21,671 Shares  beneficially owned by Shepherd
        Trading Limited upon the conversion of 21,671 of the Issuer's  warrants;
        and  226,966  Shares  beneficially  owned  by  Staro  Partners  upon the
        conversion  of  191,710  shares  of the  Issuer's  preferred  stock  and
        conversion of 35,256 of the Issuer's warrants. See Item 2 and Item 5 for
        additional details.

- --------------------------------------------------------------------------------
Item 1: Security and Issuer:

This statement  relates to the common stock, par value $.01, of Patina Oil & Gas
Corporation  ("Shares").  The Issuer has principal  executive offices located at
1625 Broadway, Suite 2000, Denver, Colorado 80202.

Item 2: Identity and Background

1.
         a)       Name: Brian J. Stark
         b)       Residence or Business Address: 1500 West Market Street
                                                 Mequon, WI 53092
         c)       Occupation:       Investment Fund Manager
                                    Staro Asset Management, L.L.C., 
                                    Stark & Roth, Inc., Staro Partners
                                    1500 West Market Street
                                    Mequon, WI 53092
         d)       Convictions: none
         e)       Civil Proceedings: none
         f)       Citizenship: United States

2.
         a)       Name:   Michael A. Roth
         b)       Residence or Business Address: 1500 West Market Street
                                                 Mequon, WI 53092
         c)       Occupation:       Investment Fund Manager
                                    Staro Asset Management, L.L.C.,
                                    Stark & Roth, Inc., Staro Partners
                                    1500 West Market Street
                                    Mequon, WI 53092
         d)       Convictions: none
         e)       Civil Proceedings: none
         f)       Citizenship: United States

3.
         a)       Name: Staro Partners
         b)       State of Organization: Wisconsin
         c)       Principal Business: Securities Trading
         d)       Address of principal business: 1500 West Market Street
                                                 Mequon, WI 53092
         e)       Address of Principal Office: same
         f)       Convictions: none
         g)       Civil proceedings: none

4.
         a)       Name: Reliant Trading
         b)       State of Organization: Wisconsin
         c)       Principal Business: Securities Trading
         d)       Address of principal business: 1500 West Market Street
                                                 Mequon, WI 53092
         e)       Address of Principal Office: same
         f)       Convictions: none
         g)       Civil proceedings: none

5.
         a)       Name: Shepherd Trading Limited
         b)       State of Organization: British Virgin Islands
         c)       Principal Business: Securities Trading
                  Address of principal business: c/o International Fund
                                                 Administration, Ltd.
                                                 48 Par-La Ville Road, Suite 464
                                                 Hamilton, HM 11 Bermuda

         d)       Address of Principal Office: same
         e)       Convictions: none
         f)       Civil proceedings: none

Item 3:  Source and Amount of Funds or Other Consideration

         All funds  used by Reliant  Trading  to  purchase  Shares  acquired  by
Reliant Trading,  upon conversion of the Issuer's  preferred stock and warrants,
were  obtained  from the capital  contributed  by the limited  partners of Stark
Investments,  L.P. and general margin financing to Reliant Trading from brokers.
The amount of funds used in making the purchases was $3,616,434.  The funds used
by Shepherd  Trading Limited to purchase the Shares acquired by Shepherd Trading
Limited,  upon  conversion of the Issuer's  preferred  stock and warrants,  were
obtained  from the capital  contributed  by the  shareholders  of Shepherd  Fund
Limited.  The amount of funds used in making the purchase was $39,049. All funds
used by Staro  Partners to purchase  Shares  acquired  by Staro  Partners,  upon
conversion of the Issuer's preferred stock and warrants,  were obtained from the
assets of Staro  Partners.  The amount of funds used in making the  purchase was
$1,758,211.

Item 4:  Purpose of Transaction

         The acquisition of the Shares by Reliant  Trading,  by Shepherd Trading
Limited  and by Staro  Partners  are solely  for  investment  purposes.  Further
acquisitions,  sales or short sales of  securities of the Issuer may be made for
investment  purposes,  however,  neither  reporting  person has present plans or
intentions which relate to or would result in any of the  transactions  required
to be described in Item 4 of Schedule 13D.

Item 5:  Interest in Securities of the Issuer

         Based upon the information  contained in Patina Oil & Gas Corporation's
quarterly  report on Form 10-Q for the  quarterly  period  ending  September 30,
1997, there were issued and outstanding  16,581,230 Shares (including the Shares
owned by the reporting  persons upon conversion of the Issuer's  preferred stock
and warrants).  Messrs.  Stark and Roth beneficially own 726,230 Shares or 4.38%
of the Shares. 477,592 of such Shares are held by Reliant Trading. Messrs. Stark
and Roth  have  shared  power to vote or  direct  the vote and  shared  power to
dispose  or direct  the  disposition  of the  477,592  Shares by virtue of their
position as members of Staro Asset Management,  L.L.C.,  the managing partner of
Reliant  Trading.  21,671 of such Shares are held by Shepherd  Trading  Limited.
Messrs.  Stark and Roth have shared  power to vote or direct the vote and shared
power to  dispose or direct the  disposition  of the 21,671  Shares by virtue of
their position as investment  manager of Shepherd  Trading  Limited.  226,966 of
such Shares are held by Staro Partners. Messrs. Stark and Roth have shared power
to vote or direct the vote and shared power to dispose or direct the disposition
of the  226,966  Shares by virtue of their  position  as the  partners  of Staro
Partners.

         The  following  Table  details  the  transactions  by Reliant  Trading,
Shepherd  Trading  Limited and Staro Partners in Patina Oil & Gas  Corporation's
securities since for the last sixty (60) days: :

                            Shepherd Trading Limited

  Date                  Quantity            Price           Transaction Type

11/14/97                  589               $2.125           Open Mkt. Sale
11/13/97                1,566                2.000           Open Mkt. Sale
11/12/97                  174                2.0625          Open Mkt. Sale
11/11/97                  520                2.250           Open Mkt. Sale
10/30/97                1,731                2.0625          Open Mkt. Sale
10/29/97                2,025                2.25            Open Mkt. Sale
10/28/97                8,655                1.9375          Open Mkt. Sale
10/27/97               13,436                2.500           Open Mkt. Sale
10/16/97                2,385                9.875           Open Mkt. Purchase
10/16/97                8,347                9.875           Open Mkt. Purchase
10/16/97               49,355               32.250           Open Mkt. Sale
10/16/97               49,355               32.250           Open Mkt. Purchase
10/16/97                1,908                2.750           Open Mkt. Sale
10/15/97                8,627               10.194           Open Mkt. Sale
10/15/97                  578                2.750           Open Mkt. Sale
10/15/97               10,591               10.028           Open Mkt. Sale
10/13/97                7,125               10.000           Open Mkt. Sale
10/10/97                5,218               10.000           Open Mkt. Sale
10/09/97                9,198                9.953           Open Mkt. Sale
10/08/97                1,541                9.9375          Open Mkt. Sale
10/06/97                  300               10.000           Open Mkt. Sale
10/03/97                  481                9.9375          Open Mkt. Sale
10/01/97                1,392                9.9375          Open Mkt. Sale


                                 Reliant Trading

  Date                  Quantity             Price           Transaction Type

11/14/97                 1,854               $2.125           Open Mkt. Sale
11/13/97                 4,905                2.000           Open Mkt. Sale
11/12/97                   545                2.0625          Open Mkt. Sale
11/11/97                 1,636                2.250           Open Mkt. Sale
10/30/97                 5,454                2.0625          Open Mkt. Sale
10/29/97                 6,382                2.25            Open Mkt. Sale
10/28/97                27,271                1.9375          Open Mkt. Sale
10/27/97                 6,564                2.500           Open Mkt. Sale
10/16/97                 4,425                9.875           Open Mkt. Purchase
10/16/97                15,488                9.875           Open Mkt. Purchase
10/16/97                 3,540                2.750           Open Mkt. Sale
10/15/97                24,634               10.194           Open Mkt. Sale
10/15/97                 1,650                2.750           Open Mkt. Sale
10/14/97                30,243               10.028           Open Mkt. Sale
10/13/97                20,345               10.000           Open Mkt. Sale
10/10/97                14,902               10.000           Open Mkt. Sale
10/09/97                25,142                9.953           Open Mkt. Sale
10/08/97                 4,398                9.9375          Open Mkt. Sale
10/06/97                   700               10.000           Open Mkt. Sale
10/03/97                 1,375                9.9375          Open Mkt. Sale
10/02/97                 1,480                9.9375          Open Mkt. Sale
10/01/97                   249                9.9375          Open Mkt. Sale
9/24/97                    500                2.2500          Open Mkt. Sale

                                 Staro Partners

  Date                  Quantity             Price           Transaction Type

11/14/97                  957               $2.125           Open Mkt. Sale
11/13/97                2,529                2.000           Open Mkt. Sale
11/12/97                  281                2.0625          Open Mkt. Sale
11/11/97                  844                2.250           Open Mkt. Sale
10/30/97                2,815                2.0625          Open Mkt. Sale
10/29/97                3,293                2.25            Open Mkt. Sale
10/28/97               14,074                1.9375          Open Mkt. Sale
10/16/97                3,190                9.875           Open Mkt. Purchase
10/16/97               11,165                9.875           Open Mkt. Purchase
10/16/97                2,552                2.750           Open Mkt. Sale
10/15/97               11,539               10.194           Open Mkt. Sale
10/15/97                  772                2.750           Open Mkt. Sale
10/14/97               14,166               10.028           Open Mkt. Sale
10/13/97                9,530               10.000           Open Mkt. Sale
10/10/97                6,980               10.000           Open Mkt. Sale
10/09/97               13,160                9.953           Open Mkt. Sale
10/08/97                2,061                9.9375          Open Mkt. Sale
10/03/97                  644                9.9375          Open Mkt. Sale
10/02/97                  220                9.9375          Open Mkt. Sale
10/01/97                  359                9.9375          Open Mkt. Sale

     No other entity controlled by the reporting persons has traded Patina Oil &
Gas Corporation securities in the previous sixty (60) days.

Item 6: Contracts, Arrangements, Understandings or Relationships with Respect to
        Securities of the Issuer.




Item 7:  Material to be filed as exhibits.

         Exhibit 1: Agreement as to joint filing.




<PAGE>

                                    EXHIBIT 1

                          AGREEMENT AS TO JOINT FILING

                            Dated: December 18, 1997

     The undersigned hereby agree that the Schedule 13D/A with respect to Patina
Oil & Gas Corporation  dated as of the date hereof is filed on behalf of each of
the undersigned jointly, pursuant to Rule 13d-1(f)(1).


                                         /s/Brian J. Stark
                                         _________________________
                                         Brian J. Stark



                                         /s/Michael A. Roth
                                         __________________________
                                         Michael A. Roth


<PAGE>


                                    SIGNATURE

     After reasonable inquiry and to the best of the undersigned's knowledge and
belief,  the undersigned hereby certifies that the information set forth in this
statement is true, complete and correct.

                                       December 18, 1997


                                       /s/Brian J. Stark
                                       ______________________________
                                       Brian J. Stark


                                       /s/ Michael A. Roth
                                       ______________________________
                                       Michael A. Roth




ATTENTION:  INTENTIONAL  MISSTATEMENTS  OR OMISSIONS OF FACT CONSTITUTE  FEDERAL
CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001).



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