-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 BbtZGsqtqlbVkWrs4KmB4goXle/9kpeUzbOFYIuALeZdjOvr7XtCAuvMrPvGyJ8v
 m6/9Exta1ysXotSj/20EYw==

<SEC-DOCUMENT>0000950123-95-002857.txt : 19951012
<SEC-HEADER>0000950123-95-002857.hdr.sgml : 19951012
ACCESSION NUMBER:		0000950123-95-002857
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		19951011
SROS:			NYSE

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ENTERRA CORP /DE/
		CENTRAL INDEX KEY:			0000353181
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-EQUIPMENT RENTAL & LEASING, NEC [7359]
		IRS NUMBER:				232154837
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-33974
		FILM NUMBER:		95579744

	BUSINESS ADDRESS:	
		STREET 1:		13100 NW FREEWAY 6TH FL
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
		BUSINESS PHONE:		7134627300

	MAIL ADDRESS:	
		STREET 1:		13100 N W FREEWAY 6TH FL
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST RESERVE CORP /CT/ /ADV
		CENTRAL INDEX KEY:			0000814313
		STANDARD INDUSTRIAL CLASSIFICATION:	 []
		IRS NUMBER:				061210123
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		475 STEAMBOAT RD
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		2036616601

	MAIL ADDRESS:	
		STREET 1:		475 STEAMBOAT RD
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST RESERVE CORP /CT/                                 /ADV
		DATE OF NAME CHANGE:	19950630
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<DESCRIPTION>FINAL AMENDMENT TO SCHEDULE 13D
<TEXT>

<PAGE>   1

 
 
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                  SCHEDULE 13D
 
                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (FINAL AMENDMENT)*
 
                              ENTERRA CORPORATION
               -------------------------------------------------
                                (NAME OF ISSUER)
 
                     COMMON STOCK, PAR VALUE $.01 PER SHARE
               -------------------------------------------------
                         (TITLE OF CLASS OF SECURITIES)
 
                                   293805107
               -------------------------------------------------
                                 (CUSIP NUMBER)
 
                                ELIZABETH FOLEY
                           FIRST RESERVE CORPORATION
                               475 STEAMBOAT ROAD
                          GREENWICH, CONNECTICUT 06830
                                 (203) 661-6601
               -------------------------------------------------
(NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO RECEIVE NOTICES AND
                                COMMUNICATIONS)
 
                                OCTOBER 5, 1995
               -------------------------------------------------
            (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT)
 
     If the filing person has previously filed a statement on Schedule 13G 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  / /.
 
     Check the following box if a fee is being paid with the statement  / /. (A
fee is not required only if the reporting person: (1) has a previous statement
on file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)
 
     NOTE: Six copies of this statement, including all exhibits, should be filed
with the Commission. See Rule 13d-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).

                              PAGE 1 of 6 PAGES
<PAGE>   2
 
                                  SCHEDULE 13D
 
<TABLE>
<S>                                                 <C>
- ----------------------------------------            ----------------------------------------
  CUSIP NO. 293805107                               PAGE 2 OF 6 PAGES
- ----------------------------------------            ----------------------------------------
- ----------------------------------------------------------------------------------------------
    1       NAME OF REPORTING PERSON
            S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
            FIRST RESERVE CORPORATION
- ----------------------------------------------------------------------------------------------
    2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*              (a) / /
                                                                           (b) / /
- ----------------------------------------------------------------------------------------------
    3       SEC USE ONLY
- ----------------------------------------------------------------------------------------------
    4       SOURCE OF FUNDS*
            OO (see item 3)
- ----------------------------------------------------------------------------------------------
    5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
            PURSUANT TO ITEMS 2(d) or 2(e)                                               /  /
- ----------------------------------------------------------------------------------------------
    6       CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
- ----------------------------------------------------------------------------------------------
                        7           SOLE VOTING POWER
                                    0
  NUMBER OF             ----------------------------------------------------------------------
  SHARES                8           SHARED VOTING POWER                                         
  BENEFICIALLY                      0                                                           
  OWNED BY              ----------------------------------------------------------------------
  EACH                  9           SOLE DISPOSITIVE POWER                                      
  REPORTING                         0                                                           
  PERSON                ----------------------------------------------------------------------
  WITH                  10          SHARED DISPOSITIVE POWER                                    
                                    0                                                           
- ----------------------------------------------------------------------------------------------
   11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            0
- ----------------------------------------------------------------------------------------------
   12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
            EXCLUDES CERTAIN SHARES*                                                     / /
- ----------------------------------------------------------------------------------------------
   13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            No shares of common stock, par value $1.00 per share, of
            Enterra Corporation remain outstanding.
- ----------------------------------------------------------------------------------------------
   14       TYPE OF REPORTING PERSON*
            CO
- ----------------------------------------------------------------------------------------------
</TABLE>
 
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
       (INCLUDING EXHIBITS) OF THE SCHEDULE AND THE SIGNATURE ATTESTATION

<PAGE>   3
 
     Amendment No. 2 to the Statement on Schedule 13D filed on July 3, 1995
on behalf of First Reserve Corporation, a Delaware corporation, American
Gas & Oil Investors, Limited Partnership, a New York limited partnership, AmGO
II, Limited Partnership, a New York limited partnership, AmGO III, Limited
Partnership, a New York limited partnership, First Reserve Secured Energy Assets
Fund, Limited Partnership, a Delaware limited partnership, First Reserve Fund V,
Limited Partnership, a Delaware limited partnership, First Reserve Fund V-2,
Limited Partnership, a Delaware limited partnership and First Reserve Fund VI,
Limited Partnership, a Delaware limited partnership (hereinafter collectively
referred to as the "Filing Persons"), relating to the common stock, par value
$1.00 per share, of Enterra Corporation, a Delaware corporation (the "Company")
is hereby amended and supplemented as follows:
 
ITEM 2.  IDENTITY AND BACKGROUND.
 
     The merger of the Company with and into Weatherford International
Incorporated ("Weatherford") was approved by (i) the stockholders of Weatherford
at a special meeting of such stockholders held on October 5, 1995, and (ii) the
stockholders of the Company at a special meeting of stockholders held on October
5, 1995. The certificate of merger was filed with the Secretary of State of the
State of Delaware on October 5, 1995, and the merger became effective upon such
filing (the "Weatherford Merger").


                              PAGE 3 of 6 PAGES
<PAGE>   4

 
ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.
 
     As a result of the Weatherford Merger, no shares of common stock, par value
$1.00 per share ("Company Common Stock"), of the Company remain outstanding.
Each issued and outstanding share of Company Common Stock was converted into the
right to receive 1.69 shares of Common Stock of Weatherford ("Weatherford Common
Stock"), before giving effect to the Reverse Stock Split (as defined in the
Agreement and Plan of Merger, dated as of June 23, 1995, as amended as of August
28, 1995) (0.845 of a share of Weatherford Common Stock after giving effect to
the Reverse Stock Split).


                              PAGE 4 of 6 PAGES
<PAGE>   5
 
                                   SIGNATURE
 
     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this Statement is true, complete and
correct.
 
                                          FIRST RESERVE CORPORATION
 
                                          By: /s/  ELIZABETH C. FOLEY
                                            ------------------------------------
                                            Name: Elizabeth C. Foley
                                            Title:  Treasurer
 
                                          AMERICAN GAS & OIL INVESTORS,
                                          LIMITED PARTNERSHIP
 
                                          By: First Reserve Corporation,
                                            as Managing General Partner
 
                                          By: /s/  ELIZABETH C. FOLEY
                                            ------------------------------------
                                            Name: Elizabeth C. Foley
                                            Title:  Treasurer
 
                                          AMGO II, LIMITED PARTNERSHIP
 
                                          By: First Reserve Corporation,
                                            as Managing General Partner
 
                                          By: /s/  ELIZABETH C. FOLEY
                                            ------------------------------------
                                            Name: Elizabeth C. Foley
                                            Title:  Treasurer
 
                                          AMGO III, LIMITED PARTNERSHIP
 
                                          By: First Reserve Corporation,
                                            as Managing General Partner
 
                                          By: /s/  ELIZABETH C. FOLEY
                                            ------------------------------------
                                            Name: Elizabeth C. Foley
                                            Title:  Treasurer


                              PAGE 5 of 6 PAGES
<PAGE>   6
 
                                          FIRST RESERVE FUND V, LIMITED
                                          PARTNERSHIP
 
                                          By: First Reserve Corporation,
                                            as Managing General Partner
 
                                          By: /s/  ELIZABETH C. FOLEY
                                            ------------------------------------
                                            Name: Elizabeth C. Foley
                                            Title:  Treasurer
 
                                          FIRST RESERVE FUND V-2, LIMITED
                                          PARTNERSHIP
 
                                          By: First Reserve Corporation,
                                            as Managing General Partner
 
                                          By: /s/  ELIZABETH C. FOLEY
                                            ------------------------------------
                                            Name: Elizabeth C. Foley
                                            Title:  Treasurer
 
                                          FIRST RESERVE FUND VI, LIMITED
                                          PARTNERSHIP
 
                                          By: First Reserve Corporation,
                                            as Managing General Partner
 
                                          By: /s/  ELIZABETH C. FOLEY
                                            ------------------------------------
                                            Name: Elizabeth C. Foley
                                            Title:  Treasurer
 
DATED: October 5, 1995


                              PAGE 6 of 6 PAGES
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
