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                               UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549

                                SCHEDULE 13D
                 Under the Securities Exchange Act of 1934
                             (Amendment No. 1)


                       BARRETT RESOURCES CORPORATION
        ------------------------------------------------------------
                              (Name of Issuer)

                      Common Stock, Par Value $.01 Per
                 Share (including the associated preferred
                           stock purchase rights)
        ------------------------------------------------------------
                      (Title of Class and Securities)

                                 068480201
        ------------------------------------------------------------
                               (CUSIP Number)

                         William G. von Glahn, Esq.
                 Senior Vice President and General Counsel
                        The Williams Companies, Inc.
                            One Williams Center
                           Tulsa, Oklahoma 74172
                         Telephone: (918) 573-2000

                              With a copy to:

                           Morris J. Kramer, Esq.
                         Richard J. Grossman, Esq.
                  Skadden, Arps, Slate, Meagher & Flom LLP
                             Four Times Square
                             New York, NY 10036
                          Telephone: 212-735-3000
        ------------------------------------------------------------
          (Name, Address and Telephone Number of Person Authorized
                   to Receive Notices and Communications)

                                July 3, 2001
        ------------------------------------------------------------
                       (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 that is the subject of this Schedule 13D, and is
filing this schedule because of Sections 240.13d-1(e), 240.13d-1(f) or
240.13d-1(g), check the following box. [ ]


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                                SCHEDULE 13D

     CUSIP No. 068480201
     -------------------------------------------------------------------
     1.   NAMES OF REPORTING PERSONS/
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)
          The Williams Companies, Inc.
          IRS Id. No: 73-0569878
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     2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                           (a)  ( )
                                                           (b)  ( )
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     3.   SEC USE ONLY

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     4.   SOURCE OF FUNDS*
          BK
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     5.   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
          PURSUANT TO ITEM 2(d) or 2(e)                    (  )

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     6.   CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
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                                   7.   SOLE VOTING POWER
           NUMBER OF                    0
            SHARES                --------------------------------------
         BENEFICIALLY              8.   SHARED VOTING POWER
           OWNED BY                     16,730,502
             EACH                 --------------------------------------
           REPORTING               9.   SOLE DISPOSITIVE POWER
            PERSON                      0
             WITH                 --------------------------------------
                                   10.  SHARED DISPOSITIVE POWER
                                        16,730,502
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     11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                             16,730,502
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     12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN
          SHARES                                        (  )
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     13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11

                                   50.0%(1)
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     14.  TYPE OF REPORTING PERSON
          CO


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1    Based on the 33,479,127 shares issued and outstanding as of the close
     of business on July 2, 2001.



SCHEDULE 13D

     CUSIP No.  068480201
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     1.   NAMES OF REPORTING PERSONS/
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)
          Resources Acquisition Corp.
          IRS Id. No:  73-1613076
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     2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                           (a)  ( )
                                                           (b)  ( )
     -------------------------------------------------------------------
     3.   SEC USE ONLY

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     4.   SOURCE OF FUNDS*
          AF
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     5.   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
          PURSUANT TO ITEM 2(d) or 2(e)                    (  )

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     6.   CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
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                                    7.   SOLE VOTING POWER
           NUMBER OF                     0
            SHARES                 -------------------------------------
         BENEFICIALLY               8.   SHARED VOTING POWER
           OWNED BY                      16,730,502
             EACH                  -------------------------------------
           REPORTING                9.   SOLE DISPOSITIVE POWER
            PERSON                       0
             WITH                  -------------------------------------
                                   10.   SHARED DISPOSITIVE POWER
                                         16,730,502
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     11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 16,730,502
     -------------------------------------------------------------------
     12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN
          SHARES                                        (  )
     -------------------------------------------------------------------
     13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11

                                   50.0%(1)
     -------------------------------------------------------------------
     14.  TYPE OF REPORTING PERSON
          CO



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1    Based on the 33,479,127 shares issued and outstanding as of the close
     of business on July 2, 2001.



         The Williams Companies, Inc., a Delaware corporation ("Williams"),
and Resources Acquisition Corp., a Delaware corporation and a wholly-owned
subsidiary of Williams ("Pur chaser" and together with Williams, the
"Reporting Persons"), hereby file this Amendment No. 1 (this "Amendment No.
1") to amend and supplement the Statement on Schedule 13D originally filed
on June 15, 2001 by the Reporting Persons (the "Schedule 13D") with respect
to the shares ("Shares") of common stock, par value $.01 per Share
(including the associated preferred stock purchase rights), of Barrett
Resources Corporation, a Delaware corporation ("Barrett Re sources"). The
Schedule 13D was originally filed as the Final Amendment to the Schedule TO
with respect to the Reporting Persons' Schedule TO with respect to the
Shares acquired by Purchaser in a tender offer completed on June 11, 2001.
Capitalized terms used but not described herein shall have the meanings
ascribed thereto in the Schedule 13D. The Schedule 13D is hereby amended
and supplemented by this Amendment No. 1.

ITEM 4.  PURPOSE OF THE TRANSACTION

The response to Item 4 of the Schedule 13D is hereby amended and
supplemented to add the following:

         On July 3, 2001, Williams and Barrett Resources issued a joint
press release announcing that the registration statement on Form S-4, which
Williams filed on June 15, 2001 with the Securities and Exchange Commission
in connection with Williams' proposed merger with Barrett Resources
pursuant to the Agreement and Plan of Merger dated as of May 7, 2001, by
and among Williams, Purchaser and Barrett Resources, became effective on
July 2, 2001. A special meeting of Barrett Resources' stockholders to
approve the merger will be held at the Westin Hotel-Tabor Center, 1672
Lawrence Street, Denver, Colorado on Thursday, August 2, 2001 at 9:00 a.m.
Denver time. The joint press release issued by Williams and Barrett
Resources on July 3, 2001 is filed as Exhibit 99.1 to this Amendment No.1
and is incorporated herein by reference.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS

Item 7 is hereby amended by adding the following document as an exhibit:


Exhibit 99.1    Joint Press Release issued by Williams and Barrett Resources
                on July 3, 2001.



                                 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.

                                          RESOURCES ACQUISITION CORP.


                                          By:  /s/ Ralph A. Hill
                                              -----------------------------
                                          Name:  Ralph A. Hill
                                          Title: Senior Vice President


                                          THE WILLIAMS COMPANIES, INC.


                                          By:  /s/ Keith E. Bailey
                                              -----------------------------
                                          Name:  Keith E. Bailey
                                          Title: Chairman, President and
                                                 Chief Executive Officer

Dated: July 9, 2001



                             INDEX TO EXHIBITS

Exhibit
No.              Description

Exhibit 99.1     Joint Press Release issued by Williams and Barrett Resources
                 on July 3, 2001.