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                                                                    EXHIBIT 23.3

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

     As independent public accountants, we hereby consent to the incorporation
of our report included in the Barrett Resources Corporation Annual Report on
Form 10-K for the year ended December 31, 2000 and to all references to our Firm
included in or made part of this registration statement on Form S-4.

                                          ARTHUR ANDERSEN LLP

Denver, Colorado,

June 27, 2001.