EXHIBIT 23.5 CONSENT OF H.J. GRUY AND ASSOCIATES, INC. We hereby consent to the use of the name H.J. Gruy and Associates Inc. and of references to H.J. Gruy and Associates, Inc. and to the inclusion of and references to our reports, or information...

X.X. XXXX AND ASSOCIATES, INC.
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000 Xxxx Xxxxxx, Xxxxx 0000, Xxxxxxx, Xxxxx 00000 o TEL. (000) 000-0000
o FAX (000) 000-0000


                                                                    EXHIBIT 23.5

                   CONSENT OF X.X. XXXX AND ASSOCIATES, INC.


We hereby consent to the use of the name X.X. Xxxx and Associates Inc. and of
references to X.X. Xxxx and Associates, Inc. and to the inclusion of and
references to our reports, or information contained therein, dated March 10,
2000, and dated March 9, 2001, prepared for Xxxxxxx Resources, Inc. in the
Registration Statement on Amendment No. 1 to Form S-1 of Plains Exploration &
Production Company, L.P. for the filing dated on or about August 28, 2002.




                                              X.X. XXXX AND ASSOCIATES, INC.
                                              Texas Registration Number F-000637


                                              by: /s/ Xxxxxx Xxxxxxxxxx, P.E.
                                                 -------------------------------
                                              Xxxxxx Xxxxxxxxxx, P.E.
                                              Vice President



August 27, 0000
Xxxxxxx, Xxxxx