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EXHIBIT 23.3
Holditch - Reservoir Technologies Consulting Services
Division of Schlumberger Technology Corporation
Equitable Center [SCHLUMBERGER LOGO APPEARS HERE]
1515 Poydras Street, Suite 1320
New Orleans, LA 70112
Tel: 504-523-2117
Fax: 504-523-3547
December 11, 2000
ATP Oil & Gas Corporation
4600 Post Oak Place, Suite 230
Houston, TX 77027-9726
Re: ATP Oil & Gas Corporation
Form S-1 Registration Statement
Gentlemen:
We hereby consent to the incorporation by reference of our name into the
Registration Statement Form S-1 of ATP Oil & Gas Corporation and Subsidiaries.
We hereby consent to the references to our firm under the heading "Experts" in
the prospectus included in the Registration Statement.
Very truly yours,
HOLDITCH - RESERVOIR TECHNOLOGIES CONSULTING SERVICES
/s/ W. Denton Copeland
--------------------------------
W. Denton Copeland, P.E.
Operations Manager
