Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated March 1, 2007, relating to the consolidated financial statements and financial statement schedule of ATP Oil & Gas Corporation (which report expresses an unqualified opinion and includes an explanatory paragraph relating to the Company’s adoption of Statement of Financial Accounting Standards No. 123(R), “Share-Based Payment,” effective January 1, 2006) and management’s report on the effectiveness of internal control over financial reporting, appearing in the Annual Report on Form 10-K of ATP Oil and Gas Corporation for the year ended December 31, 2006, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.
/s/ Deloitte & Touche LLP
Houston, Texas
October 9, 2007
