Vintage Petroleum 10-K 2004 FY Annual report

EXHIBIT 23.4

DEGOLYER AND MACNAUGHTON

Canada Limited

311 – 6th Avenue SW, Suite 1430

Energy Plaza, East Tower

Calgary, Alberta, Canada T2P 3H2

(formerly Outtrim Szabo Associates Ltd.)

March 11, 2005

Vintage Petroleum, Inc.

110 W. Seventh Street

Tulsa, Oklahoma

74119

Re: “Form 10-K Filing”

Dear Sir:

As Petroleum Engineers, we hereby consent to the inclusion of the information included in this Form 10-K with respect to the oil and gas reserves of Vintage Petroleum, Inc., for Canada, the future net revenues from such reserves, and the present value thereof, which information has been included in this Form 10-K in reliance upon the report of this firm and upon the authority of this firm as experts in petroleum engineering. We hereby further consent to all references to our firm included in this Form 10-K and to the incorporation by reference in the Registration Statements on Form S-8, Nos. 33-37505, 333-88297 and 333-53652, and the Registration Statement on Form S-3, No. 333-77619, of Vintage Petroleum, Inc. of such information.

Yours truly,

/s/ Colin Outtrim

Colin P. Outtrim, P. Eng.

Senior Vice President

DeGolyer and MacNaughton

Canada Limited