Exhibit 99.15
CONSENT OF INDEPENDENT PETROLEUM ENGINEERS
We hereby consent to the references to our firm and to our report on the estimated proved oil and natural gas reserve quantities of Chaparral Energy, Inc. and its consolidated subsidiaries presented as of December 31, 2006 and 2007, included in United Refining Energy Corp.’s Post Effective Amendment to its Registration Statement on Form S-4 as well as in the notes of the financial statements included therein (collectively, the “Form S-4”), to be filed with the Securities and Exchange Commission.
We further consent to the use of our name as it appears under the caption “Experts” in United Refining Energy Corp.’s Registration Statement on Form S-4.
/s/ LEE KEELING AND ASSOCIATES, INC. |
Tulsa, Oklahoma |
November 30, 2009 |