Clayton Williams Energy (CWEI) 10-K 2012 FY Annual report

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors 

Clayton Williams Energy, Inc.:

We consent to the incorporation by reference in the registration statements on Form S-8 (No. 33-68316) and on Form S-3 (No. 333-116825) of Clayton Williams Energy, Inc. and subsidiaries of our reports dated March 5, 2013 with respect to the consolidated balance sheets of Clayton Williams Energy, Inc. and subsidiaries as of December 31, 2012 and 2011, and the related consolidated statements of operations and comprehensive income (loss), stockholders' equity, and cash flows for each of the years in the three-year period ended December 31, 2012, and the effectiveness of internal control over financial reporting as of December 31, 2012, which reports appear in the December 31, 2012 annual report on Form 10-K of Clayton Williams Energy, Inc. and subsidiaries.

	/s/ KPMG LLP
Dallas, Texas
March 5, 2013