Clayton Williams Energy (CWEI) 8-K Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard

Exhibit 99.1

Stanley S. Beard

500 W. Texas Avenue, Suite 705

Midland, Texas 79701

December 1, 2008

Mr. Clayton W. Williams

Chairman of the Board

Clayton Williams Energy, Inc.

6 Desta Drive, Suite 3000

Midland, Texas 79705

Dear Clayton:

Please accept this letter as my resignation as a Director of Clayton Williams Energy, Inc. effective as of the date hereof.

It has been a pleasure to serve as a Director of the Company and I look forward to the Company’s great success in the future.

Very truly yours,

/s/ Stanley S. Beard 

Stanley S. Beard

SSB/mmb