Clayton Williams Energy, Inc. (NASDAQ: CWEI), will hold its third quarter results conference call on Thursday, October 27, 2011, at 2:30 p.m. Eastern Time (1:30 p.m. Central Time). CWEI expects to issue the news release sometime before the market opens on Thursday, October 27, 2011. Dial In – 800-901-5213Passcode – 28983054 A replay of the call will be available from 5:30 p.m. ET on October 27 th, until November 3 rd. To listen to the replay dial 888-286-8010 and enter passcode 79342999. This call is being webcast by Thomson Reuters and can be accessed at CWEI’s website at www.claytonwilliams.com (click on “Investor Relations”). The event will be archived for 90 days following the call. The webcast is also being distributed over Thomson Reuters Investor Distribution Network to both institutional and individual investors. Clayton Williams Energy, Inc. is an independent energy company located in Midland, Texas.