Clayton Williams Energy, Inc. is an oil and gas company engaged in the exploration for and production of oil and natural gas. The Company operates in Texas, Louisiana and New Mexico. The Company holds interests in approximately 3,190 gross (1,491.9 net) producing oil and gas wells and owned leasehold interests in approximately 680,000 gross (373,000 net) undeveloped acres. Its domestic operations consist of conducting its drilling, exploration and production activities in the United States. It focuses on developmental drilling. The Company is also engaged in finding reserves through exploratory drilling. Through its wholly owned subsidiary, Desta Drilling, L.P., the Company operates 14 drilling rigs, two of which it leases under long-term contracts. Its areas of operations include the Permian Basin, Giddings Area and other.