Grey Wolf serves major and independent oil and gas companies with a fleet of nearly 130 rigs. The company offers contract oil and gas land drilling services in the United States. Located in one of the nation s most prolific natural gas regions, the company s operating divisions include south Texas, Gulf Coast, Ark-La-Tex and Mississippi/Alabama areas, west Texas and Rocky Mountains. Approximately 95 percent of the wells it drills on a day work and turnkey basis are targeted to natural gas. Grey Wolf is located in Houston.