Union Drilling, Inc. provides contract land drilling services and equipment primarily to onshore oil and natural gas producers in Arkansas, New York, Ohio, Oklahoma, Pennsylvania, Texas, and West Virginia, the United States. Union Drilling, Inc. offers drilling rigs, as well as the drilling crews and ancillary equipment to operate its drilling rigs. Union Drilling, Inc. rigs operate in unconventional natural gas producing areas, which are characterized by formations with very low permeability rock, such as shales, tight sands, and coal bed methane that require specialized drilling techniques to develop the natural gas resources. Union Drilling focuses on providing its services in the Appalachian and Arkoma basins, as well as the Barnett Shale formation. Union Drilling, Inc. offers drilling services also to customers engaged in developing unconventional natural gas formations. As of December 31, 2008, Union Drilling, Inc. owned and operated a fleet of 71 land drilling rigs. Union Drilling, Inc. was founded in 1997 and is based in Fort Worth, Texas.