Parker Drilling Company (Parker) is a provider of contract drilling and drilling-related services. The Company operates in six segments: Rental Tools, U.S. Barge Drilling, U.S. Drilling, International Drilling, Technical Services and Construction Contract. During year ended December 31, 2012, the Company operated in 12 countries. The Company has operated in over 50 foreign countries and the United States. The Company's international drilling business includes operations related to Parker-owned and operated rigs, as well as customer-owned rigs. The Company's U.S. Drilling segment primarily consists of two new-design Arctic Alaska Drilling Unit (AADU) land rigs. The Company's construction contract segment includes only the BP-owned Liberty extended-reach drilling rig construction project. In April 2013, the Company announced the acquisition of International Tubular Services Limited and certain affiliates (ITS), subsidiaries of ITS Tubular Services (Holdings) Limited.