Unit Corporation, together with its subsidiaries, develops, acquires, and produces oil and natural gas properties in the United States. The company operates through Oil and Natural Gas and Contract Drilling segments. The Oil and Natural Gas segment explores for, acquires, develops, and produces oil and natural gas properties. The Contract Drilling segment is involved in the drilling of onshore oil and natural gas wells for a range of other oil and natural gas companies primarily in Oklahoma, and Texas. Its producing oil and natural gas properties, unproved properties, and related assets are primarily located in Oklahoma and Texas. Unit Corporation was incorporated in 1963 and is headquartered in Tulsa, Oklahoma.