Atwood Oceanics, Inc. was an offshore drilling contractor headquartered in Houston, Texas.

[1] The company owned and operated 4 ultra-deepwater drillships, 2 ultra-deepwater semisubmersibles (can drill in water up to 12,000' deep), 2 deepwater semisubmersibles, and 5 high-specification jackup rigs.

[2] In fiscal 2015, 5 customers accounted for a total of 63% of revenues: Noble Energy, Royal Dutch Shell, Woodside Petroleum, Chevron Corporation, and Kosmos Energy.

[2] In fiscal 2015, the company derived 76% of its revenue from its 6 deepwater drillships and semisubmersibles.

[2] In October 2017, the company was acquired by Ensco plc[1] (now Valaris Limited).