Atwood Oceanics, Inc. was an offshore drilling contractor headquartered in Houston, Texas. In October 2017, the company was acquired by Ensco plc. 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. 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. In fiscal 2015, the company derived 76% of its revenue from its 6 deepwater drillships and semisubmersibles. In fiscal 2015, 71% of the company's revenues were derived outside of the United States. The company derived more of its revenues in Australia than in any other country. History The company was founded in 1968 by John Atwood. The company began operation by 1970. In 1972, the company became a public company. In October 2017, the company was acquired by Ensco plc (now known as Valaris plc). See also 100 Fastest-Growing Companies 2010: All Stars - FORTUNE 100 Fastest-Growing Companies 2008: Atwood Oceanics - ATW - from FORTUNE Atwood Oceanics’ John Irwinto lead IADC into 21st Century Offshore career no ‘walkabout’for 2000 IADC Chair John Irwin Generations: a changing industry Exception GOODWYN ‘A’ DRILLING FACILITIES New Atwood jackup utilizes proven technology May 05 Connect IADC James Holland - Atwood Oceanics Inc (atw) Atwood Presentation - Credit Suisse Feb 8 May 04 Connect IADC Derek Morrow, Atwood Oceanics: From Scotsman to Aussie, he’s never looked back Atwood’s Holloway receives Exemplary Service Award Mark Childers awarded for service, innovation HBJ 2006 EOY References External links Non-renewable resource companies established in 1968 1968 establishments in Texas Non-renewable resource companies disestablished in 2017 2017 disestablishments in Texas 2017 mergers and acquisitions 1970s initial public offerings