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Diamond Offshore Drilling, Inc. is a deepwater drilling contractor which provides drilling services to the oil and gas industry. The company's headquarters are located in Houston, Texas, but they have major offices in Australia, Brazil, Mexico, Scotland, Singapore and Norway.〔http://www.diamondoffshore.com〕 Diamond Offshore's beginnings can be traced back to the earliest days of the offshore drilling industry. Its predecessor companies were ODECO, Zapata Corporation, and Diamond M Drilling Co. In 1992, Diamond M Corporation purchased all of the outstanding stock of ODECO Drilling Inc. from ODECO Oil and Gas Co., a subsidiary of Murphy Oil. Shortly thereafter, Diamond M Corp. briefly changed its name to Diamond M-ODECO Drilling Inc. before becoming Diamond Offshore Drilling, Inc. in 1993. Diamond Offshore began trading on the New York Stock Exchange in October 1995 and acquired Arethusa (Offshore) Ltd. in April 1996. As of 2009, Diamond Offshore Drilling operates around 47 drilling rigs in all areas of the world.〔http://www.rigzone.com〕 On February 10, 2015, Diamond announced it would be ending the payment of a special dividend it had paid out for the last decade as it braces for a significant number of its ultra-deepwater rigs to be idled amid low oil prices. During the first six months of 2015, the company scrapped 7 of its rigs, and reported a Net Loss of US$ (165M), compared to Net Income of US$ 236M in the first 6 months of 2014. ==Diamond M Drilling Co.== In the early 1960s the onshore drilling company Brewster-Bartle went bankrupt. The banks that had become the owners of the company’s rigs contacted Don McMahon to take over the failed company. McMahon accepted the challenge and formed Diamond M Drilling Co. in 1964. He named the company after Diamond M Acres, his ranch near Simonton, Texas. McMahon took his company public in 1970 and expanded into offshore waters with the building and purchase of jack-up, barge, and semi-submersible rigs. In the early 1970s, Diamond M was one of the largest owners of barge rigs in the energy industry. The company continued to drill both on land and offshore. In the late 1970s, Western Oceanic tendered an offer to buy Diamond M. Unwilling to be purchased, Diamond sought and found a “white knight” in Kaneb Services, Inc. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Diamond Offshore Drilling」の詳細全文を読む スポンサード リンク
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