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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Elm Coulee Oil Field ： ウィキペディア英語版 Elm Coulee Oil Field Elm Coulee Oil Field was discovered in the Williston Basin in Richland County, eastern Montana, in 2000. It produces oil from the Bakken formation and, as of 2007, is the "highest-producing onshore field found in the lower 48 states in the past 56 years."〔(''Wall Street Journal'', quoted in ''Big Sky Business Journal'' ).〕 By 2007, the field had become one of the 20 largest oil fields in the United States.〔(Petroleum Technology Transfer Council Newsletter, Vol. 9, 2006 ).〕〔(Energy Information Administration list of top 100 oil fields (link malfunction) ).〕 Geologist and independent oil man Richard Findley realized that the dolomitic middle Bakken member often had oil shows. He found a large area that showed promise; the area was too large for small operator like Findley, so he convinced Lyco Energy Resources to fund the project. A number of wells had drilled through the Bakken in Findley's project area, but had not tried to extract oil from it. Lyco re-entered nine old wells and completed them in the Bakken formation; the results were mixed, but showed that the middle Bakken had producible oil. In May 2000, Lyco drilled a well 500 feet laterally in the Bakken, hydraulically fractured it, and the well flowed 196 barrels of oil per day.〔(Sourcing an oil boom ), GeoExPro.〕 The field exploits horizontal drilling technology by perforating the productive rocks parallel to the beds, rather than through a vertical well perpendicular to the relatively thin Bakken formation. At Elm Coulee Field, the Bakken is only about 45 feet (15 m) thick and lies at depths of 8,500 to 10,500 feet (2,600–3,200 m), but horizontal wells penetrate 3,000 to 5,000 feet (900–1,500 m) of the reservoir rock, a porous dolomite of Devonian age that probably originated as a large carbonate bank on the western flank of the basin. The field is a stratigraphic trap.〔(Elm Coulee Field, Middle Bakken Member, by Bill Walker, Al Powell, Dick Rollins, and Ron Shaffer, 2006 ).〕 In 2006, Elm Coulee was producing about of oil per day from more than 350 wells. Ultimate production is expected to exceed ,〔(Elm Coulee Field ).〕 with some estimates as high as .〔(USGS estimates of Bakken oil production ).〕 Production at Elm Coulee has more than doubled the oil output of the state of Montana, from around in 2000 to almost in 2006. However, Montana production fell again starting in 2007, down to some in mid-2009.〔(Jennifer McKee, Montana ''Standard'' State Bureau, Dec. 2, 2007 ).〕〔(Production figures for Montana by EIA )〕 ==References== 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「Elm Coulee Oil Field」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.