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The Al Shaheen Oil Field is a production oil and gas field off the north east coast of Qatar in the Persian Gulf, north of Doha. The oil field lies over the North Gas Field, one of the largest oil field in the world. The field is operated by Maersk Oil Qatar AS of Denmark under a production sharing agreement with Qatar Petroleum, on behalf of the state of Qatar.〔 〕 ==History== Though well North West Deep-2, drilled by Shell in 1974, blew out briefly from the Shaheen reservoir, the oil field was only formally discovered in 1992 by Maersk Oil. The drilling of appraisal wells was completed in 1994 using horizontal drilling techniques.〔〔Sonowal, K., Bennetzen, B., Wong, P., Isevcan, E.; "How Continuous Improvement Lead to the Longest Horizontal Well in the World", SPE/IADC 119506, Presented at the SPE/IADC Drilling Conference and Exhibition held in Amsterdam, The Netherlands, 17–19 March 2009.〕 Regular oil production started the same year. In 1995–1996, production facilities were extended with subsea export pipelines, an additional single point mooring loading buoy, new process facilities and a STAR type wellhead platform.〔(【引用サイトリンク】 url= http://www.maerskoil.com/EN/AREASOFACTIVITY/QATAR/Pages/TheAlShaheenField.aspx )〕 In April 2004, the extension area north of block 5 was included to the production sharing agreement. Inauguration of new offshore facilities took place on 23 February 2005. In May 2008, ''GSF Rig 127'' operated by Transocean drilled the world record extended reach well BD-04A in the field. The well was drilled incident free to a record measured depth of including a record horizontal reach of in 36 days. From 2004 until August 2009 the massive supertanker, ''Knock Nevis'', the largest oil tanker built to date, was moored there as a floating storage and offloading unit (FSO). In January 2010, she was replaced by both the ''FSO Asia'', and in August 2010, the ''FSO Africa'' replaced the Astro Canopus. Both vessels are owned as a joint venture by Overseas Shipholding Group and Euronav. 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「Al Shaheen Oil Field」の詳細全文を読む スポンサード リンク
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