…The Gach Saran oil field was discovered in 1927, but production began in 1940, with oil being transported to Kharg Island by pipeline. The main oil layer is the Asmari limestone formation from the Oligocene to Miocene eras of the Tertiary period. The upper limestone is a shallow marine reef deposit, while the lower part is dolomite limestone. The porosity is extremely low at 8-10%, but the development of fractures and the application of hydraulic fracturing techniques have resulted in a production capacity of 15,000-25,000 barrels per day. … *Some of the terms mentioned in the "Asmari Limestone Formation" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ガッチサーラーン油田は1927年に発見されたが,生産開始は40年で,パイプラインでカーグ島へ送油される。主要油層は第三紀漸新世~中新世のアスマリ石灰岩層で,上部の石灰岩は浅海成の礁状堆積物であるが,下部は苦灰岩化した石灰岩である。孔隙率は8~10%ときわめて小さいが,フラクチャーの発達や水圧破砕法の適用によって生産能力は1万5000~2万5000バレル/日となっている。… ※「アスマリ石灰岩層」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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