中阿拉伯盆地Khuff—Sudair组油气藏地质特征及成藏模式  

Geological Characteristics and Hydrocarbon Accumulation Model of the Upper Paleozoic Khuff-Lower Mesozoic Sudair Play in the Central Arab Basin

作　　者：贾小乐[1] 何登发[1] 童晓光 王玉梅 贾爱婷 陶亲娥[5] 

机构地区：[1]中国地质大学海相储层演化与油气富集机理教育部重点实验室,北京100083 [2]中国石油天然气勘探开发公司,北京100034 [3]中国石油新疆油田分公司实验检测研究院,新疆克拉玛依834000 [4]中国石油新疆油田分公司采油二厂,新疆克拉玛依834000 [5]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《新疆石油地质》2014年第3期369-374,共6页Xinjiang Petroleum Geology

基　　金：中石油科技重大专项(2008E-060903)

摘　　要：Khuff—Sudair组油气成藏组合是中阿拉伯盆地重要的油气成藏组合。通过对该成藏组合古地理演化、烃源岩、储集层、盖层、成藏过程和模式的分析认为,下志留统Qusaiba段烃源岩于中侏罗世卡洛夫期开始生油,早白垩世土仑期开始生气;生成的油气通过断层、裂缝垂直运移和上覆地层砂岩水平运移到上二叠统Khuff组储集层内;下三叠统Sudair组提供了有效的区域盖层;由于石油的生成和排烃早于圈闭的形成,所以很难聚集成藏,而天然气的生成和排烃时间与圈闭的形成时间一致,所以天然气在基底活动形成的构造圈闭中聚集成藏。目前世界最大的天然气田North-South Pars气田特有的Khuff—Sudair组油气成藏组合是中阿拉伯盆地今后油气勘探的重点。The Khuff-Sudair play is an important play in Persian Gulf Basin. This paper studied the paleogeography evolution, hydrocarbon source rocks, reservoir rocks, cap rocks and hydrocarbon accumulation process and model of the Khuff-Sudair play. The Lower Silurian Qusaiba source rock was deposited in anoxic marine shelf in fast subsiding depo-center of Arabian platform. Its source rock went into oil window in the Callovian period of Late Middle Jurassic and into gas window in the Early Cretaceous-Turonian period. The oil and gas migrated vertically through faults and fractures and horizontally through overlying sandstone into the Khuff reservoir of the Upper Permian. The Sudair formation of Lower Triassic provided an effective regional seal. The time of oil generation and expulsion was earlier than the time of trap formation, so the oil was difficult to accumulate. The time of gas generation and expulsion was at the same time with the trap formation, so the gas accumulation occurred in the structural trap formed by the basal activity. The Upper Paleozoic Khuff-Lower Mesozoic Sudair play in the North-South Pars gas field could be a major target for petroleum exploration in the Mid-Arab ersian Gulf basin in the future.

关 键 词：中阿拉伯盆地 Khuff—Sudair组油气成藏组合 Qusaiba组烃源岩 Khuff组储集层 断层 裂缝 成藏模式 

分 类 号：TE112.41[石油与天然气工程—油气勘探]