轮南天窗型古潜山油气藏

China Petroleum Exploration(2009)

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Abstract
轮南古潜山油气藏是塔里木盆地发现的一个超大型碳酸盐岩古潜山油气藏,潜山相对高度为1000~1500m,面积为10000km2,埋深为4100m,潜山主要储集体为奥陶系碳酸盐岩风化壳岩溶裂缝—溶洞系统;潜山周围斜坡由巨厚的上奥陶统泥岩、石炭系泥岩构成披覆盖层,但在潜山顶部有一个80km2的区域为巨厚的三叠系含水砂岩所覆盖,形成古潜山的天窗区。由于天窗的存在从而形成了一种特殊类型的油气藏——天窗型古潜山油气藏。天窗型古潜山油气藏的油气主要分布在潜山斜坡部位,而潜山的高部位为水区或含油水区;天窗型古潜山油气藏油水界面是倾斜的,油气藏具有水动力特征。
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Key words
dynamic accumulation,top-opening buried hill reservoir,hydrodynamic trap,top window,Tarim Basin,Lunnan buried hill
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