四川盆地川西坳陷中段构造演化对中三叠统雷口坡组油气成藏的控制作用

Petroleum Geology and Experiment(2021)

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Abstract
中三叠统雷口坡组在四川盆地川西坳陷中段的金马—鸭子河构造提交探明储量千亿立方米,新场、马井地区同样也获得了工业气流并提交控制、预测储量,但区内构造演化过程及油气成藏配置关系还不明确.通过对周缘露头、盆地内钻井样品的镜质体反射率、扫描电镜及流体包裹体等分析,并结合构造解释,明确了川西坳陷中段的局部构造最早形成于印支早期,对雷口坡组油气成藏起关键作用的构造演化时期为早—中侏罗世;通源断层或"接力式"断层输导系统可作为良好的天然气运移通道,有利于油气富集成藏;局部古构造高点以及储层、输导系统等关键成藏要素配置关系良好且后期构造形变破坏弱的地区为最有利勘探区.
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Key words
tectonic evolution,fault,hydrocarbon migration,hydrocarbon accumulation,leikoupo formation,middle triassic,middle section of western sichuan depression,sichuan basin
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