石油实验地质2011,Vol.33Issue(4):408-413,6.
中扬子南缘王村上寒武统古油藏成藏剖析
Accumulation of Upper Cambrian ancient reservoir in Wangcun, southern margin of middle Yangtze region
摘要
Abstract
Based on microscopic observation and micro-thermometry measurement of fluid inclusions, combined with basin simulation and crude oil pyrolysis calculation, it is discussed in this paper the Upper Cambrian reservoir in Wangcun, the southern margin of the middle Yangtze region. During the Caledonian period, the southern margin of the middle Yangtze region accepted hydrocarbon from the Lower Cambrian source rocks. In some regions, the Upper Sinian source rocks also worked as effective hydrocarbon kitchens. Wangcun, located on the slope, was the destination of hydrocarbon migration, resulting in primary pool. During the Early and Middle Triassic, primary pools in Sinian and the Middle and Lower Cambrian adjusted due to the Indosinian Movement and the Wangcun ancient reservoir was formed. From the Late Triassic to the Early Jurassic, the Wangcun ancient reservoir was buried deep as the result of flexing or thrust -nappe effect. Crude oils cracked rapidly and oil-cracking-gas source kitchen supplied hydrocarbon in succession. The Wangcun reservoir transformed to gas pool completely, accelerating the dissipation rate of oil and gas. Due to the strong deformations during Yangshan and Himalayan stages, the ancient reservoir finally disappeared.关键词
原油裂解气/成藏剖析/王村古油藏/上寒武统/中扬子区Key words
crude oil cracking gas/ accumulation analysis/ Wangcun ancient reservoir/ Upper Cambrian/ middle Yangtze region分类
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李艳霞,钟宁宁,林娟华,龙幼康,李净红..中扬子南缘王村上寒武统古油藏成藏剖析[J].石油实验地质,2011,33(4):408-413,6.基金项目
中国石油大学(北京)油气资源与探测国家重点实验室开放课题(2009002)资助. (北京)