文卫结合部构造-成藏(矿)旋回与演化

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运用矿床成矿系列的学术思想,分析文卫结合部的构造形态、断层组合、储层物性及流体性质等地质特征,提出了文(卫)断层是本区构造活动的主动力,同时也是油气聚集成矿的主控断层;探讨构造与成藏(矿)的配置关系,解决了圈闭成因、砂体指向、油气运移等技术难题。依据实际资料,指出新卫12井所在背科构造为古低分高构造,不应单以该井作判断本地区沙三段油气丰度的依据。明确本区经历两期油气运移,说明部分井有良好钻井显示而无工业产能的原因。同沉积断层附近盐韵律相变快,砂体最发育。运用构造-成藏(矿)理论论证卫西断阶带为尚未被探井钻遇的储油气构造。油气成藏(矿)系列的形成及其聚集特性,取决于该成藏(矿)系列形成时所在地质构造单元的特殊性。 Based on the academic thought of ore-forming series and analyzing the geological features of the tectonic forms, fault assemblages, reservoir properties and fluid properties of Wen-Wei junction, the Wen (Wei) fault is proposed to be the active force of tectonic activity in this area and also the oil and gas Gathering the main controlling fault of mineralization; discussing the configuration relationship between tectonics and reservoir forming (ore), and resolving the technical problems such as traps formation, sand body orientation and hydrocarbon migration. According to the actual data, it is pointed out that the structure of the Dabei Section of the Xinwei 12 well should be an ancient paleo-high structure. Therefore, it should not be used solely as a basis for judging the oil and gas abundance of the third member of the Es3 in this area. Clearly, the region experienced two periods of oil and gas migration, indicating that some of the wells have well-drilled wells without industrial capacity. Salt rhythm near the synsedimentary fault phase changes rapidly, the sand body the most developed. The structure-reservoir formation (ore) theory is used to demonstrate that the Weihe fault zone has been a hydrocarbon reservoir structure that has not been drilled by exploratory wells. The formation and accumulation characteristics of hydrocarbon accumulation (ore) series depend on the particularity of the geological tectonic units where the accumulation (ore) series was formed.
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