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英旺油区延长组沉积物源主要来自东北方向,其发育主要为湖泊和三角洲沉积体系。三角洲沉积的特点主要是平面复合以及纵向叠加,其中,位于三角洲平原中的下分流河道和分流河道的砂体都是很好的储集体,对英旺油田庙湾区块长8油藏烃源岩的分布、构造特征、有利相带、低压等因素的系统分析研究,认为烃源岩为油气的形成提供了前提;分流河道提供了油气富集的空间;小型隆起构造提供老人油气优先富集的条件。
The main source of sediments in the Yanchang Formation of the Yingwang Oilfield comes from the northeast direction, and its development mainly consists of lacustrine and delta sedimentary systems. The delta sediments are mainly characterized by plane recombination and longitudinal superimposition. Among them, the sand bodies in the distributary channel and the distributary channel located in the delta plain are all good reservoirs. The reservoir of Chang 8 reservoir in Miaowan block of Yingwang Oilfield Rock distribution, tectonic features, favorable facies belts, low pressure and other factors. It is considered that hydrocarbon source rocks provide the precondition for the formation of oil and gas; distributary channel provides space for oil and gas enrichment; conditions of.