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基于岩心观察、系统的微观岩石学和结构学特征研究以及压汞分析,发现裂缝在英西地区油气成藏过程中发挥重要作用:裂缝为英西地区重要的储集空间类型,压汞分析结果显示裂缝的总体积约占储集空间总体积的1/4~1/3;岩心和岩石薄片中均可见到较多裂缝中残留着原油,裂缝在油气成藏过程中是重要的油气运移通道;被盐类矿物完全充填的裂缝具有较强的封盖作用,利于保存油气.英西地区裂缝较为发育且控制着油气的富集与高产,利用裂缝地震预测软件GeoFrac可对裂缝的平面分布特征进行预测和精细刻画,为寻找裂缝性储集体的井位部署提供技术指导和勘探建议.
Based on the observation of cores, microscopic petrology and structural characteristics of the system, and mercury intrusion analysis, it is found that fractures play an important role in hydrocarbon accumulation in the western and western regions: the fractures are the important reservoir space types in the western and western regions, and the mercury intrusion analysis results It shows that the total volume of fractures accounts for about 1/4 to 1/3 of the total volume of reservoir space. Crude oil can be seen in more fractures in core and rock slices, and fractures are important hydrocarbon migration in the process of hydrocarbon accumulation Channel.The fracture completely filled by salt minerals has a strong capping function and is conducive to the preservation of oil and gas.The fractures in the western and western regions are relatively developed and controlled the enrichment and high yield of oil and gas.Using the GeoFrac software for fracture prediction, Feature prediction and fine characterization, providing technical guidance and exploration suggestions for finding the well location of fractured reservoirs.