中文摘要：

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.

英文摘要：

Based on core observations, petrographic and structural microscopic characteristics and mercury injection experiment analysis, it was found that fractures played an important role in the process of oil and gas accumulation. The fractures are an important reservoir space type of the Yingxi Area. The results of mercury injection experiment analysis showed that the total volume of fractures accounted for about 1/4~1/3 of the total volume of all the reservoir space. Many of the oil remains in the fractures could be found through core and thin section observations. Fractures also play an important role of oil and gas migration channel in the process of the oil and gas accumulation and the fractures completely filled by salt minerals have the strong ability of sealing and capping, conducive to the preservation of oil and gas.The fractures in the Yingxi area are very well developed and controll the enrichment and high yield of oil and gas. The plane distribution characteristics of fractures can be predicted and described by a fine description using the seismic fracture prediction software called ＂GeoFrac＂. This can provide technical guidance and exploration recommendations for well deployment in searching for fractured reservoirs.