塔里木盆地克深区巴什基奇克组砂岩成岩演化及主控因素

发布时间：2018-03-24 00:09

本文选题：致密砂岩储层　切入点：成岩作用　出处：《特种油气藏》2017年01期

【摘要】：塔里木盆地克深地区下白垩统巴什基奇克组致密砂岩储层的成岩作用直接控制着储层致密化程度,进而制约着库车气藏的形成。针对研究区成岩作用影响因素不清的问题,基于储层物性、录井等资料,结合区域地质背景、构造演化史研究,运用铸体薄片、阴极发光、扫描电镜、流体包裹体等实验观察方法,对该区储层成岩作用类型及影响因素进行了研究。结果表明:克深地区巴什基奇克组致密砂岩储层主要经历了压实、压溶、胶结、交代、溶蚀以及破裂作用,现处于中成岩B期;成岩作用主要受构造、沉积以及流体充注等因素共同控制,构造作用为主控因素,沉积环境有补充作用,流体充注影响较小;构造运动宏观上控制着储层物性、沉积成藏环境、埋藏演化以及流体充注等多个过程。该研究对克深地区气藏的有效储层物性下限计算、储层致密史恢复等均具有一定的指导意义。
[Abstract]:The diagenesis of tight sandstone reservoir in Bashiqike formation of Lower Cretaceous in Keshan area of Tarim Basin directly controls the degree of reservoir densification and then restricts the formation of Kuqa gas reservoir. Based on reservoir physical properties, mud logging and other data, combined with regional geological background, structural evolution history research, using casting thin sheet, cathodic luminescence, scanning electron microscope, fluid inclusion and other experimental observation methods, The diagenesis types and influencing factors of the reservoirs in this area are studied. The results show that the tight sandstone reservoirs of the Bashiqike formation in Keshan area mainly undergo compaction, pressure solution, cementation, metasomatism, dissolution and fracture. The diagenesis is mainly controlled by tectonic, sedimentary and fluid filling factors, the tectonic process is the main controlling factor, and the sedimentary environment is supplementary, and the fluid filling has little effect on the diagenesis, the diagenesis is in the middle diagenesis stage B, and the diagenesis is mainly controlled by structure, sedimentation and fluid filling. The tectonic movement macroscopically controls many processes, such as reservoir physical properties, sedimentary reservoir forming environment, burial evolution and fluid filling, etc. This study calculates the lower limit of effective reservoir physical properties of gas reservoirs in Kesheng area. The recovery of reservoir density history has certain guiding significance.
【作者单位】：油气资源与探测国家重点实验室;中国石油大学(北京);中海油研究总院;
【基金】：国家重点基础发展规划“973”项目“中国西部叠合盆地深部油气复合成藏机制”(2011CB201105) 国家科技重大专项“深层油气、非常规天然气成藏机理与有利勘探区评价技术”(2011ZX05008-004)
【分类号】：P618.13

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