不同动力学机制共同制约下的储层压实效应特征——以塔里木盆地库车坳陷白垩系储层研究为例  

The characteristic of diagenetic compaction induced by multiform geodynamic mechanisms in reservoir:An example from Cretaceous sandstone reservoir in Kuqa depression,Tarim Basin

作　　者：韩登林[1,2] 赵睿哲[2] 李忠[3] 李维锋[1,2] 

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,武汉430100 [2]长江大学地球科学学院,武汉430100 [3]中国科学院地质与地球物理研究所,北京100029

出　　处：《地质科学》2015年第1期241-248,共8页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：中国石油科技创新基金项目(编号:2012D-5006-0109);湖北省教育厅科学研究计划项目(编号:B2013285)资助

摘　　要：在垂向压实和侧向压实的双重动力学机制叠加下,库车坳陷白垩系碎屑岩储层展现出的压实效应,无法用传统单一的垂向压实理论来解释。通过详实的成岩特征显微统计分析,梳理出了垂向(埋深)压实和侧向(构造)压实分别对于研究层段的压实效应。研究层段的压实效应主要由垂向压实造成,侧向压实造成的压实效应相对较弱;侧向压实减孔量占总压实减孔量的比例并不与构造应力本身的大小呈明显的正比关系,侧向构造应力施压的时间与储层垂向埋藏压实程度之间的时间配置关系、构造挤压应力的大小等因素严重制约着构造应力对于储层的侧向压实效应。Under superposition of vertical burial compaction and lateral compression compaction in Cretaceous sandstone reservoirs in Kuqa depression,Tarim Basin,the overall compaction effect in the reservoirs cannot be explained by classical vertical compaction theory.Through microscopically analysis of rock constituents and diagenetic characteristics in the reservoirs,the compaction effects controlled by vertical compaction and lateral compaction are analyzed and contrasted.The result shows that the overall compaction effect in the reservoirs is caused by vertical compaction mostly,and that caused by lateral compaction is less correspondingly.The proportion for pore loss caused by lateral compaction to pore loss made by total compaction is not positively correlated to intensity of compression stress.There are several important factors controlling the effect of lateral compaction in the reservoir.In addition to the intensity of compression stress,the relationship between time of lateral compression occurrence and vertical bury depth of the reservoir is a maior concern as well.

关 键 词：库车坳陷 成岩作用 压实作用 构造应力 埋藏深度 

分 类 号：P618.13[天文地球—矿床学] TE121.1[天文地球—地质学]