川西须二段储层地质主控因素的探讨  

Discussion about main controlling factors of reservoirs of the second member of Xujiahe formation in western Sichuan

作　　者：谢丹[1] 李瑞[1] 王俊[2] 

机构地区：[1]成都理工大学"地球探测与信息技术"教育部重点实验室,四川成都610059 [2]成都理工大学工程与环境物探实验室

出　　处：《石油地质与工程》2013年第2期12-14,137,共3页Petroleum Geology and Engineering

摘　　要：须二段储层是川西地区天然气的主要产层,从沉积作用、成岩作用和构造作用三大地质作用出发,分别从岩石类型、岩石孔隙、沉积微相、建设性成岩作用和破坏性成岩作用、构造形态和构造作用等方面对影响储层的地质因素进行探讨,认为粒度、石英矿物为储层储集空间提供了较好的储层条件,天然气聚集前的建设性成岩作用进一步提高了储层物性,构造作用后期形成的高角度裂缝是该区须二段储层获得工业性气藏的保证。The second member of Xujiahe formation is the main gas reservoir in western Sichuan. Based on diagenesis, sedimentation and tectonism, the main controlling factors which can affect reservoirs from the aspects of rock type, rock pore, sedimentary microfacies, constructive diagenesis, destructive diagenesis, structural form and tectonism have been discussed in this paper. The conclusion believes that grain grade and quartz can provide a better condition for the reservoirs, the constructive diagenesis before gas accumulation can improve the reservoir property, and high angle fracture formed in late-stage tectonism is the guarantee of getting industrial gas reservoir in this area.

关 键 词：沉积作用 成岩作用 构造作用 主控因素 

分 类 号：TE112.21[石油与天然气工程—油气勘探]