古地理学报2012，Vol.14Issue(4)：522-532,11.
应用多尺度资料研究川西大邑构造上三叠统须家河组成岩储集相
Applying multi-scale data to study diagenetic reservoir facies of the Upper Triassic Xujiahe Formation in Dayi Structure, western Sichuan Province
摘要
Abstract
By the full use of cores , well log and seismic data, the types of diagenetic reservoir faci-es, geological and logging response characteristics of diagenetic reservoir facies, and the diagenetic sequence and horizontal distribution of high-quality diagenetic reservoir facies of the Upper Triassic Xujiahe Formation in Dayi Structure are semiquantitatively-quantitatively researched through several methods, such as slice observation under microscope, core physical analysis, well curve intersection, seismic velocity inversion and so on. The aims of research are to deepen geological theories of low permeability sandstone reservoir and indicate effective development of gas field in this area. The results show that diagenetic reservoir facies of sandstone in the research area can be divided into 4 types, namely, the dissolution pore-micropore-fracture diagenetic reservoir facies with strong fracture, the micropore diagenetic reservoir facies with strong compaction, the tight diagenetic reservoir facies with strong compaction and the tight diagenetic reservoir facies with strong cementation. The curve cross plots of acoustic, density, resistivity and gamma are used to effectively identify different diagenetic reservoir facies. Among 4 types of diagenetic reservoir facies, the dissolution pore-micropore-fracture diagenetic reservoir facies are the high-quality diagenetic reservoir facies, whose porosity is between 3% and 8%, permeability larger than 0.5×10 μm2 . The high-quality diagenetic reservoir facies mainly develops on distributary channels and subaqueous distributary channels of the high position of structure belt and belongs to quartz sandstone sufferring strong compaction and fracture. The distribution of them are controlled by sedimentary factors and structure factors.关键词
大邑构造/须家河组/成岩储集相/多尺度资料/半定量—定量研究Key words
Dayi Structure, Xujiahe Formation, diagenetic reservoir facies, multi-scale data, semiquantitative-quantitative study分类
能源科技引用本文复制引用
林煜,吴胜和,徐樟有,陈策..应用多尺度资料研究川西大邑构造上三叠统须家河组成岩储集相[J].古地理学报,2012,14(4):522-532,11.基金项目
国家科技重大专项(编号:2011ZX05009-003)和国家油气重大专项(编号:2011ZX05031-003)联合资助 （编号:2011ZX05009-003）
