摘要
通过现场岩心观察,结合岩石薄片、铸体薄片、扫描电镜、阴极发光等微观图像资料,对准噶尔盆地西北缘五八区二叠系上乌尔禾组储层岩石学特征及微观特征进行了系统的研究,深入剖析了区内主要的成岩作用类型、成岩阶段、成岩序列以及成岩作用对储集物性的影响。结果表明,上乌尔禾组储层主要成岩作用类型有压实作用、成岩收缩、胶结作用、交代作用和溶解作用,处于中成岩阶段B期;可划分出4类成岩相,即砾缘缝-浊沸石溶蚀相、伊利石胶结相、方解石胶结相、石膏-高岭石胶结相。
The petrologic and microscopic characteristics of reservoirs in Upper Wu'erhe Formation of Permian of Regions 5 and8 in the northwestern margin of Junggar Basin were systematically studied. The diagenetic types,diagenetic stages,sequence and the effect of diagenesis on reservoir physical property were analyzed deeply. The study result indicates that its genetic types are compaction,genetic shrinkage,gelation,metasomasis and dissolution,it is at Stage B of genesis and 4 diagenetic facies can be divided,such as gravel flange joints-laumonite dissolution facies,illite cemented facies,calcite cemented facies,gypsum-kaolinite cementation facies.
出处
《石油天然气学报》
CAS
CSCD
2014年第5期37-43,4,共7页
Journal of Oil and Gas Technology
关键词
准噶尔盆地
上乌尔禾组
成岩作用
成岩相
Junggar Basin
Upper Wu'erhe Formation
diagenesis
diagenetic facies
