陕北志丹地区三叠统延长组长6沉积微相研究  

Study on Sediment Microfacies of Chang 6 Member of Triassic Yanchang Formation in Zhidan area,Northern Shaanxi

作　　者：侯长浩[1] 郭向东 刘保平 杨杰 

机构地区：[1]西安石油大学,陕西西安710065 [2]延长油气公司天然气勘探部,陕西延安716000 [3]延长油田公司勘探部,陕西延安716000

出　　处：《辽宁化工》2011年第3期285-287,共3页Liaoning Chemical Industry

摘　　要：以志丹地区三叠系延长组长6为研究对象,针对研究区目的层段的地质特征、沉积条件,以沉积学、现代石油地质学、储层地质学、油层物理学、地球物理测井理论为指导,以地质资料为基础,测井资料精细处理与解释为手段并结合生产测试资料,对该区的沉积微相类型进行了系统的研究,认为该区长6属于三角洲前缘亚相沉积,主要为前缘河口亚相,进一步划分为分流河道、分流间湾、河口坝、远砂坝等微相,其中分流河道及河口坝复合沉积的"坝上河"砂体比较发育。Taking Chang 6 member of triassic Yanchang formation as research object,aiming at geologic feature and sedimentary condition in the area,microfiches types of the area were studied by theory and method of sedimentology,petroleum geology,geophysical well logging and so on.The results show that the area C6 is composed of sub-deltaic front,pre-mouth sub-facies,and it can be further divided into distributary channel,interdistributary estuary in delta front,mouth bar,distal bar.The ＂river over bar＂ composed of distributary channel and mouth bar has founded variety of well developed sand bodies.

关 键 词：志丹地区 延长组长6 沉积微相 

分 类 号：TE122[石油与天然气工程—油气勘探]