芽坪区延长组长_6油层沉积相特征研究  

Research on Sedimentary Facies of Chang6 Reservoir in Yaping Block

作　　者：温莉[1] 

机构地区：[1]陕西延长石油(集团)有限责任公司油气勘探公司,陕西延安716000

出　　处：《辽宁化工》2016年第3期345-348,共4页Liaoning Chemical Industry

摘　　要：通过对芽坪区内岩相、沉积构造、录井测井资料及电测曲线的综合认识,结合地层划分,对该区长6油层的沉积相类型以及砂体展布特征进行了研究。认为研究区三叠系延长组长6时期处于安塞三角洲上游地带,主要为三角洲发育区,将长6油层组划分为三角洲平原和三角洲前缘亚相,其中在长64、长63、长62时期研究区属于三角洲前缘亚相,长61时期属于三角洲平原亚相。确定了长6油层小层沉积微相展布特征,为预测有利区奠定基础。Through comprehensive understanding of facies, sedimentary structures, log data and logging trace in Yaping block, combined with stratigraphic division, the sedimentary facies and sand body distribution characteristics of Chang 6 reservoir were studied. The results show that, Triassic Chang6 in the study area is in Ansai delta upstream area, and is mainly delta development zone. Chang6 reservoir is divided into the delta plain and delta front, and Chang6^4, Chang6^3, Chang6^2 reservoirs in the study area belong to the delta front, Chang6^1 period belongs the delta plain. The microfacies distribution characteristics of Chang6 oil layer were determined, which could provide the foundation for predicting favorable areas.

关 键 词：长6油层组 沉积相 微相 展布特征 芽坪区 

分 类 号：TE122.2[石油与天然气工程—油气勘探]