潜江凹陷潜江组盐间泥质白云岩岩相特征及意义  

Lithofacies Characteristic and Significance of Inter-salt Argillaceous Dolomite of Qianjiang Formation in Qianjiang Depression

作　　者：漆智先[1] 李应芳[1] 陈素[1] 

机构地区：[1]中国石化江汉油田分公司勘探开发研究院,湖北武汉430223

出　　处：《江汉石油职工大学学报》2014年第3期12-14,共3页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：潜江凹陷是一受北部单向物源控制的断陷盐湖,其北部以砂泥岩地层为主,南部为盐韵律地层;经过近五十年砂岩油藏的勘探开发,在北部以机械沉积作用为主的砂泥岩地层的沉积相划分体系已基本成熟。中南部的盐间地层以机械-化学沉积或化学沉积作用为主,其岩石相随沉积环境不同存在较大的差别,在测井曲线上有明显的响应特征。不同盐间层岩石相类型的测井响应特征,可为寻找盐间泥质白云岩有利区以及指导隐蔽性砂岩油藏勘探提供依据。Qianjiang depression is a rift salt lake which is controlled by one--way provenance and consists mainly of sand--shale formation in the north and of salt rhythm in the south. Thanks to near fifty years of exploratory development of sandstone reservoir, a system of dividing sedimentary facies of sand--shale formation based on mechanical sedimentation in the north is basically in place. The formation between salt layers in the south central is based on mechanical--chemical sedimentation or chemical sedimentation. Its facies are different in different sedimentary environment and display obvious response characteristics on the logging curve. Log response characteristics of different lithofacies between salt layers contribute to searching argillaceous dolomite between salt layers and guiding exploration of elusive sandstone reservoir.

关 键 词：潜江凹陷 盐间泥质白云岩 岩石相 划分意义 

分 类 号：P586[天文地球—岩石学]