歧口凹陷南部斜坡区古近系沉积相类型及其特征  

Sedimentary Facies Types and Characteristics of Paleogene in the Southern Slope of Qikou Sag

作　　者：袁淑琴[1] 王书香[1] 郭芳[1] 刘玉梅[1] 张洪娟 王洪彪[3] 赵宇超[1] 纪建峥[1] 陈璞[1] 赵林丰[1] 

机构地区：[1]中石油大港油田分公司勘探开发研究院,天津300280 [2]中石油渤海钻探工程有限公司油气合作开发分公司,天津300280 [3]中石油大港油田分公司滩海开发公司,天津300280

出　　处：《石油天然气学报》2014年第4期44-50,5,共7页Journal of Oil and Gas Technology

摘　　要：综合利用岩心、测井、地震等资料,对歧口凹陷南部斜坡区古近系沙河街组一段(Es1)沉积相类型及其特征进行了全面系统的研究。结果表明:研究区Es1主要发育辫状河三角洲和重力流水道;其中辫状河三角洲沉积分布在zhu68井-zhu38井一带以南,主要发育辫状河三角洲前缘亚相和辫状河三角洲平原亚相;重力流水道分布在坡折带以下的zhu65井-qn8井-qn6井-qn2井一带,发育有水道主体、水道侧翼、水道末梢等3种沉积微相。该研究成果为歧口凹陷南部斜坡区的勘探方向选择及井位优选提供了依据。Based on core,logging and seismic data,the sedimentary facies types and characteristics in the first member of the Shahejie Formation(Es1)of Paleogene in the southern slope of Qikou Sag were studied integrally and systematically.The results show that braided river delta and gravity-flow channel are mainly developed in Es1,where braided river delta is mainly distributed in the south of Well zhu 68and Well zhu 38,braided river delta front subfacies and braided river delta plain subfacies are mainly developed.Gravity-flow channel is distributed in wellblock of zhu65-qn8-qn6-qn2,three kinds of microfacies,such as waterway,channel flank and waterway terminal flank are devevloped.The research results provide a basis for selection of the exploration direction and well locations in the southern slope of Qinan Sag.

关 键 词：古近系 沉积相类型 辫状河三角洲 重力流水道 歧口凹陷 

分 类 号：P618.13[天文地球—矿床学]