砂质辫状河储层构型及天然气分布规律研究  

Reservoir Architecture and Gas Distribution in Sandy Braided Sedimentation

作　　者：单敬福[1,2] 陈欣欣[1,2] 汤军[1,2] Shan Jingfu;Chen Xinxin;Tang Jun(Key Laboratory of Exploration Technologies for Oil and Gas Resources,MOE,Yangtze University,Wuhan 430100,China;School of Geoscience,Yangtze University,Wuhan 430100,China)

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,武汉430100 [2]长江大学地球科学学院,武汉430100

出　　处：《科技通报》2017年第10期29-33,共5页Bulletin of Science and Technology

基　　金：国家自然基金(41372125);湖北省教育厅基金(Q20121210);中国地质大学(武汉)构造与油气资源教育部重点实验室开放基金(TPR-2012-23)联合资助

摘　　要：储层内部构型是控制油气分布的关键地质因素。以鄂尔多斯盆地苏里格气田西部密井网区二叠系地层为例,充分利用测井、岩心、露头等资料,识别出砂质辫状河不同层次的构型界面,根据Miall对构型界面级次的划分,刻画了单一辫流河道,心滩以及心滩内部夹层这3~5级构型界面所限定的构型单元;并将不同级次的构型单元进行了定量的表征,总结了辫状河储层构型对天然气分布的控制规律。心滩是良好的储集层,天然气受心滩内部夹层控制作用明显,且差气层主要分布于心滩上部,心滩内部夹层呈基本平行状,其间圈定的气体在水平方向运移,延伸较远。这对于辫状河储层地质研究和提高气田开发效益具有重要实用价值。Reservoir architecture controls the distribution of remaining oil.Taking the example of the Permian dense well in Ordos basin,architecture surfaces of the braided-stream deposits are recognized with materials of cores,well logging and outcrops.Based on the different order of surfaces classified by Miall,Architecture elements including single braided channels,braided bars and the interbeds inside are quantitatively characterized.The distribution regular that gas migrates mainly horizontally and thin gas distributes upper side of the braided bars controlled by interbeds is concluded which is of great importance for reservoir research and gas development.

关 键 词：辫状河 储层构型 心滩 天然气 分布规律 

分 类 号：P618.3[天文地球—矿床学] TE122.221[天文地球—地质学]