西藏岗巴-定日盆地盖层特征与评价  

THE FEATURE AND EVALUATION OF COVER ROCKS IN THE GANGBA-DINGRI BASIN IN SOUTH TIBET

作　　者：王进军[1,2] 马润泽[1] 李亚林[3] 陶晓风[1] 张瑞军 严冰[1] 

机构地区：[1]成都理工大学地科院,四川成都610059 [2]四川省友鑫矿业有限公司,四川成都610017 [3]中国地质大学,北京100083

出　　处：《新疆地质》2010年第2期191-195,共5页Xinjiang Geology

基　　金：<惩香错-吉隆石油地质走廊大剖面综合调查>(科油[2005]012号)项目资助

摘　　要：岗巴-定日盆地发育一定厚度的生储盖层,作为可能盖层其分布较广.通过野外采集盖层样和室内测试样品的孔隙度、渗透率、突破压力等物性参数,结合盖层的横向展布及厚度,综合分析盖层封盖能力,作出正确评价.研究结果表明,盆地内不同地层中均有不同类型盖层分布,且单层厚度大,其封盖性不同,多为有利-较好盖层,为研究西藏油气保存提供了有力的地质依据.There are many probable cover rocks in the Gangba-Dingri basin.It is mainly studied in this paper.By collection and analysis on cover rocks＇ porosity, permeability, breakthrough pressure and consulting experience, extended distributing,thickness, we rightly evaluate feature of cover rocks.Studying result shows probable cover rocks in the different stratum and each is thick.There are different sealing capabilities in them.There are many favorable-common cover rocks and sealing capability.All of these provide strongly geological evidence for oil-gas preservation in Tibet.

关 键 词：可能盖层 物性参数 横向展布 厚度 封盖能力 

分 类 号：P618.130.21[天文地球—矿床学]