辽河东部凹陷古近系页岩气聚集条件分析  

Accumulation conditions of the paleogene shale gas in the eastern sag of Liaohe Depression

作　　者：王广源[1] 张金川[1] 李晓光[2] 边瑞康[1] 朱华[1] 邓飞涌[3] 唐颖[1] 

机构地区：[1]中国地质大学(北京)能源学院海相储层演化与油气富集机理教育部重点实验室,北京100083 [2]中国石油辽河油田公司,辽宁盘锦124010 [3]西南油气田分公司蜀南气矿,四川泸州646001

出　　处：《西安石油大学学报（自然科学版）》2010年第2期1-5,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金项目(编号:40672087;40472073)资助

摘　　要：页岩气是一种现实的非常规天然气资源.通过对大量录井、钻井、地球化学、实验测试及生产测试结果等资料的分析,认为辽河东部凹陷古近系3套泥页岩分布面积广,厚度大,有机碳含量高,有机质类型以腐泥腐殖型和腐殖型为主,有机质成熟度变化范围宽等特点,具备形成页岩气的物质基础.泥页岩中微裂缝和裂缝发育,为游离态气体的赋存提供了有利的储集空间,且泥页岩吸附甲烷能力强,吸附量大,泥页岩段普遍存在气测全烃异常,蕴藏着巨大的页岩气资源.在新开油田、黄金带油田以及桃园气田附近气测全烃异常明显,是页岩气成藏的有利地区.Shale gas is a kind of realistic unconventional natural gas resources.According to the analyses of a great deal of logging,drilling,geochemical data and production testing results,it is held that there are three sets of paleogene shale gas in the eastern sag of Liaohe Depression.Shale widely distributes,and its thickness is great.Its organic carbon content is high;its organic matter is mainly the sapropel-humus type and the humus type,and it is of wide maturity range.So there is the material basis of generating shale gas in the studied area.In addition,a lot of micro-fractures and low-angle fractures is well developed in the shale,which provide the favorable reservoir space for the accumulation of free-state gas.There is gas logging abnormality in the shale layers,which shows that there is a lot of shale gas resources.Exploration activities show that gas logging abnormality is very obvious in Xinkai oilfield,Huangjingdai oilfield and Taoyuan gasfield,where may be the most favorable areas for the accumulation of shale gas.

关 键 词：辽河东部凹陷 古近系 页岩气 有机碳含量 气测显示 

分 类 号：TE122.9[石油与天然气工程—油气勘探]