松辽盆地北部青一段含油泥页岩储集特征浅析  

Characteristics of shale reservoir of the first member of Qingshankou Formation in northern Songliao Basin

作　　者：柳波[1] 王蕃[2] 冉清昌[1,3] 李梅[1] 戴春雷[1] 王猛[1] 

机构地区：[1]东北石油大学非常规油气成藏与开发省部共建国家重点实验室培育基地,黑龙江大庆163318 [2]大庆钻探工程公司测井公司,黑龙江大庆163412 [3]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163318

出　　处：《岩性油气藏》2014年第5期64-68,共5页Lithologic Reservoirs

基　　金：国土资源部全国油气资源战略选区调查与评价专项"华北及东北地区页岩气资源调查评价与选区"(编号:2009GYXQ15);国家青年自然科学基金项目"湖相纹层泥页岩有机质富集机理及其与页岩油关系"(编号:41202101)联合资助

摘　　要：储集性能的好坏是影响泥页岩含油气性的关键因素。利用岩心观察、薄片鉴定、扫描电镜及等温吸附等手段,对松辽盆地北部青一段含油泥页岩进行了岩石学特征和储集特征研究,对其储集物性进行了初步评价。结果表明,青一段泥页岩储层的岩石类型主要包括含粉砂泥岩、粉砂质泥岩、含灰质泥岩及粉砂岩等,其中粉砂质泥岩、含灰质泥岩及粉砂岩脆性矿物含量相对较高,且储集空间类型多样,与微裂缝构成了"水平+垂直的裂缝网络系统"。薄层粉砂岩夹层或纹层的粒间溶蚀微孔较为发育,溶蚀微孔可达微米级。青一段泥页岩综合评价为特低孔、特低渗储层,其中又以粉砂质泥岩、含灰质泥岩及炭质粉砂岩储集物性较好,可望在页岩油气勘探中获得突破。The reservoir quality is the key factor for influencing the enrichment of shale oil and gas. Through core observation, thin section identification, scanning electronic microscope, isothermal adsorption and other means, this paper studied the petrology and reservoir characteristics of oil shale of the first member of Qingshankou Formation in northern Songliao Basin. The result shows that the rock types of reservoir include with-silt mudstone, silty mudstone, lime mudstone and sittstone. The silty mudstone, lime mudstone and sihstone are with higher contents of fragile mineral, and developed various types of reservoir space which constitutes a complexes level and vertical fracture net-system. Intergranular dissolved pores are more developed in thin siltstone layers or laminate, and their porosity can reach micron level. The reservoir of the first member of Qingshankou Formation belongs to ultra-low porosity and ultra-low permeability reservoir. The silty mudstone, lime mudstone and carbonaceous siltstone have best reservoir properties.

关 键 词：页岩油气 储集特征 致密储层 纳米孔隙 松辽盆地北部 

分 类 号：TE122.1[石油与天然气工程—油气勘探]