石油实验地质2017，Vol.39Issue(2)：180-185,194,7.DOI:10.11781/sysydz201702180
渤海湾盆地沾化凹陷沙河街组页岩油微观储集特征
Microscopic characteristics of shale oil reservoirs in Shahejie Formation in Zhanhua Sag, Bohai Bay Basin
摘要
Abstract
The microscopic pore characteristics of shale oil reservoirs are important basic data for exploration and development. Eighteen core samples were collected from the third member of Shahejie Formation (Es3) in well Luo 69 in the Zhanhua Sag, Bohai Bay Basin, and were analyzed using argon-ion polishing Scanning Electron Microscopy (SEM) to discuss the pore development characteristics of shale oil reservoirs. The shale oil layer in Es3 showed a tran-sitional lithology of mudstone and limestone, dominated by limy mudstone, argillaceous limestone and mud bearing limestone, with minor thin layers of limestone. Argillaceous inter-particle pores, carbonate dissolved pores, inter-crystal pores and intra-crystal pores are the main pore types of the shale oil layer. Argillaceous pores provided most of reservoir pores of the shale oil layer. Most of the plane porosity was argillaceous inter-particle pores, while calcite dis-solved pores made a smaller contribution and inter-crystal pores and intra-crystal pores were less important. The pore diameters of shale oil reservoirs were classed as nano scale and micron scale, and the nano scale pores have an abso-lute dominance quantitatively. The reservoir pore area was mainly provided by non-dominant micro-scale pores, which should be focused on in shale oil exploration.关键词
孔径/孔隙贡献/页岩油/沙河街组/沾化凹陷/渤海湾盆地Key words
pore size/porosity contribution/shale oil/Shahejie Formation/Zhanhua Sag/Bohai Bay Basin分类
能源科技引用本文复制引用
刘毅,陆正元,戚明辉,田同辉,冯明石..渤海湾盆地沾化凹陷沙河街组页岩油微观储集特征[J].石油实验地质,2017,39(2):180-185,194,7.基金项目
国家重点基础研究发展计划(973 计划)项目"陆相页岩油储集性能与流动机理"(2014CB239103) （973 计划）
中国石化重点科技攻关课题"页岩油开发基础研究"( P13059)联合资助. （ P13059）
