摘要
以鄂尔多斯盆地富县矿区煤层顶板延安组砂岩为研究对象,综合铸体薄片、扫描电镜及核磁共振实验结果,探讨了顶板砂岩孔隙结构特征对油气赋存的影响。结果表明,延安组砂岩孔隙-喉道大小分布范围广,普遍为双峰分布,残余粒间孔及溶蚀孔组成大孔喉系统,而晶间孔构成了微小孔喉系统,孔喉体积及连通能力是影响砂岩中油气赋存的关键因素。
The effect of pore structure characteristics on the occurrence of oil and gas in the roof sandstone of Yan’an Formation of coal seam in Fuxian mining area of Ordos Basin is discussed based on the results of cast thin section,SEM and NMR experiments.The results show that the size distribution of pore-throat in Yan’an Formation sandstone is wide and bimodal.Residual intergranular pores and solution pores form a large pore throat system,while intergranular pores form a small pore throat system.Pore throat volume and connectivity are the key factors affecting the occurrence of oil and gas in the sandstone.
作者
王文博
许志龙
宋涛
刘坤
Wang Wenbo;Xu Zhilong;Song Tao;Liu Kun(Yan’an Che village Coal industry(Group)Co.,LTD,Yan’an 710060;Fuxian Mining development Co.,LTD,Yan’an 710060)
出处
《石化技术》
CAS
2024年第9期199-200,共2页
Petrochemical Industry Technology
关键词
煤层顶板
富县矿区
孔隙结构
流体赋存
Coal seam roof
Fuxian mining area
Pore structure
Fluid occurrence
