新疆柯坪地区上二叠统沙井子组储层特征

Reservoir characteristics of Shajingzi formation in Kapin region of Xinjiang area

新疆柯坪地区沙井子四石厂剖面上二叠统沙井子组中发现油砂,经室内分析测试,确定有油气显示.讨论了油砂层的岩石学特征、砂体类型、微观孔隙结构、储油物性及有机地球化学特征.沙井子组含油层位属河道砂体,裂缝对渗透性有很大贡献,属好的储集层段,应做为石油勘探的重点层位.

Bituminous sandstone bed is discovered in Shajingzi Sishichang section of the Shajingzi formation in upper Permian in Kapin region of Xinjiang area. Laboratory test and analysis on the bituminous sandstone samples proved that sandstone has oil and gas. The lithostratigraphic characteristics, sandstone type, micropore structure, organic geochemical characteristics of bituminous sandstone bed are described. The conclusion is that the oil\|bearing sandstone bed belongs to river channel sand and is a good reservoir. It can be taken as the key bed in petroleum exploration.