The Research about Heterogeneity of Reservoir Rich in Volcanic Material of the First Member of Nantun Formation in Beizhong Area, Hailar Basin
Abstract: According to core observation, thin sections identification and logging data, this paper analyzes the reservoir heterogeneity in the first member of Nantun Formation in Beier Sag. The reservoir heterogeneity has been investigated on the macro and micro, and the results show that the reservoir has strong heterogeneity. In K1n1, the heterogeneity of Ⅳ oil group is the strongest while the other oil groups are medium. Macroscopically, each small layer sand body in plane distribution is extremely uneven. On the one hand, the reservoir parameters showed rhythmic variation in the vertical direction, and the average thickness of sandstone decreases from top to bottom. On the other hand, the interlayer development and distribution of these layers are very different. Furthermore, the thickness of the sand is uneven, and the porosity and permeability change greatly, showing strong plane heterogeneity. Microscopically, the porosity of reservoir is mainly secondary dissolution pore, and the micro pore structure is mainly ultra-low permeability. The reservoir performance of the IV oil group is higher than that of the I to III. Sedimentation and volcanism are the main controlling factors for the formation of heterogeneity.
文章引用: 徐苗苗 , 甘逸 , 王雅宁 , 李甘璐 , 马雨晨 (2017) 海拉尔盆地贝中地区南一段富含火山物质储层非均质性研究。 地球科学前沿， 7， 181-189. doi: 10.12677/AG.2017.72020
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