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环江地区横跨鄂尔多斯盆地中西部天环凹陷和西缘逆冲带,该区侏罗系延安组具有工业石油开采的巨大潜在价值。本文通过对该区的岩心、测井等资料的分析,研究砂体特征以及储层物性后,认为该区的砂体在平面上呈条带状分布,东西方向连通性较差,主要为孤立式和多边式;南北方向的砂体连通性较好,主要为多边式和多层式。储层孔隙度主要集中在10%~20%之间,渗透率主要集中在1~20×10-3μm2之间,储集物性相对较好。
The Huanjiang area traverses the Tianhuan depression and the western margin of the Ordos Basin in the western and central regions. The Jurassic Yan’an Formation has great potential for industrial oil exploration. Based on the analysis of core and well logging data in this area and the study of sand body characteristics and reservoir physical properties, the authors think that the sand bodies in this area are distributed in the form of stripes in the plane and have poor connectivity in the east and the west, mainly isolated Type and multi-lateral type. Sand body connectivity in the north and south direction is better, mainly in multi-layer and multi-layer. The reservoir porosity is mainly concentrated in the range of 10% -20%. The permeability is mainly concentrated in the range of 1 ~ 20 × 10-3μm2, and the reservoir properties are relatively good.