The Reservoir Characteristics Analysis of the G162 Area in the Jiyuan Oilfield, Yan 9 Segment.

The G162 block of Jiyuan Oilfield in the Yan 9 segment has good exploration prospects, with multiple drilling wells yielding high industrial oil flow. However, current research on the reservoir characteristics of the Yan 9 segment in the G162 block is relatively weak, which has hindered the progress of exploration and development. To clarify the reservoir development characteristics of the Yan 9 segment in the G162 block of Jiyuan Oilfield, this study takes the reservoir of the Yan 9 segment in the G162 block of Jiyuan Oilfield as the research object, and conducts a study on the petrological characteristics, physical properties, and pore structure of the reservoir rocks by combining core samples, thin sections, physical properties, and high-pressure mercury injection data. The results show that the permeability and porosity of the Yan 9 segment reservoir vary greatly, with medium-sized pores and moderate permeability predominating, and the overall pore structure is relatively good. Based on the physical property data, types of pores, the curve shapes of high-pressure mercury injection, and various parameters, the pore structure of the Yan 9 segment reservoir is classified from good to poor into three types: Ⅰ, Ⅱ, and Ⅲ. The study area is mainly dominated by Type Ⅱ, followed by Type Ⅰ.