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通过对川东北达县—宣汉区块南部双庙场构造三叠系嘉陵江组嘉二2亚段储层的岩石组合、物性、孔隙结构、成岩作用、地震响应及厚度分布预测等特征的研究,认为双庙场构造嘉二段储层以白云岩储层为主;白云岩储层物性较好,主要为裂缝—孔隙型储层,储集空间主要为晶间溶孔、裂缝;地震响应特征为平行的、连续性较好的2～3个相位中频及中—强振幅,储层厚度较薄,一般为25～40m。
Through the study on the characteristics of rock assemblage, physical properties, pore structure, diagenesis, seismic response and thickness distribution prediction in the Jialing 2 Formation of the Triassic Jialingjiang Formation in Shuangmiaomiao, Daxian-Xuanhan block, eastern Sichuan . The dolomite reservoirs are mainly composed of dolomite reservoirs in the Shuangmiao Masonry. The dolomite reservoirs are mainly characterized by fracture-pore type reservoirs. The reservoir space is mainly intergranular dissolved pores and fractures. The seismic response It is characterized by 2 to 3 phase intermediate and moderate-to-strong amplitudes with good parallelism and good continuity. The thickness of the reservoir is relatively thin, generally 25-40 m.