川东北达县—宣汉地区双庙场构造嘉二段储层特征
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摘要
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。
The characteristics of rock association,reservoir properties,pore structure,diagenesis,seismic response and thickness distribution of Jia 2 reservoir in Shuangmiaochang structure are expounded.It is concluded that Jia 2 reservoir is mainly composed of dolomite,and the reservoir is mainly fracture-pore type with good reservoir properties. The reservoir space is mainly intercrystalline solution pore and fracture.The seismic response characteristic is continuous and parallel medium frequency and middle-high amplitude with 2 or 3 phases.The reservoir thickness is thinner,general of 25 to 40 m.
引文
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