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西昌盆地上三叠统白果湾组砂岩储层研究结果表明,区内次生孔隙可分为3种成因体系:与地下同源流体溶解作用有关的孔隙体系;与有机质成岩过程中产生的酸性流体溶解作用有关的孔隙体系和与烃类一矿物氧化剂间氧化还原反应生成的化学侵蚀性流体溶解作用有关的孔隙体系.它们构成区内储层的主要储集空间.各孔隙体系的孔隙结构、沉积地球化学特征及共生组合关系各异.它们是多源溶解营力以多种溶解机制对储层多期溶解叠加改造的综合产物.
The results of the sandstone reservoirs of the Upper Triassic Baigewan Formation in the Xichang Basin show that the secondary pores in the area can be divided into three types of genetic systems: the pore system related to the dissolution of the subsurface fluid and the acidic fluid produced during diagenesis of the organic matter Dissolution-related pore systems and pore systems associated with the dissolution of chemically aggressive fluids produced by the oxidation-reduction reaction between hydrocarbon-based mineral oxidants, which form the main reservoir space for the reservoirs in the area.The pore structure of each pore system, deposition Geochemical characteristics and symbiotic combination of different relations.They are multi-source dissolved force to dissolve the mechanism of multi-stage dissolution of the reservoir superposition and transformation of the integrated product.