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川北大安寨段灰岩非常规储层的形成与多期次深部热水溶蚀作用密切相关。湖滩及湖坡相带是最有利的深部热水溶蚀作用发育部位，半深湖相区泥质油源岩在不同演化阶段排出的流体是溶蚀流体的主要来源，燕山晚期～喜山早期的频繁溶蚀作用则是该储层的主要形成期。深部热水溶蚀作用可划分为成岩期、构造期、构造期后３个溶蚀期次和５个次生矿物充填阶段，各期次溶蚀孔洞缝的产状，充填物的阴极发光、地球化学、包裹体、有机岩石学和流体性质等特征均有明显的差异，综合这些特征，提出了大安寨段非常规储层的深部热水溶蚀成因模式。
The formation of unconventional limestone in Daanzhai Section of North Sichuan Basin is closely related to the multi-stage deep hot-water erosion. Lakes and lacustrine facies are the most favorable sites for the development of deep hot water erosion. Fluids emanating from the muddy source rocks in the semi-deep lacustrine facies at different evolution stages are the main sources of dissolution fluids. Late Yanshan ~ Early Himalayan Frequent erosion is the main formation of the reservoir. Deep hot water erosion can be divided into diagenesis period, tectonic period, three dissolution periods and five secondary mineral filling stages after the tectonic period, the occurrence of dissolved pores, the cathodoluminescence of fillings, geochemistry, The characteristics of fluid inclusions, organic petrology and fluid properties all have obvious differences. Based on these characteristics, the authors put forward the genesis pattern of deep hot water erosion in unconventional reservoirs in Daanzhai section.