Lapidofacies of sandstone reservoir can be divided into calcite cementation, illite filling, quartz overgrowth and dissolution four lapidofacies types, which have different distribution rules.

• 砂岩储层成岩相可划分方解石胶结、伊利石充填、石英次生加大和溶蚀溶解四种成岩相类型。不同成岩相的分布规律有所不同。