these sandstones have experienced mechanical compaction, various cementations, dissolutions and late authigenic kaolinite filling.
巖石主要经历了压实、胶结、溶蚀和晚期自生高岭石充填等成巖作用。
the formation of authigenic kaolinite and secondary pores and charging of natural gas are two associated processes with closely related mechanisms.
自生高岭石与次生孔隙的形成过程与天然气的充注,为两个机理上紧密联系的共生过程。
the cementation of authigenic kaolinite may preserve the tiny intergranular pore-space, and slightly influence the porosity, and even increase the permeability.
自生高岭石胶结可保留粒间微孔隙,对渗透性影响较小,甚至可增强渗透性。
eodiagenesis is characterized by the assemblage of carbonate-analcime-anhydrite, while authigenic kaolinite is found in some strata.
浅埋藏期以碳酸盐~沸石~硬石膏组合为特征。