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本文从储层成岩特征出发,对松辽南部孤家子-八屋气田进行了成岩特征分析,揭示出该气田纵向上存在两个次生孔隙发育带;下部次生带位于登娄库组顶部登三段,地层深埋后受构造运动的影响重新抬升到地表遭受剥蚀,由地表淡水淋滤和后期不整合开启性水循环综合作用的结果;而上部次生带位于泉一段底部,为封闭性水循环在酸性条件下,孔隙水溶液对硅酸盐溶解所致。
Based on the diagenesis of reservoirs, the diagenetic characteristics of the Guoguzi-Badya gas field in southern Songliao are analyzed, revealing that there are two secondary pore-development zones in the longitudinal direction of the gas field, and the lower secondary zone is located at the top of Dengloukou Formation After the deep buried strata, the tectonic movement re-uplift to the surface erosion, by surface freshwater leaching and the result of the unconformity of open water cycle; the upper secondary zone is located at the bottom of the first section of the spring, Water cycle Under acidic conditions, pore water solution caused by the dissolution of silicate.