Early shallow buried for a long time, the late quickly buried deep and late tectonic uplift in western foreland basin are common geological evolution process. Affected by such geological evolution process, especially in the late tectonic uplift and sandstone rebounding, a high-quality reservoir can be formed. Clearing this kind of reservoir parameters such as porosity, pore diameter and throat diameter of evolution characteristics and quantitative evaluation, has great significance for oil and gas exploration. Based on analysis of physical simulation of diagenesis experiment, combined with the actual geological research, the reservoir pore types and evolution can be divided into five stages. The first to the three evolution stages is consistent with the deep crassus. Since Pliocene, beginning around 6 000 m depth, the burial evolution that Well Kela 2 and Keshen 2 area began to differentiation. The tectonic uplift effection can be divided into early and late two stages. The sandstone rebounding occurred after tectonic uplift. The sandstone rebounding effect can make the remaining native hole increases by about 1.0%. The sandstone rebounding and secondary dissolution pore can increase the porosity of reservoir. The diagenetic fissure and uniform reservoir pore can improve the reservoir permeability.
Gao Zhiyong Cui Jinggang Feng Jiarui Zhou Chuanmin Shi Yuxin. Sandstone pore rebounding evolution model of a geological process from burial compaction to tectonic uplift[J]. Chinese Journal of Geology, 2018, 53(2): 531-546.