Based on carbon isotope analysis of the calcium carbonate cements in Jurassic sandstone, it is believed that gas dissipation was related with 20% of the calcium carbonate cements and the formation of tight sand seal, and the preferential dissipation and consumption of methane resulted in the wet-prone gas.

Enrichment pattern of carbonate cements in reservoirs of the Hetaoyuan Formation in Nanyang sag,Nanxiang basin;

Distribution characteristics and origin of carbonate cements in the middle and deep clastic reservoirs of the Paleogene in the Bozhong Depression

Study of the relationship between carbonate cement and porosity of the sandstone in Western Sag of Liaohe Basin indicates that carbonate cement and porosity have five correlations,including positive correlation,negative correlation,quadratic function correlation,non-correlation and disordered correlation.