The simulation results of relationship between cementation exponent m and total porosity of different diagenetic facies with different content of parameters

The study of conduction mechanism is the key to establishing the subsequent physical derivations, resistivity simulation and saturation models. The purpose of this research is to clarify the conduction mechanisms under different diagenetic facies and build suitable saturation evaluation models. Experimental data of tight gas sandstone from the Ordos Basin were analysed, including data from scanning electron microscopy, conventional core physical property analysis, core casting thin section analysis, core mercury intrusion experiments, and rock electrical conductivity experiments. Accordingly, the diagenetic minerals of the study block were examined, the diagenetic facies were classified by differences in diagenetic properties across the study area. The reservoir was divided into 3 types of diagenetic facies: construction facies, cementation facies, and destruction facies. On this basis, the conductivity characteristics and saturation models of different diagenetic facies within the stud...