Numerical Simulation Study of Pore-Throat Evolution of Upper Paleozoic in Ordos Basin, China

The parameters of grain size, contents silica, kaolinite, hydromica, calcite, and a geological time tight sandstone reservoirs in Upper Paleozoic Ordos basin were researched thoroughly, the impact diagenetic evolution process different types on porosity throats was analyzed, based quantitative statistics from thin sections, measurements permeability, conventional constant-rate mercury injection tests. We not only build through process-oriented numerical simulations during but also establish effect-oriented between diagenesis parameters. Furthermore, we set up fitting relationship factors pore gas-bearing reservoirs. Differentiation results pore-throat system have clear characteristics, such as lithic quartz sandstones He 8 Member Sulige area Shan 2 Yulin area. show that main influencing are size siliceous cement, which can be validated by measured data two intervals. important to deep understanding reservoir continuing experience permeability timing petroleum charging into applied elsewhere quick means high grading areas risks field development.