Study on seepage laws of shale stone by numerical simulation

摘要

Gas seepage law of traditional gas reservoir ignores the flow characteristics in shale stone's nano pore. In this paper, the mathematical model about one dimensional nonlinear seepage laws is built and the model is based on Knudsen diffusion and slippage effect of gas which are major seepage characteristics in shale reservoir. And the results of traditional method and ours are compared. We also offer proper suggestion to the production of shale gas based on sensitivity analysis of inlet pressure of shale stone based on the numerical results of the mathematical model in this paper.