Numerical simulation on the effect of fractures geometries for shale gas development with discrete fracture network model

Abstract The shale gas reservoir is regarded as a dual medium consisting of fracture (hydraulic and discrete natural network) rock matrix, the seepage process in matrix fully considered mathematical model flow accordance with Darcy's law was established. results show influence order hydraulic geometry on cumulative production. Compared aperture 10 –4 m, when –5 m –6 production reduced by 88.0% 99.7%, respectively. length 100 200 300 increased 38.2% 62.4%, increase increases permeability, which make it more conducive to into fracture, thereby increasing number fractures makes connectivity becomes better more.