A Practical Model for Gas–Water Two-Phase Flow and Fracture Parameter Estimation in Shale

The gas flow in shale reservoirs is controlled by desorption diffusion and multiple mechanisms the matrix. treatment of hydraulic fracturing injects a large amount fluids into reservoirs, can only be recovered 30~70%. remaining fluid invades reservoir form water invasion layer. In this paper, introducing concept layer, fracture network di-vided three zones: major fracture, layer stimulated volume (SRV). mathematical model considering desorption, gas–water two-phase established Laplace domain, semi-analytical solution method developed. new validated commercial simulator. A field case from WY southwestern China used to verify utility model. Several key parameters SRV are interpreted. paper provides theoretical guidance for effectiveness evaluation an efficient development strategy reservoirs.