A coupling flow model for fractured horizontal well and anisotropic tight gas reservoir

Abstract The development of multistage fracturing technology in horizontal wells is a great impulsion to the successful unconventional resources. hydraulic fractures distribute regularly along wellbore, forming seepage channel for fluids tight gas reservoir and greatly improving productivity wells. Based on Green function Neumann product principle, we establish flow model fractured well coupled with anisotropic under both unsteady state pseudo-steady propose method solve this model. calculation results show that rate early larger than state. There no interference among state, direct proportion fracture numbers. Affected by frictional acceleration pressure drop, end obviously other permeabilities different directions have influence distribution. With increasing K x , between reduced, distribution more balanced. When y becomes larger, are stronger, “U” shape wellbore significant.