A New Model of Fractured Horizontal Well Coupling With the Tight Gas Reservoir at Unsteady State

Abstract

Based on the geologic characteristics of tight gas reservoir, an anisotropic gas reservoir/fractured horizontal wellbore coupling model is derived by the Green functions and Newman product principle at unsteady state. The model considers the gas pseudopressure drop and the simultaneous production of the fractures and horizontal wellbore. It can be used in both unsteady state and quasisteady state. The factors that influence the productivity and the comparison between different producing modes are presented as well.

Keywords:

• fractured horizontal well
• Newman product principle
• pseudopressure drop
• quasi-steady state
• tight gas reservoir