The Inflow Performance of a Multiple-fractured Horizontal Wells Based on a Discrete-fracture Model

摘要

The mathematical unsteady flow model of a multiple-fractured horizontal well in box-shaped reservoir is developed. The Darcy law is employed to describe the fluid flow in matrix media and fractures, while the Hagen-Poiscuille law is used to describe the flow within horizontal well. Then the idea of discrete-fracture model is adopted to simplify the integral form and improve the computational efficiency, where fracture and horizontal wellhore are assumed as 2D plane and ID line, respectively. Finally, the numerical bottom pressure solution is obtained, and the accuracy of this method is verified by comparing it with a classic analytical method.