Numerical simulation of fluid flow in fractured poroelastic medium integrating dual porosity - Dual permeability and discrete fractures models

摘要

The reservoir systems often contain fractures of different lengths and conductivity. The dual porosity - dual per-meability (DPDP) model and the discrete crack model (DFM) are integrated to achieve computational efficiency and accuracy of numerical simulation of fractured reservoirs. In this paper, DPDP and DFM models are combined to simulate fluid flow in fractured poroelastic media. The control volumes method was used to discretize both flow and poroelasticity equations. Synthetic model of a reservoir with a system of multiscale fractures was used to show the influence of the stress-strain state on the fluid flow.