Numerical Study of Multi-phase Flow in Pressure-sensitive Fractured Formation

Shaohua Gu


Dynamic Fracture, which is caused by the increasing of fluid pressure, has three possible outcomes: creation of new fractures, activation of faults, and activation of fracture networks. Non-linear flow can be detected through core flooding experiments. The main features of a water-flooding zone can be observed as heterogeneous water-flooding, pre-existing fractures, anisotropic permeability.

The Key factors for simulating pressure-sensitive fractured reservoir include: pressure-sensitive formation, non-linear flow, dynamic fractures, anisotropic permeability, and two phase flow in fracture-matrix system. Both Geomechanics and two phase flow models are established, and the Barton-Batis model is applied to develop the fracture model.