Abstract
The finite-element formulation of a coupled fluid flow and geomechanics for two-phase fluid flow through fractured porous media is presented. Two porosities, pores and fractures, and five phases are introduced. The two fluids are taken as wetting and non-wetting. The governing equations are derived based on the theory of poroelasticity, the effective stress principle, and the balance equations of mass and momentum, taking into account the solubility of non-wetting fluid into wetting fluid. Spatial and temporal discretisation of the governing equations have been realised through Galerkin method and the finite difference technique, respectively. A three-dimensional numerical code has been developed and validated based on the previously published data in the literature. Various applications of the model have been demonstrated through three field-scale examples.
| Original language | English |
|---|---|
| Journal | International Journal of Geomechanics |
| Volume | 16 |
| Issue number | 3 |
| Number of pages | 14 |
| ISSN | 1532-3641 |
| DOIs | |
| Publication status | Published - 2015 |
| Externally published | Yes |
Keywords
- Double-porosity medium
- Fractured reservoirs
- Two-phase fluid flow
- Coupled formulation