Three-dimensional finite element simulation of three-phase flow in a deforming fissured reservoir |
| |
Affiliation: | 1. Service de Metrologie Nucleaire, Universite Libre de Bruxelles (CP165/84), Avenue F.D.Roosevelt, 50 1050 Bruxelles, Belgium;2. Institute of Radiological Protection and Nuclear Safety, PRP-DGE/SRTG/LETIS, BP 17, 92262 Fontenay-aux-Roses, France;3. Bel V Rue Walcourt 148, 1070 Anderlecht, Belgium;4. Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland;1. CEA Marcoule, DTCD/SECM/LCLT, BP 17171, 30207, Bagnols-sur-Cèze Cedex, France;2. MINES ParisTech, PSL Research University, Centre de Géosciences, 77305, Fontainebleau, France;3. BRGM – French Geological Survey, 3 avenue Claude Guillemin, 45060, Orléans, France;1. Laboratory of Heat and Mass Transport at Micro-Nano Scale, College of Engineering, Peking University, Beijing 100871, China;2. School of Sciences, Nanchang University, Jiangxi 330031, China;1. School of Safety Engineering, China University of Mining and Technology, Xuzhou 221008, China;2. Key Laboratory of Gas and Fire Control for Coal Mines, Xuzhou 221008, China;3. Department of Civil & Environmental Engineering, University of Alberta, Edmonton T6G 2W2, Canada |
| |
Abstract: | The development of a capacity to predict the exploitation of structurally complicated and fractured oil reservoirs is essential for the rational use of investment capital. A poor understanding of how the reservoir behaves during production may lead to inept, costly and inefficient development schemes. The mathematical formulation of a three-phase, three-dimensional fluid flow and rock deformation in fractured reservoirs is hence presented. The present formulation, consisting of both the equilibrium and multiphase mass conservation equations, accounts for the significant influence of coupling between the fluid flow and solid deformation, an aspect usually ignored in the reservoir simulation literature. A Galerkin-based finite element method is applied to discretise the governing equations in space and a finite difference scheme is used to march the solution in time. The final set of equations, which contain the additional cross coupling terms as compared to similar existing models, are highly non-linear and the elements of the coefficient matrices are updated implicitly during each iteration in terms of the independent variables. A field scale example is employed as an alpha case to test the validity and robustness of the currently formulation and numerical scheme. The results illustrate a significantly different behaviour for the case of a reservoir where the impact of coupling is also considered. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|