A FULLY COUPLED THERMO-HYDRO-MECHANICAL MODEL FOR METHANE HYDRATE RESERVOIR SIMULATIONS
A fully coupled thermo-hydro-mechanical model is proposed to simulate the complex performances of methane hydrate reservoirs during gas production. The model is based on the fully coupled theories of multiphase fluid flow, heat transfer and deformation in methane hydrate media. With this model, a robust numerical simulator is developed by use of the Galerkin finite element method and the hybrid Eulerian-Lagrangian approach. The simulator can consider the phase change due to hydrate dissociation, the flow of pore water and gas, the heat transfer due to convection and conduction, and the geomechanical phenomena of reservoirs such as compaction, subsidence, casing damage and wellbore stability, etc. Numerical analyses of a methane hydrate reservoir by a depressurizing well are performed by using this simulator. Results reveal some thermal and mechanical characteristics of reservoirs and also indicate the capability of the simulator in designing gas production schemes.
methane hydrate reservoir gas production numerical simulation
Huo-Lang FANG
Department of Civil Engineering, Zhejiang University, Hangzhou 310058, P.R.China
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
455-461
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）