期刊
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
卷 129, 期 -, 页码 39-54出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.enganabound.2021.04.018
关键词
Meshless method; Gas-water two-phase flow; Dual-medium model; Moving least square; Weighted least square method
资金
- Cooperative Innovation Center of Unconventional Oil and Gas (Ministry of Education & Hubei Province) ,Yangtze University [UOG2020-17]
- National Natural Science Foundation of China [52004033, 51922007]
This paper used a meshless method to study water-gas flow in a dual-medium shale gas reservoir model. The method was validated through a numerical reservoir model with a rectangular boundary shape, and parametric analysis was performed to investigate the impact of reservoir physical parameters on shale gas production.
This paper used meshless method to study water-gas flow in dual-medium shale gas reservoir model. In which moving least square is adopted for local approximation of fracture pressure, water saturation and matrix pressure, and weighted least square method is used to construct discrete scheme of flow equations. A numerical reservoir model with a rectangular boundary shape validates the high accuracy of presented method. Then parametric analysis of a complex-shape shale gas reservoir numerical model illustrate the stability and convergence of presented method and the effect of reservoir physical parameters on shale gas production. In all, this presented method may provide an efficient and accurate technology for numerical simulation of gas-water flow of real complex-shape shale gas reservoir, and this idea may provide a reference for the numerical simulation of other flow problems in real reservoirs with complex boundary shape or geological conditions.
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