Aug 2026· Applied Sciences· Vol 16, pp. 8396· 0 citations· 26 references
Abstract
This study employs COMSOL Multiphysics to build a hydromechanical (HM) coupling model for shale gas production based on classic poroelasticity and Darcy’s law. Considering effective stress variation during depletion, a stress-dependent permeability model is incorporated into the dual-porosity framework. Numerical simulations evaluate three extraction methods—single-well, dual-well, and single-well with hydraulic fracturing—on pressure in the fracture system, permeability evolution, and gas production. The results show consistent fracture permeability decline with extraction, more pronounced in early stages. Single-well hydraulic fracturing accelerates pressure reduction to 6.7 × 105 Pa after one year, equivalent to five years of conventional production. The dual-well model exhibits negligible boundary effects but notable inter-well interference on permeability. These findings provide a preliminary reference for well spacing analysis and fracturing design in shale gas development.
: This study develops a multi-mechanism numerical simulation framework for shale gas reservoirs to quantify the coupled effects of gas transport mechanisms, stress sensitivity, and inter-well interference during infill horizontal well development. The model is formulated within the Embedded Discrete Fracture Model (EDF...
Yi Song, Cheng Shen, Wen-Feng Yu et al.· Fluid Dynamics & Materia...· 0 citations
Shale gas reservoirs are characterized by low permeability, nanoscale pore structures, and complex fracture networks. Multistage fractured horizontal wells are an important technology for commercial shale gas development. However, many shale gas productivity models primarily emphasize gas transport within the reservoir...
To During the development and construction of a gas storage facility, the in-situ stress state of the reservoir undergoes dynamic cyclic variations due to natural gas injection and condensate production. Gas injection increases pore pressure within fractures, which may activate natural fractures or induce fault slip,...
Song-Bai Zhu, Jie Zhang, Can Cui et al.· GOTECH· 0 citations
Coal reservoirs exhibit strong heterogeneity and complex in situ stress conditions, and the initiation and propagation of hydraulic fractures are jointly controlled by reservoir geology and perforation design. A damage–seepage coupled numerical model was established on the COMSOL Multiphysics platform (Version 6.2) by...
Bao-Lei Xie, Zhi-Wen Xue, Yong-Qiang Ma et al.· Processes· 0 citations
Reliable pressure-transient interpretation for deep shale gas wells requires the thermal response of fractured reservoirs to be considered. This study develops a fully coupled nonisothermal numerical well test model for multistage fractured horizontal wells (MFHWs). The model is formulated within the analytically enh...
Natural gas hydrate (NGH) dissociation during depressurization-based production alters pore pressure and temperature, modulating effective stress, weakening the sediment framework, and yielding sand production. This leads to particle detachment, migration, pore clogging, and ultimately, fluid production instability....
Ting-Wei Li, Guang-Lei Cui, Chen-Lu Xu et al.· Energy & Fuels· 0 citations
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