The model reveals significant impacts of microwave heating on gas production in shale reservoirs, suggesting enhanced extraction methods.
Hydraulic fracturing is difficult to solve the technical problems of full life cycle development. Combined with microwave stimulation technology, it can increase the recovery rate of unconventional gas reservoirs. The current models mainly consider the desorption of adsorbed gas caused by microwave heating but ignore the influence of microstructure evolution. By introducing the fractal dimension that characterizes the microstructure of the reservoir and the electromagnetic wave radiation equation, an electromagnetic-thermal-fluid-solid three-medium fractal coupling model is established. The influences of gas adsorption and desorption, effective stress, and reservoir temperature under microwave heating conditions are considered. The gas production in the reservoir with or without microwave and the changes of reservoir parameters are investigated. The influence of initial fracture fractal dimension on gas pressure distribution and reservoir gas production was explored. The following conclusions are drawn: (1) Microwave power has a significant impact on reservoir parameters and the evolution of microstructure, and this influence relationship is nonlinear. (2) The effect of microwave heating on increasing shale gas production is very remarkable, with an increase in up to 65% compared to the case without microwave action. (3) Microwave heating can effectively promote the desorption of methane that is adsorbed in the kerogen system.
No takes yet. Share an insight, caveat, or question.
Wang et al. (2025) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: