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NUMERICAL SIMULATION OF COAL-BED METHANE
SEEPAGE FLOW UNDER MULTI-WELL EXPLOITATION CONDITIONS |
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Abstract Adoption of multi-well mining technology to exploit coal-bed methane is still under the preliminary trial stage in China. Theoretical research on the multi-well mining technology is also insufficient，fortunately the numerical simulation can be able to provide certain theoretical guidance for coal-bed methane multi-well exploitation. The model of permeable equation considering multi-well exploration conditions is set up；and the pressure field distributions under single well and multi-well exploration conditions are simulated with finite element method. The influence of well space changes on the distribution of pressure field is studied under the well group exploration conditions；and the velocity field of coal-bed methane distribution under nonlinear seepage condition is investigated with the coal-bed methane permeable equation. The conclusions display the change rule of the seepage field and the coal-bed methane production under the multi-well exploitation conditions，and the numerical simulation result demonstrates the superiority of multi-well exploitation. The achieved results can provide significant references to the enhancement of the coal-bed methane output and coal-bed methane industrialization mining.
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Received: 31 July 2006
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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