单一松软煤层瓦斯抽采工艺数值模拟

Numerical Simulation Used in Single Crumbly Coal Seam Gas Suction Technology

借鉴油气藏数值模拟理论、技术和方法,对单一松软煤层的瓦斯抽采工艺进行了研究分析。根据单一松软煤层特点,提出了单一松软煤层的几何模型技术——单直径球型孔隙模型,在此基础上建立了煤层瓦斯抽采的地质和数理模型,并根据网格差分方法推导出数值解。以实际生产数据对新模型及其数值解进行验证,结果表明该模型可以用于指导单一松软煤层瓦斯抽采工艺的确定。

To borrow ideas from hydrocarbon reservoir numerical simulation theory,technology and methodology carried out study and deduce of single crumbly coal seam gas suction technology.Based on single crumbly coal seam characteristics,put forward its geometric model-single diametric spheroid pore model,thus coal seam gas suction geologic model and mathematical model have been established and numerical solution deduced on the grid finite difference method basis.To use practical production data carried out verification for new model and its numerical solutions,the result has demonstrated that the model can be used to guide single crumbly coal seam gas suction technology determination.