Thermal storage has not yet been classified in a unified way.By analyzing the factors of thermal storage and the interactions of fluids,spaces,and solids,this study proposes a three-level classification scheme based o...Thermal storage has not yet been classified in a unified way.By analyzing the factors of thermal storage and the interactions of fluids,spaces,and solids,this study proposes a three-level classification scheme based on fluid-space-solid thermal storage and dissects the main thermal storage types in the Eryuan,Midu,and Lancang areas of Yunnan Province.The results show that the hydrothermal-karst-carbonate reservoirs of the lower Devonian Kanglang Formation,Carboniferous,and Lower Permian are the main reservoirs in the Eryuan area,the hydrothermal-fracture-carbonate reservoirs are Carboniferous and Lower Permian in the Midu area,and the hydrothermal-fracture-metamorphic reservoirs of the Manlai and Huimin formations are the main reservoirs in the Lancang area.These reservoirs are characterized by high porosity and permeability,high thermal conductivity,high thermal diffusivity,and high specific heat capacity.The classification scheme is systematic,comprehensive,and unified,is capable of conveying multiple information points,and provides a new method for geological exploration personnel to analyze the thermal storage characteristics.展开更多
文摘为研究水渗流作用对顺层钻孔抽采的影响,为抽采工艺参数优化提供理论依据,建立了考虑水渗流场的气水两相流固耦合方程,并利用COMSOL Multiphysics软件对赵庄矿1309工作面顺层钻孔的抽采负压与钻孔间距进行参数优化。研究结果表明:随着抽采时间增加,煤层水压与水相相对渗透率均快速下降后趋于稳定不变,气相相对渗透率先升高后不变,煤层瓦斯压力在抽采过程中逐步降低;抽采负压改变对煤层相对渗透率几乎无影响;在相同预抽时间里,抽采影响半径与抽采负压呈指数函数关系,抽采负压由15kPa提高到27kPa,可降低煤层瓦斯压力,有效影响半径扩散明显,超过27 k Pa变化不再明显;钻孔间距设置为4.5 m可在预抽期内满足抽采要求且节约施工成本。
文摘Thermal storage has not yet been classified in a unified way.By analyzing the factors of thermal storage and the interactions of fluids,spaces,and solids,this study proposes a three-level classification scheme based on fluid-space-solid thermal storage and dissects the main thermal storage types in the Eryuan,Midu,and Lancang areas of Yunnan Province.The results show that the hydrothermal-karst-carbonate reservoirs of the lower Devonian Kanglang Formation,Carboniferous,and Lower Permian are the main reservoirs in the Eryuan area,the hydrothermal-fracture-carbonate reservoirs are Carboniferous and Lower Permian in the Midu area,and the hydrothermal-fracture-metamorphic reservoirs of the Manlai and Huimin formations are the main reservoirs in the Lancang area.These reservoirs are characterized by high porosity and permeability,high thermal conductivity,high thermal diffusivity,and high specific heat capacity.The classification scheme is systematic,comprehensive,and unified,is capable of conveying multiple information points,and provides a new method for geological exploration personnel to analyze the thermal storage characteristics.
