Abstract This paper presents new fully-coupled analytical thermo-poroelastic solutions, introducing four new components to the traditional Local Thermal Non-Equilibrium (LTNE) theory: thermo-osmosis; thermal-filtration; heat sinks due to thermal expansion of the pore fluid and the solid phase; and vertical confinement. Thermo-osmosis, thermal-filtration, and fluid dilation are found to have very different effects in case of LTNE versus local thermal equilibrium (LTE), resulting in a fundamentally different thermo-hydraulic-mechanical (THM) response. The aforementioned non-traditional thermal processes cause generation of notably higher pore pressures in the porous medium that cannot be otherwise predicted using current solutions. Fluid temperatures are more sensitive to these non-traditional thermal processes, compared to the solid phase temperatures. Thermo-osmosis is found to have more significant effects under LTNE compared to LTE, and to be the dominant mechanism affecting solid temperatures, pore pressures and stresses. Thermal-filtration and heat sink due to fluid thermal expansion are the dominant mechanisms affecting fluid temperatures. The vertical confinement and formation anisotropy is shown to notably impact the THM response of a porous layer to heat source or sink. The impact of the aforementioned four novel components are found to be enhanced under an impermeable hydraulic boundary compared to a permeable boundary condition.

中文翻译：

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考虑热渗透和热过滤的饱和多孔介质中局部热非平衡效应对热增压的影响

摘要 本文提出了新的全耦合分析热多孔弹性解决方案，为传统的局部热非平衡 (LTNE) 理论引入了四个新组件：热渗透；热过滤；由于孔隙流体和固相的热膨胀而散热；和垂直限制。发现热渗透、热过滤和流体膨胀在 LTNE 与局部热平衡 (LTE) 的情况下具有非常不同的影响，导致根本不同的热液压机械 (THM) 响应。上述非传统热过程导致在多孔介质中产生显着更高的孔隙压力，这是使用当前解决方案无法预测的。流体温度对这些非传统的热过程更敏感，与固相温度相比。与 LTE 相比，热渗透在 LTNE 下具有更显着的影响，并且是影响固体温度、孔隙压力和应力的主要机制。由于流体热膨胀引起的热过滤和散热器是影响流体温度的主要机制。垂直限制和地层各向异性显着影响多孔层对热源或热汇的 THM 响应。发现与可渗透边界条件相比，在不可渗透的水力边界下，上述四种新型组件的影响得到增强。由于流体热膨胀引起的热过滤和散热器是影响流体温度的主要机制。垂直限制和地层各向异性显着影响多孔层对热源或热汇的 THM 响应。发现与可渗透边界条件相比，在不可渗透的水力边界下，上述四种新型组件的影响得到增强。由于流体热膨胀引起的热过滤和散热器是影响流体温度的主要机制。垂直限制和地层各向异性显着影响多孔层对热源或热汇的 THM 响应。发现与可渗透边界条件相比，在不可渗透的水力边界下，上述四种新型组件的影响得到增强。