The Geothermal Battery Energy Storage concept has been proposed to provide large-scale heat storage when solar radiance is available, to be later recovered for economic benefit. The concept uses solar radiance to heat water on the surface which is then injected into a suitable subsurface formation. This hot water elevates the ambient formation temperature creating a high-temperature geothermal reservoir acceptable for geothermal electricity generation or direct heat applications. The process uses produced/injected, connate formation water and thus neither freshwater nor surface storage or disposal of water is required. This concept has been previously presented in several publications and presentations. Calculations of reservoir temperature and pressure profiles in isotropic and homogeneous reservoirs have been published previously by the authors. These calculations have shown that a small volume of rock mass is required for the heat storage reservoir, of the order of tens of meters radius from an injection well in a reservoir of one-hundred meters thickness. It was shown that over ninety percent of heat can be recovered for certain reservoirs. The previous calculations for the Geothermal Battery Energy Storage considered only isotropic and homogeneous reservoir formation properties. However, even in a small rock mass volume, considering sedimentary depositional environments and superimposed tectonics, the rock permeability may be anisotropic and heterogeneous with reservoir layers of different properties. Calculations are presented here considering anisotropic permeabilities, and layered heterogeneous permeabilities i.e., formations with horizontal layers of different permeabilities. Such reservoir properties create non-symmetrical temperature and pressure profiles away from a well, which is critical for well layout and planning for injection and production.

中文翻译：

---

渗透率各向异性和分层对地热电池储能的影响

地热电池储能概念已被提议用于在太阳辐射可用时提供大规模的热量存储，以便稍后回收以获取经济效益。该概念使用太阳辐射来加热地表的水，然后将水注入合适的地下地层。这种热水提高了周围地层温度，形成了一个高温地热储层，可用于地热发电或直接供热应用。该工艺使用生产/注入的原生地层水，因此不需要淡水、地表储存或处理水。这个概念之前已经在一些出版物和演示文稿中提出过。作者先前已发表了各向同性和均质储层中储层温度和压力剖面的计算。这些计算表明，储热储层需要少量岩体，距离一百米厚的储层中的注入井的半径约为数十米。结果表明，某些水库可以回收超过 90% 的热量。先前对地热电池储能的计算仅考虑了各向同性和均质储层的形成特性。然而，即使在较小的岩体体积中，考虑到沉积沉积环境和叠加构造，岩石渗透率也可能具有各向异性和非均质性，储层具有不同的性质。此处给出了考虑各向异性渗透率和分层非均质渗透率（即具有不同渗透率的水平层的地层）的计算。