Two main low-enthalpy geothermal fields are present in the UAE: Mubazzarah-Ain Faidha (Al-Ain city) in the Abu Dhabi Emirate and Ain-Khatt in the Ras Al-Khaimah (RAK) Emirate. The chemistry of nineteen waters was analyzed to calculate geothermal reservoir temperatures using cation and silica geothermometers, and to describe the source of recharge of the hot waters from isotopic data. In total, 19 water samples (16 from wells, 2 from springs AF and KT1 and one sea water) were collected and analyzed for major anion and cation concentrations. The isotope and chemical data suggest that the hot waters from Al-Ain (Mubazzarah and Ain Faidha) are almost entirely recharged by rainwater, which originates at higher altitude, heats up through deep water circulation, and travels to the surface through fault structures within the study area. The waters are mainly Na-Cl type, and the discharge temperatures range from 32.5 °C to 49 °C. The Na-K geothermometers predict a geothermal reservoir temperature of 151 °C for the Mubazzarah-Ain Faidha hot waters and 112 °C for the Ain-Khatt hot waters with estimated depth of water penetration of 3.8 km and 2.6 km, respectively. The existing known geothermal resources in the Mubazzarah and Ain Khatt areas can be immediately and sustainably used for low-temperature, direct-use geothermal applications. A stochastic Monte Carlo simulation was performed to estimate the geothermal energy stored in the two main low-enthalpy geothermal fields for 25 years and 50 years. The geothermal electricity potential at Mubazzarah-Ain Faidha is ∼16.5 MWe and ∼8.27 MWe for 25 and 50 years, respectively. The geothermal electricity potential at Ain Khatt is ∼291 kWe and ∼146 kWe for 25 and 50 years, respectively. These preliminary potential assessments are subject to further delineation drilling and availability of field performance data and considered that the geothermal power plant has either a single or multiple ORC systems due to the very low temperature.

阿联酋目前有两个主要的低焓地热田：阿布扎比酋长国的Mubazzarah-Ain Faidha（艾因市）和拉斯·海玛（RAK）酋长国的Ain-Khatt。分析了十九种水的化学性质，以使用阳离子和二氧化硅地热仪计算地热储层温度，并根据同位素数据描述了热水的补给源。总共收集了19个水样本（其中16个来自水井，两个来自AF和KT1泉水，另外一个海水）并分析了主要的阴离子和阳离子浓度。同位素和化学数据表明，来自Al-Ain（Mubazzarah和Ain Faidha）的热水几乎全部被雨水补给，雨水起源于较高的高度，通过深水循环加热，并通过内部的断层结构传到地表。学习区。水主要为Na-Cl型，排放温度范围为32.5°C至49°C。Na-K地热仪预测Mubazzarah-Ain Faidha热水的地热库温度为151°C，Ain-Khatt热水的地热库温度为112°C，估计水渗透深度分别为3.8 km和2.6 km。Mubazzarah和Ain Khatt地区现有的已知地热资源可立即且可持续地用于低温直接使用的地热应用。进行了随机蒙特卡罗模拟，以估计在25年和50年中存储在两个主要低焓地热田中的地热能。在25年和50年内，Mubazzarah-Ain Faidha的地热电势分别为〜16.5 MWe和〜8.27 MWe。在25年和50年的时间里，Ain Khatt的地热电势分别为291 kWe和146 kWe。这些初步的潜力评估还需进行进一步的圈定钻探和现场性能数据的可用性，并考虑到地热发电厂由于温度极低而具有一个或多个ORC系统。