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四川雅安周公 2井高温热矿水位于井深 180 0m以下 ,为赋存于三叠系雷口波组、嘉陵江组及二叠系茅口组碳酸盐岩地层中的岩溶水 ,盖层为侏罗系及上三叠统的碎屑岩层。初步测试关闭时井下压力 3Mpa ,井口水温达 75℃ ,流量约5 0 0 0t/d。通过对热矿水的14 C及U系法定年及其周围山区地表水氢氧同位素一次性采样及分析 ,研究结果表明 ,周公 2井热矿水系大气降水成因 ,补给区可能为其西部及西南部山区 ,即荥经河、荥河、冷水河以及周公河流域 ,海拔高程大体在15 0 0～ 2 5 0 0m左右。盆地上部主要为第四系—侏罗系赋存于砂砾岩中的孔隙水 ,而盆地深部的热矿水则是山区降水沿断裂裂隙及岩溶管道垂直入渗经深循环至盆地底部 ,两者并无水力联系。
The high-temperature hot mineral water of Zhougong-2 well in Ya’an of Sichuan Province is located below 180 m in well depth and is karst water occurring in the Triassic Liugoubo Formation, Jialingjiang Formation and Permian Maokou Formation carbonate rock formation. Luo system and the Triassic clastic rocks. Initial test downhole pressure 3Mpa, wellhead temperature reached 75 ℃, flow rate of about 5 0 0 0t / d. Through the one-time sampling and analysis of the hydrogen and oxygen isotopes of surface water in the 14 C and U-series of the hot mineral water and the surrounding mountainous areas, the results show that the cause and recharge area of the atmospheric water in the Zhougong-2 well may be the west and southwest The mountainous areas, namely, Sui Jing River, Ba River, Lengshui River and Zhougong River Basin, have an elevation of about 15 0 0 ~ 25 0 0 m. The upper part of the basin is mainly composed of pore water in Quaternary-Jurassic occurring in glutenite, while the hot mineral in the deep part of the basin is the mountain precipitation along the fractured fissures and the vertical infiltration of karst pipe through deep circulation to the bottom of the basin, both No hydraulic connection.