南阳市碳酸盐岩地热流体同位素特征分析
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摘要
南阳市赋存有丰富的地热资源,热储类型主要有新近系孔隙热储、古近系裂隙孔隙热储和元古界碳酸盐岩溶蚀裂隙热储。目前主要的开采层位是古元古界碳酸盐岩热储。根据南阳市古元古界大理岩及邻区新生界地热流体、温泉等不同热储层地热流体同位素测试结果,采用化学温标计算方法,结合河南省大气降水方程对南阳市碳酸盐岩地热流体同位素特征进行分析。结果表明:南阳市古元古界碳酸盐岩热储源自大气降水,补给区高程1438 m～1547 m,循环深度1500 m～2500 m,热储温度63.42℃～79.09℃。结果可为南阳市地热重点开采层位流体资源研究提供参考。
There are abundant geothermal resources in Nanyang. The heat storage types mainly include the Neogene Pore Heat Reservoir, the Paleogene Fissure Porosity Heat Reservoir and the Proterozoic Carbonate Rock Fracture Fissure Heat Reservoir. At present, the main mining horizon is the ancient archaeological carbonate thermal reservoir. According to the geothermal fluid isotope test results of different thermal reservoirs such as the Paleozoic marble and neighbourhood newborn geothermal fluid in Nanyang City, combined with the atmospheric precipitation equation of Henan Province, adoptting chemical temperature scale method, the geothermal isotope of carbonate rocks in Nanyang City Characteristics are analyzed and studied.The results showed that: the thermal storage of the Paleocarbon carbonate rocks in Nanyang City comes from atmospheric precipitation. The elevation of the recharge area is 1438 m～1547 m, the circulation depth is 1500 m ～2500 m, and the heat storage temperature is 63.42℃～79.09℃. The results can provide a reference for the study of fluid resources in the key strata of geothermal exploitation in Nanyang.
There are abundant geothermal resources in Nanyang. The heat storage types mainly include the Neogene Pore Heat Reservoir, the Paleogene Fissure Porosity Heat Reservoir and the Proterozoic Carbonate Rock Fracture Fissure Heat Reservoir. At present, the main mining horizon is the ancient archaeological carbonate thermal reservoir. According to the geothermal fluid isotope test results of different thermal reservoirs such as the Paleozoic marble and neighbourhood newborn geothermal fluid in Nanyang City, combined with the atmospheric precipitation equation of Henan Province, adoptting chemical temperature scale method, the geothermal isotope of carbonate rocks in Nanyang City Characteristics are analyzed and studied.The results showed that: the thermal storage of the Paleocarbon carbonate rocks in Nanyang City comes from atmospheric precipitation. The elevation of the recharge area is 1438 m～1547 m, the circulation depth is 1500 m ～2500 m, and the heat storage temperature is 63.42℃～79.09℃. The results can provide a reference for the study of fluid resources in the key strata of geothermal exploitation in Nanyang.
引文
[1]龚晓洁、田良河、罗文金,等.南阳盆地周边地区地热资源调查研究报告[R].河南:河南省地质调查院,2016.
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[3]葛雁,王现国,王晓华,等.灵宝盆地地下热水同位素特征分析[J].人民黄河,2012,34(4):48-51.