
科学技术与工程

中国技术经济学会
南华北盆地下古生界地热资源潜力评价
周总瑛 , 邓晓梅 , 周颖 , 贺婷婷 , 高楠桉 , 黄帅博 , 熊翠 , 安超
科学技术与工程 ›› 2026, Vol. 26 ›› Issue (22) :9460-9468
南华北盆地下古生界地热资源潜力评价
Evaluation of Geothermal Resource Potential in the Lower Paleozoic of the Southern North China Basin
南华北盆地处于秦岭-大别造山带和华北板块之间的过渡区,下古生界寒武系-奥陶系岩溶热储发育,但此前缺乏系统性下古生界地热资源评价。通过整合下古生界钻井及地质资料,系统评价南华北盆地下古生界岩溶地热潜力,指出地热资源有利区及资源潜力。研究结果表明:南华北盆地整体上属中低温地热资源,地温梯度整体分布在1.96~2.9 ℃/100 m(平均2.69 ℃/100 m),平面上具有北高南低、东高西低的特点,开封坳陷地温最高(100~200 ℃),太康隆起和周口凹陷多为100~150 ℃,局部存在异常高值点。奥陶系热储厚度40~100 m,孔隙度4%~7%;寒武系厚度相比奥陶系薄,厚度多<15 m,孔隙度较低,一般< 3%。优选太康隆起为下古生界热储有利地区,估算下古生界岩溶岩石中热储热量为55 623.78×1017 J,其中奥陶系占82%。综合构造、储层及地温条件,圈定太康隆起西部(郑州-尉氏县)、东部(扶沟县-太康县-柘城县)为地热开发核心有利区,中部(尉氏县-通许县-杞县)为较有利区。
The southern North China Basin is located in the transition zone between the Qinling-Dabie orogenic belt and the North China Plate. Karst thermal reservoirs of the Lower Paleozoic Cambrian-Ordovician are well-developed in this area, yet a systematic evaluation of the Lower Paleozoic geothermal resources has not been conducted previously. By integrating drilling and geological data of the Lower Paleozoic, the karst geothermal potential of the Lower Paleozoic in the southern North China Basin was systematically evaluated for the first time, and the favorable areas and resource potential of geothermal resources were pointed out. The results show as follows. The southern North China Basin is generally characterized by medium-low temperature geothermal resources, with the geothermal gradient ranging from 1.96 ℃/100 m to 2.9 ℃/100 m (with an average of 2.69 ℃/100 m). On the plane, it presents the characteristics of being higher in the north and east and lower in the south and west. The Kaifeng Depression has the highest geothermal temperature (100~200 ℃), while most areas of the Taikang Uplift and Zhoukou Sag have temperatures of 100~150 ℃, with some local abnormal high-temperature points. The thickness of the Ordovician thermal reservoir is 40~100 m with a porosity of 4%~7%; the Cambrian is thinner than the Ordovician (mostly < 15 m) and has a lower porosity (generally < 3%). The Taikang Uplift is optimized as the favorable area for the Lower Paleozoic thermal reservoirs, and the estimated Lower Paleozoic geothermal resource amount is 55 623.78×1017 J, of which the Ordovician accounts for 82%. Based on a comprehensive analysis of tectonic conditions, reservoir properties and geothermal temperature, the western (Zhengzhou-Weishi County) and eastern (Fugou County-Taikang County-Zhecheng County) parts of the Taikang Uplift are delineated as the core favorable areas for geothermal development, and the central part (Weishi County-Tongxu County-Qixian County) is defined as the relatively favorable area.
南华北盆地 / 下古生界 / 岩溶热储 / 热储法 / 地热资源
Southern North China Basin / Lower Paleozoic / karst thermal reservoir / thermal reservoir method / geothermal resources
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