| 南华北盆地裂隙型地热资源控热勘查模式——以嵩箕山前断裂带为例 |
| 投稿时间：2025-06-11 修订日期：2025-09-08 点此下载全文 |
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| 基金项目:2025年度河南省科技攻关项目“基于岩屑图像识别的钻头磨损评价方法研究”、中国地质科学院基本科研业务费项目“深部带状热储赋存特征及成藏模式”(JKYQN202307)、河南省地质科研项目“基于深度学习的薄储层含气特征地震分析方法原理”(2025-904-XM01)和“基于岩屑图像识别的钻头磨损评价方法研究”(2025-904-XM04)联合资助。 |
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| 中文摘要:位于南华北盆地西南缘的嵩箕山前断裂带是研究区域裂隙型地热资源控热机制与开发模式的关键区带。本文综合研究区地质构造特征、重力异常反演、钻井测试与数值模拟等方法，重点分析了嵩箕山地区裂隙型地热系统的空间结构、控热断裂特征与热储分布规律。研究表明：①区域NW向与NE向断裂交汇构成热储聚集与导热的有利构造背景，构造活动对热储类型与分布具有明显控制作用；②重力异常识别结果揭示研究区隐伏断裂结构清晰，构造格架与重力异常区呈良好对应关系；③数值模拟结果显示井距为400 m时可实现较优的换热效率与水位控制效果，钻井实测温度与水位验证了模拟成果；④本研究提出了“构造控热–重力场多参数增强–数值模拟–实钻验证”的裂隙型地热资源勘查技术路径，适用于城市建成区高干扰环境下的裂隙型热储识别与优化开发。该研究可为南华北盆地及类似构造区裂隙型地热资源的可持续开发提供理论依据与技术示范。 |
| 中文关键词:裂隙型热储 构造控热机制 地球物理识别 数值模拟 勘查模式 |
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| Heat-Controlled Exploration Model of Fractured Geothermal Resources in the Southern North China Basin: A Case Study of the Piedmont Fault Zone of Songjishan |
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| Abstract:Located in the southwestern margin of the South North China Basin, the piedmont fault zone of Songjishan is a key area for studying the heat-controlling mechanism and exploration model of fractured geothermal resources. This study integrates regional geological structures, gravity anomaly inversion, drilling tests, and numerical simulations to analyze the spatial structure of the fractured geothermal system, fault-controlled thermal characteristics, and reservoir distribution patterns in the study area. The results show that: (1) The intersecting NW- and NE-trending faults provide a favorable structural background for geothermal reservoir accumulation and heat conduction, exerting strong control over reservoir type and distribution; (2) Gravity anomaly interpretation identifies concealed faults clearly, and the tectonic framework aligns well with anomaly zones; (3) Numerical simulation results suggest that a well spacing of 400 m achieves optimal heat exchange and water level control, and drilling measurements confirm the simulated temperature and hydraulic conditions; (4) A fractured geothermal exploration model characterized by “fault-controlled heat conduction – multi-parameter enhancement of the gravity field – numerical simulation – drilling validation” is proposed and successfully applied in urban built-up areas with strong interference. This research provides a theoretical and technical reference for the sustainable development of fractured geothermal resources in the South North China Basin and other structurally similar regions. |
| keywords:Fractured geothermal reservoir Fault-controlled thermal mechanism Geophysical identification Numerical simulation Exploration model |
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