| 河北平原地热流体可采量计算方法及岩溶热储分布规律研究 |
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| 作者姓名： | 张德忠 马云青 苏永强 |
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| 作者单位： | 河北省地矿局第三水文工程地质大队,衡水 053000 |
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| 基金项目： | 中国地质调查局“河北省地热资源现状调查评价与区划(编号: 12120113077300)”项目资助 |
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| 摘 要： | 随着能源供需矛盾的加剧,河北省地热资源开发利用呈快速增长态势,对地热流体可采量及其计算方法的研究亟待加深。通过实例,采用热储法、解析法、统计分析法和数值模拟4种方法对河北平原区层状热储地热流体可开采量进行了评价和对比; 分析了岩涪热储及资源现状。研究认为: 热储法和解析法适合勘查程度较低、无地热井或仅有少量地热开采井和产能试验数据的地热田,其计算精度较低; 统计分析法和数值模拟法适用于勘查程度较高、已开发利用多年、具有多年动态监测资料的地热田,计算结果可靠程度较高; 地热流体中岩溶热储具有温度高、易回灌、可持续性好等特点,主要赋存于古生界和中新元古界地层中; 岩溶热储被新生界地层覆盖,有利于储集层的聚热和保温; 在基岩隆起带(古潜山)岩溶裂隙发育,构成深部热水储集层,可形成有重要开发利用价值的地热田,是下一步地热勘查和开发的主要热储类型。
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| 关 键 词： | 地热流体 可开采量 层状热储 岩溶热储 地热回灌 |
| 收稿时间： | 2017-11-28 |
Study on the calculation of geothermal fluids recoverable quantity and the distribution law of karst geothermal reservoirs in Hebei Plain |
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| Authors: | ZHANG Dezhong MA Yunqing SU Yongqiang |
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| Institution: | The 3rd Hydrogeology and Engineering Group of Hebei Bureau of Geology and Mineral Resources, Hengshui 053000, China |
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| Abstract: | Using geothermal reservoirs method, analytical method, statistical analysis method and numerical simulation method, the authors evaluated and compared the geothermal fluids recoverable quantity of layered geothermal reservoirs in Hebei Plain. Geothermal reservoirs method and analytical method are suitable for geothermal fields with low exploration degree without geothermal wells or with only a small number of geothermal wells and productivity test data, so the calculation precision is relatively low. Statistical analysis method and numerical simulation method are suitable for geothermal fields with high exploration degree and multiple years of development and monitoring data, so the results are reliable. The karst geothermal reservoirs have the characteristics of high temperature, easy recharge and good sustainability, and they mainly occur in the Paleozoic and Middle-Upper Proterozoic strata and are covered by the Cenozoic strata, which is conducive to the thermal accumulation and insulation of the reservoirs. Karst fissures are widely distributed in the uplift zone of the bedrock’ forming deep hot water reservoirs. These reservoirs may develop into geothermal fields with great development and utilization value, and are the major reservoirs for further geothermal exploration and development. |
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| Keywords: | geothermal fluid recoverable quantity layered geothermal reservoirs karst geothermal reservoirs geothermal recharge |
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