| 河南省水热型地热成因模式及钻探方法 |
| 投稿时间：2020-06-29 修订日期：2020-08-27 点此下载全文 |
| 引用本文：张晗,卢玮,黄烜,等.河南省水热型地热成因模式及钻探方法[J].钻探工程,2020,47(9):8-14,20.ZHANG Han,LU Wei,HUANG Xuan,et al. Generation model and drilling method of hydrothermal geothermal resources in Henan Province[J]. Drilling Engineering, 2020,47(9):8-14,20. |
| 摘要点击次数: 2049 |
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| 基金项目:河南省地勘基金项目“河南省干热岩资源潜力调查评价”（编号：20172215）、“河南省郑州西部岩溶地热资源调查”（编号：20192247）；河南省自然资源厅科技攻关项目“河南省隐伏干热岩资源勘查及评价技术研究”（编号：20201651）；河南省地矿局2020年度局管地质环境项目“河南省地热开发产业化关键技术研究及集成”（编号：豫地环〔2020〕4号） |
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| 中文摘要:按照热储赋存的地质环境划分，河南省水热型地热资源有沉降或沉积盆地、山前盆地和山地隆起3种类型。由深部大断裂对流热传导和侵入岩热传导提供高温热源，并与新近系、古近系和古生界浅层地下水进行热交换，最终形成孔隙型、裂隙型和岩溶型地热资源。“十四五”期间，河南省的水热型地热资源勘查开采目的层主要以1800～4000 m岩溶热储为主，这将对地热钻探工程带来新的挑战。根据地层特点和经验，提出了深部地热钻探应该遵循“绿色环保、高质高效、安全健康”的总体原则。针对地层特征和钻探要求，首先选择空气钻进（空气潜孔锤、气举反循环、空气正循环回转取心），其次选择钻井液+空气（气举反循环），最后选择钻井液（回转+螺杆）等，实现“一井多工艺”的复合钻探方法。 |
| 中文关键词:水热型地热 钻探方法 空气钻进 河南省 |
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| Generation model and drilling method of hydrothermal geothermal resources in Henan Province |
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| Abstract:According to the geological environments where the geothermal resources occur, hydrothermal geothermal resources in Henan Province can be classified into 3 types: subsidence or sedimentary basin, piedmont basin and mountain uplift. High heat temperature sources from convection heat transfer in deep mega geotectonics and heat conduction in intrusive rocks formed pore, fissure and karst geothermal resources through heat exchange with Neogene, Paleogene and Paleozoic shallow groundwater. During the 14th five-year Plan Period, the exploration and development of hydrothermal geothermal resources in Henan is mainly focused on karst heat storage at depth of 1800 to 4000m. This will bring a new challenge to geothermal drilling engineering. According to formation characteristics and experience, it is proposed that deep geothermal drilling should follow the general principle of “eco-friendliness, high quality and efficiency, safety and health”. In regard to formation characteristics and drilling requirements, the drilling process will be selected in the order of priority as below: first, air drilling (pneumatic DTH hammer, air-lift reverse circulation, positive air circulation core-drilling); second, drilling fluid + air (air-lift reverse circulation); and finally, drilling fluid (rotary + PDM); thus achieving the compound drilling method with multiple drilling processes in one well. |
| keywords:hydrothermal geothermal drilling method air drilling Henan Province |
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