摘要
为了支持中深层地热资源取暖产业化发展,寻找热资源储量大且易于开发利用的地热聚集区和研发相应的高效率可持续开发利用的关键技术至关重要。经过20年的探索与实践,在继承和发展的基础上,我们完善了地热系统源通储盖分析理论原理和地热储层聚热机理的识别方法。在华北牛驼镇凸起上确定了首个大型岩溶热储,并且提出了二元聚热模式,在原有模式上发展为沉积盆地中低温对流-传导复合型地热系统。这是在华北克拉通独特地质构造-热背景上形成的渤海湾盆地特大型地热聚集系统。这个以中上元古界雾迷山组碳酸盐岩为主体的岩溶热储,储层厚度大,温度高、储层孔渗性好、水质优、易开采、好回灌。针对这类地热资源可持续开采而研发的采灌优化设计技术和动态监测与数值模拟技术,形成了一整套热储开采技术。我们基于政、产、学、研相结合的思路,自2009年起,在河北雄县实施了百万平方米级中深层水热型地热清洁取暖示范工程。经过5年左右的建设,于2014年被国家能源局认定为"雄县模式",并向全国推广。该项目超过了冰岛的雷克雅未克地热取暖项目,是迄今为止世界上最大规模的同类地热取暖工程。经过5年以上的运行监测和检验,项目实现了百分之百回灌的高质量发展标准,是真正意义上的地热清洁取暖示范工程。基于大华北地区和全国同类热储的对比研究,我们发现类似的热储还有很多,技术推广应用的前景广阔。
In order to support the industrial development of middle-deep geothermal district heating,it is important to find geothermal aggregation areas with large reserves of heat resources that are easy to develop and utilize,and to develop the corresponding key technologies for efficient and sustainable development and utilization.After two decades of exploration and practice,on the basis of inheritance and development,we have perfected the theoretical principle of geothermal system analysis including source,channel,reservoir and cap rock,and the identification method of geothermal reservoir heat-aggregation mechanism.The first large-scale karst geothermal system was identified on the Northern China Niutuozhen uplift,and a new geothermal genesis model was proposed,which was developed into a low-temperature convection-conduction geothermal system in a sedimentary basin.This is an exceptionally large geothermal system in the Bohai Bay Basin formed on a unique geological-geothermal background.This karst geothermal system is dominated by carbonate rocks of the Wumishan Formation of the Middle and Upper Proterozoic,with large reservoir thickness,high temperature,good reservoir permeability,excellent water quality,easy mining and reinjection.A complete set of reservoir production technologies have been developed for the sustainable utilization of such geothermal resources through the development of production-reinjection optimization technologies,dynamic monitoring and numerical simulation technologies.Based on the combination of political,industrial,academic and research aspects,since 2009,we have implemented a 1 million square meters of geothermal district heating demonstration project in Xiongxian,Hebei.After about five years of construction,it was certificated as the"Xiongxian Model"by the National Energy Administration in 2014 and extended to the whole country.The project is larger than Iceland’s Reykjavik Geothermal Heating Project and is the largest geothermal heating project of its kind in the world to date.After more than 5 years of operation,monitoring and inspection,this project has achieved high quality development standard of 100%reinjection,which is a real demonstration project of geothermal district heating in China.Based on the comparative study of similar reservoir in North China and the whole country,we find that there are many similar reservoirs,and the prospect of technology promotion and application is great.
作者
庞忠和
庞菊梅
孔彦龙
郭世炎
王树芳
黄永辉
罗霁
胡圣标
PANG Zhonghe;PANG Jumei;KONG Yanlong;GUO Shiyan;WANG Shufang;HUANG Yanghui;LUO Ji;HU Shengbiao(Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029;Innovation Academy for Earth Science,CAS,Beijing 100029;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049;Greenenergy Geothermal Company,Xiongxian 712000;Beijing Institute of Hydrogeology and Engineering Geology,Beijing 100195;China Institute of Geo-Environmental Monitoring,Beijing 100081)
出处
《科技促进发展》
CSCD
2020年第3期299-306,共8页
Science & Technology for Development
基金
国家自然科学基金项目面上项目(41877209):牛驼镇地热田深部岩溶热储的聚热机理,负责人:庞忠和
关键词
大型岩溶热储
华北地区
渤海湾盆地
识别方法开采技术
Large-scale karst thermal storage
North China
Bohai Bay Basin
identification method mining technology
作者简介
庞忠和,博士,研究员,博士生导师,研究方向:地热地质和热储工程学。
