化学刺激技术在增强型地热系统中的应用：理论、实践与展望-《地球科学与环境学报》

文章信息/Info

Title:: Application of Chemical Stimulation Technology in Enhanced Geothermal System: Theory, Practice and Expectation

作者:: 刘明亮; 庄亚芹; 周超; 朱明成; 张灿海; 朱永强; 谭龙; 骆进; 郭清海; 1.中国地质大学(武汉) 地质调查研究院,湖北武汉430074; 2.中国地质大学(武汉) 环境学院,湖北武汉430074;3.国家电力投资集团黄河上游水电开发有限责任公司,青海西宁 810008; 4.中国地质大学(武汉) 工程学院,湖北武汉430074

Author(s):: LIU Ming-liang; ZHUANG Ya-qin; ZHOU Chao; ZHU Ming-cheng; ZHANG Can-hai; ZHU Yong-qiang; TAN Long; LUO Jin; GUO Qing-hai; 1. Institute of Geological Survey, China University of Geosciences, Wuhan 430074, Hubei, China;2. School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China;3. Huanghe Hydropower Development Co., Ltd., State Power Investment Corporation, Xining 810008, Qinghai, China; 4. Faculty of Engineering, China University of Geosciences, Wuhan 430074, Hubei, China

Keywords:: enhanced geothermal system; chemical stimulation; reservoir reform; mud acid; retarded acid; chelating agent; hot dry rock; hydrofracture

摘要:: 干热岩作为清洁的可再生能源是地热能未来开采和利用中最具潜力的部分,具体的开发工程技术称为增强型地热系统(EGS, Enhanced Geothermal System)。化学刺激技术作为水力压裂的一种辅助方法,具有成本低、风险小的特点,在完善储层改造方面具有重要作用。综述了国内外EGS关于化学刺激研究的相关文献,介绍了化学刺激技术的理论基础及常用的几种化学刺激剂(传统酸、缓速酸、螯合剂和CO₂化学刺激剂),并对世界上仅有的几个使用化学刺激技术的EGS工程(美国Fenton Hill和法国Soultz干热岩项目)进行了介绍和总结,在此基础上提出了化学刺激剂在增强型地热系统中的研究建议及应用展望,以期为中国未来EGS的科学研究和项目实施提供参考。

Abstract:: As a clean and renewable energy, hot dry rocks are the most potential part of exploiting and utilizing in the future, and the engineering technology of exploiting hot dry rock is called enhanced geothermal system. As a supplementary method of hydrofracture, chemical stimulation technology has the characteristics of low cost and risk, and plays a very important role in optimizing reservoir reform. Some related literatures at home and abroad about chemical stimulation technology in enhanced geothermal system (EGS) were reviewed, and the theoretical basis of chemical stimulation technology and several common chemical stimulants (conventional acid, retarded acid, chelating agent and CO₂chemical stimulants) were presented. In addition, the only EGS projects (Fenton Hill in America and Soultz in France) applying chemical stimulation technology in the world were introduced and summarized. On this basis, several suggests and expectations about chemical stimulation in EGS were also proposed, hoping to provide a reference for the scientific research and project implementation of EGS in China.