陈作, 许国庆, 蒋漫旗. 国内外干热岩压裂技术现状及发展建议[J]. 石油钻探技术, 2019, 47(6): 1-8. DOI: 10.11911/syztjs.2019110
引用本文: 陈作, 许国庆, 蒋漫旗. 国内外干热岩压裂技术现状及发展建议[J]. 石油钻探技术, 2019, 47(6): 1-8. DOI: 10.11911/syztjs.2019110
CHEN Zuo, XU Guoqing, JIANG Manqi. The Current Status and Development Recommendations for Dry Hot Rock Fracturing Technologies at Home and Abroad[J]. Petroleum Drilling Techniques, 2019, 47(6): 1-8. DOI: 10.11911/syztjs.2019110
Citation: CHEN Zuo, XU Guoqing, JIANG Manqi. The Current Status and Development Recommendations for Dry Hot Rock Fracturing Technologies at Home and Abroad[J]. Petroleum Drilling Techniques, 2019, 47(6): 1-8. DOI: 10.11911/syztjs.2019110

国内外干热岩压裂技术现状及发展建议

The Current Status and Development Recommendations for Dry Hot Rock Fracturing Technologies at Home and Abroad

  • 摘要: 干热岩是一种储量大、分布广、清洁环保的特殊地热资源,美国、法国等国家已成功开发利用干热岩来发电、取暖,我国很多地区均发育有可大规模开发利用的干热岩资源,但目前尚未得到有效开发和利用。干热岩高效开发对于调整能源结构、强化雾霾治理、应对气候挑战具有重要意义,而压裂技术能在热储层中形成复杂微裂隙系统,从而大幅度增加换热体积,是将干热岩资源转变为能源的关键。在介绍国内外干热岩压裂技术研究现状的基础上,剖析了国外干热岩主体压裂技术的特点,分析了国内干热岩开发面临的形势及压裂技术难点,提出了国内干热岩压裂技术攻关方向,即开展干热岩高温岩石力学及地应力特征、热应力作用下缝网形成机制研究,耐超高温分段/分层压裂工具研制,高温硬地层体积压裂设计方法与软件开发,裂缝长期实时监测技术研究等,以尽快形成适合我国干热岩储层特点的配套压裂技术,加快干热岩资源的开发利用进程。

     

    Abstract: Dry hot rock is a special geothermal resource featuring large reserves, wide distribution, clean energy generation, and recyclability. The United States, France and other countries have successfully developed and utilized dry hot rock to generate electricity and heat. Abundant dry hot rock resources have been developed in southern Tibet, western Yunnan, and the coastal areas of the southeast China, but they have not yet been exploited effectively. The efficient development of dry hot rock is of great significance in adjusting energy structure, reducing environment pollution, and coping with climate change challenges. Proper hydraulic fracturing can generate a complex fracture system in thermal reservoirs that will enhance heat exchange volume, which is the key element in the transformation from dry hot rock resources into energy. Based on the research status of dry hot rock fracturing technologies worldwide, this paper analyzed the characteristics of foreign main dry hot rock fracturing technology, and pointed out the situation and difficulties of fracturing faced in the development of dry hot rock in China. It is recommended in this paper that research focus on high temperature dry hot rock mechanics and in-situ stress characteristics, rupture and extension mechanisms of frac under thermal stress, ultra-high temperature staged/zonal fracturing tools, volume fracturing design method for high temperature hard formation and software development, and long-term real-time monitoring of fractures so as to develop the matched fracturing technology as soon as possible. At that point it can then promote the development and utilization of dry hot rock resources.

     

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