摘要
干热岩是一种清洁、环保、可循环利用的再生能源,开发潜力巨大,是最具环保性能的未来清洁能源。概述了美国、英国、日本、法国、澳大利亚和中国干热岩工程项目,依据干热岩岩体硬度高、可钻性差、地层温度高等特点,指出了干热岩钻完井工程存在的技术难题,主要包括钻井效率低、地层温度高、井壁稳定性差、井漏现象严重等问题;针对钻完井存在的技术难题,分析了干热岩高效破岩工具、钻井液技术、高温固井技术、控压钻井技术、膨胀套管技术、定向井技术和液氮钻井等关键技术在干热岩中应用的未来趋势。
Dry hot rock, as a clean, environment-friendly and recyclable renewable energy, will be the most environment- friendly clean energy in the future. Dry heat rock engineering projects in the United States, Britain, Japan, France, Australia and China are introduced. According to the characteristics of dry-hot rock mass, technical problems existing in dry-hot rock drilling and completion engineering are analyzed, including low drilling efficiency, high formation temperature, poor wellbore stability, and serious leakage. In view of the aforementioned technical problems, the future developments of key technologies such as efficient rock breaking tools, drilling fluid technology, high temperature cementing technology, pressure control drilling technology, expansion casing technology, directional well technology and liquid nitrogen drilling in dry and hot rock are prospected and analyzed.
作者
王志刚
胡志兴
李宽
李鑫淼
WANG Zhigang;HU Zhixing;LI Kuan;LI Xinmiao(The Institute of Exploration Techniques, Chinese Academy of Geological Sciences, Langfang 065000, China;The Second Geological Tea m of Heibei Coal Geology Bureau, Xingtai 054000, China)
出处
《科技导报》
CAS
CSCD
北大核心
2019年第19期58-65,共8页
Science & Technology Review
基金
中国地质调查局地质调查项目(DD20190136)
关键词
干热岩
钻完井
钻井工程技术
dry hot rock
drilling and completion
drilling engineering technology