摘要
结合贵州省地热钻井设备及井身结构等情况,就气举反循环钻进工艺在地热井施工中的应用,对冲洗液正循环和气举反循环两种钻进工艺原理、设备配套、钻具组合、沉没比、钻进参数等进行了分析和总结。气举反循环钻进工艺在地热井施工中的应用效果,证明了该工艺能够提高溶蚀裂隙地层施工效率,减少孔内事故的发生,同时该工艺在热储层中应用还具有明显的洗井效果。
In the context of geothermal drilling equipment and well structures in Guizhou Province,the application of air-lift reverse circulation drilling technology in geothermal well drilling is summarized,including the direct mud circulation and air-lift reverse circulation principles,drilling equipment,BHA,immersion ratio,drilling parameters and so on.The field results of air-lift reverse circulation drilling technology in geothermal well drilling proved that it can improve the drilling efficiency in dissolved fractured formation,reduce incidents down the holes.At the same time,this technology provides good borehole cleaning in thermal reservoirs.
作者
王剑
王虎
李勇
赵华宣
陈怡
兰永飞
WANG Jian;WANG Hu;LI Yong;ZHAO Huaxuan;CHEN Yi;LAN Yongfei(111 Geological Brigade of Bureau of Geology and Mineral Exploration and Development of Guizhou Province,Guiyang Guizhou 550008,China;Guizhou Geological Engineering Investigation Design and Research Institute,Guiyang Guizhou 550008,China;114 Geological Team,Bureau of Geology and Mineral Exploration and Development of Guizhou Province,Zunyi Guizhou 563000,China)
出处
《探矿工程（岩土钻掘工程）》
2019年第12期18-23,共6页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
贵州省地矿局地质科研资金资助项目“双壁钻杆空气潜孔锤局部反循环钻井工艺在贵州地热深井中的应用研究”(编号:黔地矿科合[2017]1号)
贵州省地矿局地质科研资金资助项目“扭力冲击器在贵州地热井施工中的应用研究”(编号:黔地矿科合[2019]13号)
关键词
地热井
气举反循环钻进
冲洗液
geothermal well
air-lift reverse circulation technology
flushing fluid
