摘要
针对目前地热钻探中,在花岗岩、片麻岩等硬岩地层中机械钻速低的问题,引入一种机械式旋冲螺杆钻具,先后在JHR-1井花岗岩地层及HG-1井片麻岩地层中进行了试验应用。与普通螺杆钻具相比,旋冲螺杆钻具在JHR-1井Ø215.9 mm井段、HG-1井Ø215.9 mm井段和Ø311.2 mm井段机械钻速分别提高了10%、8.4%和7.6%,同时,旋冲螺杆钻具使用过程中未产生其他副作用。试验证明使用旋冲螺杆钻具可以有效地提高花岗岩、片麻岩等硬岩地层的机械钻速,为旋冲螺杆钻具在硬岩地层地热钻探中的应用推广打下了基础。
In view of the problem of low mechanical drilling speed in the hard rock such as granite and gneiss in the geothermal drilling at present,a mechanical rotary‑percussive screw drilling tool is introduced and tested in granite formation of JHR-1 well and gneiss formation of HG-1 well.Compared with the ordinary screw drilling tool,the mechanical drilling speed of the rotary‑percussive screw drilling tool increases respectively by 10%,8.4%and 7.6%inØ215.9 mm well section of JHR-1,Ø215.9 mm andØ311.2mm well section of HG-1,and no other side effects exist during the drilling process.The test proves that the mechanical drilling speed can be effectively improved by the use of rotary‑percussive screw drilling tool,which provides a foundation for the application and popularization of the rotary‑percussive screw drilling tool in the drilling of hard rock such as granite and gneiss.
作者
王勇军
刘刚
佟铮
赵长亮
郑宇轩
冯守涛
WANG Yongjun;LIU Gang;TONG Zheng;ZHAO Changliang;ZHENG Yuxuan;FENG Shoutao(The Second Team of Hydrogeology and Engineering Geology,Shandong Provincial Bureau of Geology&Mineral Resources(Shandong Provincial Lubei Geo‑engineering Exploration Institute),Dezhou Shandong 253072,China;Shandong Engineering Technology Research Center for Geothermal Clean Energy Exploration and Reinjection,Dezhou Shandong 253072,China)
出处
《钻探工程》
2023年第5期146-152,共7页
Drilling Engineering
基金
山东省地质勘查引领示范与科技攻关项目“高温地热超深孔勘查取心钻探关键技术研究与应用”(编号:KY202219)。
关键词
旋冲螺杆钻具
冲击碎岩
硬岩地层
机械钻速
地热钻探
rotary‑percussive screw drilling tool
impact broken rock
hard rock formation
mechanical drilling speed
geothermal drilling