摘要
将液动贯通式冲击器同水力反循环连续取心钻进工艺相结合，较好地解决了岩心卡堵问题，提高了钻进效率及钻头寿命，具有很好的应用前景。
The combination of the fluid powered central hollow DTH hammer with the hydraulic reverse circulation con coring process eliminates the core blockage, resulting in higher drilling efficiency and longer bit life, and providing a good application prospect
出处
《探矿工程》
1998年第3期27-28,共2页
Exploration Engineering(Drilling & Tunneling)
基金
地矿部"八五"科技攻关项目
关键词
贯通式冲击器
水力反循环
连续取心
取心钻进
central hollow DTH hammer, hydraulic reverse circulation, con coring, blockage release
