Keywords bit;drill stem stabilizer;boost device;percussing drilling;downhole tool;coring tool;flexible drill pipe;directional well;horizontal well;America;China;

  • 钻头;钻柱稳定器;推进器;增压装置;冲击钻井;井下工具;取心工具;柔性钻杆;定向井;水平井;美国;中国;
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