Re-drill the bottom of the King pins.
再钻针底部的国王。
The reaming drill bit in slim hole is a key tools of re-drilling in existing well.
小井眼扩孔钻头是老井重钻的关键设备。
Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.
给大钳装上与钻杆接头或钻铤相匹配的钳头,再装上安全锁簧。
Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.
给大钳装上与钻杆接头或钻铤相匹配的钳头,再装上安全锁簧。
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