How To Solve The Slipping Phenomenon Of Water Well Drilling Tools?

Abstract:  How to solve the slipping phenomenon of water well drilling tools? For this problem, first of all, we have to understa...

  How to solve the slipping phenomenon of water well drilling tools? For this problem, first of all, we have to understand why slippage occurs before we can think of a solution.

  Why does slippage occur:

  When skidding occurs, the dregs dropped by the water well drilling tools have lost the original integrity of the solid soil. After the second drilling, the tooth tips are directly inserted into the dregs, and the bottom surface of the drill bucket is directly pressed against the dregs. On the soil, as the drill bucket rotates and drills, the unevenness, and gaps of the dropped muck are completely compacted. When the muck cannot be compressed, the plane of the bottom plate is supported by the muck, and the bucket teeth are already drawn out. repeatedly rotates in the groove. At this time, three layers are formed. The first layer is the drill bucket that rotates repeatedly, the second layer is the dropped dregs: interlayer and the third layer is the uncut solid soil. Since the drill bucket matches the diameter of the hole, the drilling There is no resistance, no reaction force, no friction, and no pressure when the rod rotates. The bottom plate and the falling slag will slip under the lubrication of water or mud.

  How to prevent slippage:

  The phenomenon of bit slippage of engineering drilling rigs can be overcome, first of all, combined with the depth of footage of a single bucket on the display. Although the drilling resistance of the mud layer is small, as the slag inside the drill bucket increases, there will be resistance to the slag inlet, so the drilling resistance is increased, and the sound of the planetary reducer on the powerhead changes with the resistance, so listen to the sound of the powerhead. The amount of footage can be judged. When the drilling resistance increases, the rotational speed of the powerhead also decreases, so the amount of footage can also be judged by the rotational speed of the drill pipe. If the geological changes are not large, the drilling time and depth of each bucket should be kept within a certain range, and the footage depth of a single bucket in the mud layer should be within 0.5 to 0.6 meters. , at this time, the bucket bottom has a certain resistance, to prevent the bucket bottom from reversing together with the drill pipe.