What are the methods of repairing short joints in the drill pipe of water well drilling rigs?

There are more common methods, including:

First, spray repair. The method is relatively simple, that is, the use of a welding repair agent to deal with the fracture mouth, the broken short section butt joints, the use of rings and pliers to make it tight and firm together; subsequently, the use of welding machine to repair the fracture part, the weld will be completely jointed, and then the drill pipe will be cooled, and the repair is completed.

Second, is patch welding. For broken and has no less than three sections, you can use this method. That is, first find out the two broken parts, then use a hammer to deal with more uniform ends, use clamps to fasten up, and use a welding machine to implement welding repair, welding needs to be effectively closed, cooled, and then the use of cloth, ceramic glue wrapped up, after drying can continue to use.

Third, thread repair. If the damage is only the threaded part of the drill pipe, then you can use this method to repair it. Maintenance personnel to find out if the threaded part has been damaged, the edge of the grinding into a smooth plane, the use of suitable machining tools to make threads, and then use the ring for fixed processing, at this time the drill pipe can be put into use again.

In dealing with the water conservancy water well drilling rigs in the common short section of the drill pipe breakage fault, need to refer to the actual situation on the scene, to immediately stop drilling operations, to ensure safety, and will be the scene of debris and residual materials and other processing clean, to avoid secondary injury or failure, and then timely repair of the drill pipe, as soon as possible, to restore the normal operation of the drilling rig.

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