How to Prevent Non-magnetic Drill Collars Fracture?

Application of non-magnetic drill collars played a very important role, especially in the oil drilling industry, it played a crucial role, but in the use of non-magnetic drill collars, sometimes it occurs fracture phenomenon, what reasons can cause fracture? How to prevent non-magnetic drill collars fracture?

Through a series of practical application, we can get the conclusion. The biggest reason of non-magnetic drill collars fracture is fatigue fracture, since the non-magnetic drill collars actual drilling pressure is greater than the critical pressure bent, non-magnetic drill collars will bend, if drill collar and drill bit does not match, or drilling speed is too large, which will accelerate fatigue crack initiation and propagation, resulting in breakage of the drill collar. The user increases the outer diameter of the drill collar, appropriately reduce the drilling pressure and speed, also note that the non-magnetic drill collars for testing, these can prevent fatigue failure.