In the construction process of oil and gas drilling, the joint drill wear, eccentric wear and threaded partial adhesion caused drilling damage and then evolved into the major mine accidents.
At the same time the joint drill wear also easily lead to shortening the life cycle of drilling and even early retirement.
同时由于钻具接头超磨，也容易造成钻具使用周期缩短甚至提前报废。
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This article proves that rolling operation can largely enhance fatigue strength through the research on the cold rolling operation of thread root of the drilling tool joint.