Method for detecting wear at connections between pin and box joi

Details Method for detecting wear at connections between pin and box joi Method for detecting wear at connections between pin and box joi

1998-09-24

2000-01-04

Young, Lee W.

Metal working

Method of mechanical manufacture

With testing or indicating

29456, 285 93, 285333, B21D 3900, F16L 3500

Patent

active

06009611&

ABSTRACT:
A method of detecting thread wear for drill pipe and drill casing that are connectable end-to-end at threaded joint connections includes the providing of a pair of pipe joints to be joined coming each having end portions with threads that engage upon assembly. A projection is place on a first of the pipe joints near the joint end portion, the projection facing a second pipe joint during assembly of the pair of pipe joints. The joints are connected together and observed after assembly to determine weather or not the projection has become mechanically deformed or has scratched the surface of the opposing joint to thereby indicating worn condition of the threads.

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