Failure analysis of a broken part of Model S-135 drill pipe is carried out to find out the actual factor causingunexpected fracture during tripping operation. The fracturing mechanism is expounded based on an analysis...
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Failure analysis of a broken part of Model S-135 drill pipe is carried out to find out the actual factor causingunexpected fracture during tripping operation. The fracturing mechanism is expounded based on an analysis of the fracturing surface of the drill pipe. The results show that drill pipe failure is caused by stress corrosion. Suggestions for preventing the drill pipe failure are put forward.
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