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Keywords: relief featureClose
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE/IADC Drilling Conference, March 15–18, 1987
Paper Number: SPE-16072-MS
... FAILURES ANALYSIS and DISCUSSION Perhaps the most obvious characteristic of our drill collar failures is that 97% of the failures occured at the box end of the drill collars (see Table 1.). P. 177^ collar failure drill collar operation relief feature drill pipe selection inspection...
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