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Torque Bias Thread - Oilfield Application

Torque Bias Thread - Oilfield Application

Torque Bias Thread - Oilfield Application

(OP)
Suppose an inclined thread for use in an oilfield tubing application is torqued to 20 ft kip, right hand.  I need to get off of this connection at a maximum of one-third that value, left hand.  Obviously it is not possible using a simple box & pin connection.  Is there another way to do this?  Has anyone understand how "Canfish" works, is it just a simple serated plate at the mating shoulders of the connection?

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

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