Friction and tightening force of conical threaded
2003
In this study the friction behaviour of conical threaded connections was investigated in various conditions by performing full scale make up tests. A new procedure for friction condition evaluation in threaded joints is proposed. Several make up/break out (M/B) tests were carried out and the behaviour of the threaded connections at different make up speeds was investigated; the results were summarised and organised through the use of probability charts. All the results of the tests provide the user with a procedure, based on a large data spectrum, that enables the evaluation of whether or not to reject a connection before inserting it in the perforation drillstring.
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