Metal working – Method of mechanical manufacture – With testing or indicating
Reexamination Certificate
2011-01-25
2011-01-25
Cozart, Jermie E (Department: 3726)
Metal working
Method of mechanical manufacture
With testing or indicating
C029S407050, C029S407090, C285S093000, C138S104000
Reexamination Certificate
active
07874054
ABSTRACT:
A method for producing a tubular component, in which, after machining successively respective threaded elements at both ends of the tubular component, a second orientation gauge is screwed onto the second threaded element to check whether a mark on the gauge comes into alignment with an orientation mark that has been drawn on the component, after the first element has been machined and a first orientation gauge has been screwed onto the first element in axial alignment with a mark provided on this gauge. If not, the machining of the second element is repeated with parameters varied accordingly. Such a method may find particular application to the drilling and operation of hydrocarbon wells.
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Coulon Jean-Luc
Micmande Jean-Claude
Cozart Jermie E
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Vallourec Mannesmann Oil & Gas France
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