E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 23/00 (2006.01) E21B 47/022 (2006.01) E21B 47/09 (2006.01) G01V 3/08 (2006.01) G01V 3/18 (2006.01) H01F 13/00 (2006.01)
Patent
CA 2394867
In the method of providing for well tubular member magnetization, the steps include providing a magnetizing structure comprising an electrical coil defining an axis, relatively displacing the member and the structure, with the coil positioned and guided in close, centered proximity to the member, while supplying electric current to flow in the coil, thereby creating magnetic flux passage through the member and core to magnetize the member, or a part of the member, and displacing the member in a wellbore.
L'invention concerne un procédé de magnétisation des éléments tubulaires (12) dans les puits de forage, lequel comprend les étapes consistant à fournir une structure de magnétisation (40) comprenant une bobine électrique (43) définissant un axe, à déplacer relativement l'élément (12) et la structure (40), la bobine étant positionnée et guidée à proximité immédiate centrée de l'élément (12), tout en fournissant du courant électrique qui puisse circuler dans la bobine (43), engendrant ainsi le passage d'un flux magnétique à travers l'élément (12) et la structure (40) afin de magnétiser l'élément (12) ou partie de l'élément (13), et à déplacer l'élément (12) dans le puits de forage (11).
Towle James N.
Van Steenwyk Donald H.
Scientific Drilling International
Smart & Biggar
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