E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/10 (2006.01) E21B 17/22 (2006.01)
Patent
CA 2257523
A centralizes (1) comprises two annular bands (2, 3) which are spaced apart by a plurality of members (4, 5, 6) extending therebetween. The members (4, 5, 6) are inclined to the longitudinal axis of the centralizer by an angle a of typically 30° to 45°.
Centreur (1) comportant deux colliers en forme d'anneau (2, 3) qui sont tenus écartés par une série de montants (4, 5, 6) s'étendant entre lesdits colliers. Les montants (4, 5, 6) sont inclinés dans le sens longitudinal par rapport à l'axe du centreur selon un angle alpha généralement compris entre 30 DEG et 45 DEG .
Lorenz Jorg
Reinholdt Bernd
Stokka Arnold
Marks & Clerk
Weatherford/lamb Inc.
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