E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/16 (2006.01)
Patent
CA 2318955
The apparatus of the present invention is a mechanism for use in cementing a casing string (10), a cement plug (28) engageable to the float collar (12), and a wiper plug (54) engageable to the cement plug, each element utilizing inclined plane J-slots (44) for engageability. When engaged, the J-slots disallow not only rotational movement between the elements, but also vertical movement between the elements.
L'appareil de la présente invention est un mécanisme qui s'utilise pour cimenter une colonne de tubage (10), un bouchon de ciment (28) qui s'emboîte dans l'anneau de retenue (12), et un bouchon de cimentation (54) qui s'emboîte dans le bouchon de ciment, chaque élément venant s'emboîter dans une fente en J (44) inclinée. Lorsque les éléments sont emboîtés dans les fentes en J, ces dernières empêchent tout mouvement rotatif ou vertical entre lesdits éléments.
Davis-Lynch Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
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