Milling system and method in a wellbore

Details Milling system and method in a wellbore Milling system and method in a wellbore

E - Fixed Constructions

21

B

E21B 29/06 (2006.01)

Patent

CA 2319260

A system for lowering at least one member into a wellbore, said system comprising a mill (10; 60; 60a; 100) and at least one member (40; 67; 80; 107) supported therefrom, characterised in that one of said mill (10; 60; 60a; 100) and said at least one member (40; 67; 80; 107) is provided with a shoulder (44; 69; 74a; 104) and the other of said mill (10; 60; 60a; 100) and at least one member (40; 67; 80; 107) is provided with a hook (22; 65; 81; 108), the arrangement being such that, in use, said shoulder (44; 69; 74a; 104) and hook (22; 65; 81; 108) engage to inhibit separation of said mill (10; 60; 60a; 100) and said at least one member (40; 67; 80; 107).

L'invention porte sur un système servant à descendre au moins un élément dans un puits, et comportant une fraise (10, 60, 60a, 100) et un élément (40, 67, 80, 107) au moins s'y accrochant. De la fraise (10, 60, 60a, 100) ou de l'élément (40, 67, 80, 107), l'un est muni d'un épaulement, et l'autre, d'un crochet (22, 65, 81, 108), le dispositif étant tel qu'en exploitation ledit épaulement (44, 69, 74a, 104) et ledit crochet (22, 65, 81, 108) s'engagent l'un dans l'autre pour empêcher ladite fraise (10, 60, 60a, 100) et ledit élément (40, 67, 80, 107) de se désolidariser.

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