E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/129 (2006.01) E21B 23/01 (2006.01)
Patent
CA 2177762
A downhole anchor for preventing rotational movement of a member within a well is taught. The anchor has a central tubular member and a slip housing and a drag assembly disposed about the tubular member. The slip housing carries at least two slip members, the slip members each being rotatable about an axis substantially parallel to the central axis of the tubular member between a retracted position, against the housing, and an extended position. The drag assembly is mounted on and rotatable about the tubular member and carries drag means. An actuator drives the rotation of the slip member in response to the rotation of the tubular member within the drag assembly.
Une ancre fond de trou destinée à empêcher la rotation d'un élément dans un puits est divulgué. L'ancre comporte un élément tubulaire central et un logement coulissant ainsi qu'un ensemble traînant disposé autour de l'élément tubulaire. Le logement coulissant porte au moins deux éléments coulissants, les éléments coulissants pouvant tous deux tourner autour d'un axe essentiellement parallèle à l'axe central de l'élément tubulaire entre une position effacée et une position sortie. L'ensemble traînant rotatif est monté sur l'élément coulissant et porte des moyens traînants. Un actionneur commande la rotation de l'élément coulissant en réaction à la rotation de l'élément tubulaire à l'intérieur de l'ensemble traînant.
Aldridge Colin A.
Caldwell Roseann B.
LandOfFree
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