E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/04 (2006.01) E21B 17/10 (2006.01) E21B 17/22 (2006.01)
Patent
CA 2712670
The invention relates to a member (6) of a drill packer (1) that comprises at least one area (12) bearing on the wall of the drill hole, the bearing area (12) being provided with at least one bearing segment (14) having an outer diameter larger than the diameter of the other portions of the member, and two activation areas (10, 16) substantially adjacent to the bearing area (12) and arranged upstream and downstream from the bearing area (12), wherein said activation areas (10, 16) include a plurality of grooves (11, 17) having a generally helical shape about the axis (2) of said member, the bearing area (12) including two guiding segments (13, 15) having a convex rounded revolution shape and arranged upstream and downstream from the bearing segment (14), adjacent to said bearing segment (14), and tangential to said bearing segment (14) and to the activation areas (10, 16).
Elément (6) de garniture (1) de forage comprenant au moins une zone d'appui (12) sur la paroi de trou de forage, la zone d'appui (12) étant pourvue d'au moins un tronçon d'appui (14) de diamètre extérieur supérieur au diamètre des autres parties de l'élément, et deux zones d'activation (10, 16) sensiblement adjacentes à la zone d'appui (12) et disposées en amont et en aval de la zone d'appui (12), lesdites zones d'activation (10, 16) comprenant une pluralité de rainures (11, 17) de forme générale hélicoïdale autour de l'axe (2) dudit élément, la zone d'appui (12) comprenant deux tronçons de guidage (13, 15) de forme de révolution arrondie convexe, disposés en amont et en aval du tronçon d'appui (14), de façon adjacente au tronçon d'appui (14), et tangents au tronçon d'appui (14) et aux zones d'activation (10, 16).
Goudreau Gage Dubuc
Vam Drilling France
LandOfFree
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