E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 23/00 (2006.01) E21B 7/06 (2006.01) E21B 23/06 (2006.01) E21B 33/129 (2006.01)
Patent
CA 2195701
The invention relates to a slip design with substantially longitudinally oriented wickers, which can be used alone or in combination with transversely oriented wickers, to secure a downhole tool, such as a bridge plug or packer, against rotational forces, such as those imparted from a whipstock, as well as longitudinal forces, such as those ultimately delivered by pressure fluctuations from uphole or downhole. The longitudinally oriented wickers are further cammed against the casing since any imparted torque on the packer body contacts a corner or edge of the slip, imparting to it a camming action making it dig further into the casing surface.
Cette invention concerne un coin de retenue présentant des organes grippeurs essentiellement longitudinaux, éventuellement combinés avec d'autres organes grippeurs transversaux pour empêcher un outil, par exemple un bouchon de sondage ou une garniture d'étanchéité, d'être déplacé par des forces de rotation comme celles induites par un sifflet de déviation ou par des forces de translation comme celles causées par les fluctuations de pression en amont ou en aval. L'action des organes grippeurs longitudinaux est renforcée lorsqu'un couple est appliqué sur la garniture d'étanchéité, de fait que ce couple est transmis à un angle ou un bord du coin, faisant enfoncer le coin plus profondément dans la surface du tubage.
Baker Hughes Incorporated
Sim & Mcburney
LandOfFree
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