Improved inflatable packers

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/127 (2006.01)

Patent

CA 2601718

Improved inflatable packers are provided. A packer may be constructed from hybrid structures including slat structures and weave structures. A packer may include a bladder and a cover, with a plurality of slats disposed therebetween, and/or a weave structure or anti- extrusion layer disposed therebetween. The slats may vary in width and thickness, and be provided with a plurality of reinforcement members. The reinforcement members may be longitudinally and/or transversely disposed in the slats. One or more of the various components of the packer preferably include a fiber, a wire, a cable, a nanofiber, a nanotube, and/or a nanoparticle modified elastomer. Anchors may be attached to or embedded in the outer cover. The packer may include a carcass having an end coupling including a plurality of slats. Improved packer cups are also disclosed, and preferably include a body member reinforced with a nanotube or similar material.

L'invention porte sur des garnitures d'étanchéité gonflables améliorées. Une telle garniture peut présenter une structure hybride comprenant des structures de lattes et des structures d'armures et comporter une vessie et une couverture et des lattes disposées entre elles et/ou une structure d'armure ou une couche anti-extrusion disposée entre elles. Les lattes peuvent varier en largeur et en épaisseur et être munies de renforts longitudinaux ou transversaux. Un ou plusieurs des différents composants de la garniture comporte de préférence des fibres, des câbles, des nanofibres, des nanotubes ou un élastomère modifié par des nanoparticules. Des ancrages peuvent être fixés à la couverture extérieure ou y être enfouis. La garniture peut en outre comporter une carcasse munie d'un couplage d'extrémité à plusieurs lattes. L'invention porte également sur des fonds de garnitures d'étanchéité dont le corps est renforcé par des nanotubes ou un matériau similaire.

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