An arrangement for affixing an expandable packer in a hole

Details An arrangement for affixing an expandable packer in a hole An arrangement for affixing an expandable packer in a hole

E - Fixed Constructions

21

B

E21B 33/128 (2006.01)

Patent

CA 2571548

The present invention relates to an arrangement for affixing an expandable packer 22, 32 in a hole 30, wherein the arrangement includes a piston-and- cylinder device 11,12 with which the piston can be caused to move in the cylinder with the aid of a pressurized medium. Expansion of the packer is effected with the aid of the movement of the piston 11, by transferring the force generated by piston movement to an expandable part 24, 34 of the packer 22, 32 so that said part will expand. Expansion of the packer results in the packer being firmly affixed in the hole by means of friction. The arrangement also includes an elongate main body 1 that has a through-penetrating aperture extending in the longitudinal direction of the body. The main body 1 has a front end 3, which faces inwardly of the hole when fastening the packer and towards the packer. The body includes a rear end 4 which carries means 9 for connection to a filler supply means, wherewith filler is delivered to the hole via the through-penetrating aperture 2 and via the packer 22, 32 subsequent to having affixed the packer in the hole. At least a part of the main body 1 is formed as a piston rod 16 on which and along which the piston 11 can move. The arrangement also includes pressure connection means 10 for connection to said pressurized medium, and a connection 19 between said pressure connection means and the piston 11.

La présente invention concerne un dispositif permettant de fixer une garniture d'étanchéité dilatable (22, 32) dans un trou (30). Ce dispositif comprend un dispositif de type cylindre-piston (11,12) dans lequel un piston peut être déplacé à l'intérieur d'un cylindre à l'aide d'un moyen sous pression. La dilatation de la garniture s'obtient avec l'aide du déplacement du piston (11) en transférant la force générée par ce mouvement à une pièce dilatable (24, 34) de la garniture (22, 32) de telle sorte que la dite pièce se dilate. Sous l'effet de la dilatation, la garniture est solidement plaquée contre la paroi du trou. Le dispositif comprend également un corps principal de forme allongée (1) à ouverture traversante dans le sens longitudinal. Le corps principal (1) comprend une extrémité avant (3) tournée vers l'intérieur du trou et vers la garniture, pendant et après le montage. Son extrémité arrière (4) est munie d'un dispositif de raccordement (9) à un moyen d'alimentation en produit de remplissage, lequel produit est injecté par l'ouverture traversante (2) et la garniture (22, 32) une fois cette dernière fixée dans le trou. Au moins une partie du corps principal (1) fait office de tige de piston (16) sur laquelle coulisse le piston. Le dispositif comprend également un dispositif de raccordement sous pression (10) se branchant sur ledit moyen sous pression, et une connexion (19) entre ledit dispositif de raccordement sous pression et le piston (11).

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