Inflatable packing element

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/127 (2006.01) E21B 33/12 (2006.01) E21B 33/1295 (2006.01)

Patent

CA 2473522

An inflatable packing element for a bridge plug. The packing element has an anchor portion and a sealing cover portion, each of which is expanded in order to engage and seal a surrounding string of casing or borehole. The anchor portion has a minimum length defined by 2.63 x the inner diameter of the surrounding pipe or other wellbore opening. At the same time, the anchor portion has a maximum length defined by approximately 49% of the length of the expanded portion of the packing element engaging the surrounding pipe or other wellbore opening.

L'invention concerne un élément d'emballage gonflable pour un bouchon provisoire. L'élément d'emballage présente une partie d'ancrage et une partie de couverture d'étanchéité, chacune se gonflant de manière à épouser et rendre étanche une rame environnante de tubage ou de forage. La partie d'ancrage présente une longueur minimale définie par 2,63 x le diamètre interne du tuyau ou d'une autre ouverture de puits environnant. En même temps, la partie d'ancrage présente une longueur maximale définie par environ 45 % de la longueur de la partie étendue de l'élément d'emballage épousant le tuyau ou l'ouverture de puits de forage environnant.

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