Short wellhead plug

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/12 (2006.01) E21B 23/02 (2006.01) E21B 33/03 (2006.01)

Patent

CA 2144023

A wellhead plug assembly having one or more plugs for plugging segments of a wellhead bore through which access during completion and production procedures is gained. Each plug has a shortened length that is achieved by positioning connections between several of the components of the plug assembly radially beneath the anchoring and sealing means. By placing the connections radially inward to, and in tandem with, the sealing and or anchoring means, the overall length of a given plug may be shortened to less than eleven inches for plugs to be used in conduits having internal diameters greater than one and one-half inch. Furthermore, the tandem orientation allows plug designs in which a majority of the overall longitudinal length of the plug comprises the collective longitudinal lengths of the seal and anchor means.

Dispositif à bouchons pour tête de puits comportant un ou plusieurs bouchons servant à obturer des segments d'un trou de tête de puits permettant l'accès pendant les travaux de complétion et d'exploitation. Chaque bouchon possède une longueur réduite qui est obtenue en plaçant radialement des raccords entre plusieurs des composants du dispositif à bouchons sous le dispositif d'ancrage et d'étanchéité. En plaçant les raccords de manière radiale vers l'intérieur du dispositif d'étanchéité ou d'ancrage et en tandem avec lui, la longueur totale d'un bouchon peut être ramenée à moins de 11 pouces dans le cas de bouchons devant être utilisés dans des conduits dont le diamètre intérieur dépasse un pouce et demi. De plus, l'orientation en tandem permet de réaliser des modèles de bouchons où la plus grand partie de la longueur totale comprend les longueurs communes du dispositif d'étanchéité et d'ancrage.

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