E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/12 (2006.01) E21B 33/128 (2006.01)
Patent
CA 2421500
Annular packer (2) arranged on the outside of a production tubing (4) said packer comprises a core (12) comprising elastic polymer swelling by absorption of hydrocarbons. The core (12) may be surrounded by an external mantle of rubber (10), which is permeable to hydrocarbons and may be equipped with a reinforcement (11). The core (12) swells by absorption of hydrocarbons and the packer (2) expands thus in order to seal the annular space (5) between the production tubeing (4) and the well wall (6).
On installe, dans le cadre de cette invention, un anneau de garnissage (2) à l'extérieur d'une colonne de production (4). Cet élément de garnissage est constitué d'un noyau (12), composé d'un polymère élastique se gonflant par absorption d'hydrocarbures. Ce noyau (12) peut être enveloppé d'un manchon extérieur en caoutchouc (10), perméable aux hydrocarbures et pouvant être pourvu d'éléments de renfort (11). Le noyau (12) se gonfle du fait de l'absorption des hydrocarbures et l'élément de garnissage (2) se dilate, obturant hermétiquement, de ce fait, l'espace annulaire (5) existant entre la colonne de production (4) et la paroi du puits (6).
Freyer Rune
Halliburton Energy Services Inc.
Ridout & Maybee Llp
LandOfFree
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