Packer and method for fixation thereof in a well

Details Packer and method for fixation thereof in a well Packer and method for fixation thereof in a well

E - Fixed Constructions

21

B

E21B 33/12 (2006.01) E21B 33/127 (2006.01) E21B 33/134 (2006.01) E21B 36/04 (2006.01)

Patent

CA 2383978

The invention relates to the oil industry and can be used for increasing well productivity by increasing the oil flowrate, for a well workover and isolation of a water-encroached bench. The inventive packer (1) comprises a body (4) provided with a sealing ring (5) which is collapsible in a radial direction and fitted with a drive. Said drive is embodied in the form of a chamber (6) containing a working medium in an such initial aggregative state in which it occupies a minimum volume, and comprises an element transferring the working medium from the initial state to another state. In order to fix the packer (1) in the well, the working medium of the drive of the sealing ring is transferred from the initial aggregative state to another state, where the working medium occupies a greater volume.

L'invention concerne l'industrie pétrolière et sert à augmenter la productivité des puits par l'intensification des flux de pétrole, à effectuer la révision générale des puits et à déconnecter les formations pétrolifères inondées. Le packer (1) comprend un corps (4) avec une bague d'étanchéité (5) munie d'un entraînement. L'entraînement se présente comme une chambre (6) avec un milieu actif se trouvant dans un état initial dans lequel il occupe un volume minimal et contient un élément et fait passer ledit milieu actif d'un état de départ à un autre. A des fins de fixation du packer (1) à l'intérieur du puits, on fait passer le fluide actif de l'entraînement de la bague d'étanchéité (5) de l'état initial à un autre état dans lequel ce milieu actif occupe un volume plus important.

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