Method and composition for zonal isolation of a well

Details Method and composition for zonal isolation of a well Method and composition for zonal isolation of a well

E - Fixed Constructions

21

B

E21B 33/14 (2006.01) E21B 43/10 (2006.01) C09K 8/42 (2006.01)

Patent

CA 2682769

The invention provides a system comprising: a tubular containing a first surface comprising a coating made of a first swellable material coating said first surface, wherein said coating has a second surface and said first swellable material is able to swell in contact with a first fluid on said second surface; and a composition made of a settable material and a second swellable material able to swell in contact with a second fluid. The invention also discloses the method associated with the use of such a system.

L'invention concerne un système comprenant : un élément tubulaire comprenant une première surface dont le revêtement est constitué d'un premier matériau capable de gonfler recouvrant ladite première surface. Ledit revêtement présente une seconde surface et ledit premier matériau capable de gonfler est susceptible de gonfler lorsqu'il est en contact avec un premier liquide sur ladite seconde surface ; et une composition constituée d'un matériau durcissable et d'un second matériau capable de gonfler, susceptible de gonfler lorsqu'il est en contact avec un second liquide. L'invention concerne également le procédé associé avec l'utilisation d'un tel système.

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