Methods and compositions for reducing fluid loss during...

Details Methods and compositions for reducing fluid loss during... Methods and compositions for reducing fluid loss during...

C - Chemistry, Metallurgy

09

K

C09K 8/62 (2006.01) C09K 8/035 (2006.01) C09K 8/42 (2006.01) C09K 8/487 (2006.01) C09K 8/56 (2006.01) C09K 8/76 (2006.01) E21B 33/13 (2006.01) E21B 43/04 (2006.01) E21B 43/25 (2006.01)

Patent

CA 2645938

Methods and compositions of treating formations using viscoelastic treatment fluids are provided that reduce the amount of fluid loss to the formations due to the lack of polymer backbone in the viscoelastic treatment fluids. The methods and compositions of treating formations include a fluid loss additive that includes a copolymer that includes a hydrophilic monomeric unit and a first anchoring monomeric unit.

Des méthodes et des compositions pour traiter des formations à l'aide de fluides de traitement viscoélastiques sont présentées; elles réduisent la quantité de perte liquidienne dans les formations à cause de l'absence de squelette de polymère dans les fluides de traitement viscoélastiques. Les méthodes et les compositions pour traiter les formations incluent un additif pour la perte liquidienne qui renferme un copolymère comprenant une unité monomère hydrophile et une première unité monomère d'ancrage.

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