C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/24 (2006.01) C09K 8/12 (2006.01)
Patent
CA 2263952
The invention concerns a water-based additive for well fluid, comprising an acrylamide and branched styrene sulphonate copolymer. It also concerns a water-based fluid comprising an acrylamide and branched styrene sulphonate copolymer. The additive is useful for controlling the filtering of a well fluid through the wall. The invention is advantageously applicable to drilling and/or completion of oil wells having a temperature higher than 120 ·C.
La présente invention concerne un additif pour fluide de puits à base d'eau, comportant un copolymère d'acrylamide et de styrène sulfonate ramifié. L'invention concerne également un fluide à base d'eau comportant un copolymère d'acrylamide et de styrène sulfonate ramifié. Application de l'additif pour contrôler la filtration d'un fluide de puits à travers la paroi. L'invention est avantageusement utilisée pour des opérations de forage et/ou de complétion des puits pétroliers ayant une température supérieure à 120 ~C.
Argillier Jean-Francois
Audibert-Hayet Annie
Rousseau Lionel
Institut Francais Du Petrole
Robic
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