C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 24/24 (2006.01) C04B 24/16 (2006.01) C04B 28/02 (2006.01) C09K 8/16 (2006.01) E21B 33/13 (2006.01)
Patent
CA 2258363
A method and a drilling fluid/cement slurry composition for cementing a wellbore. The drilling fluid/cement slurry composition comprises a cement slurry composition comprising: a) a cementitious material; b) a drilling fluid; and c) a dispersant selected from the group consisting of water soluble polymers comprising allyloxybenzene sulfonate or allyloxybenzene phosphonate polymerized with at least one of acrylic acid, acrylamides, alkyl acrylamides, maleic anhydride, itaconic acid, sulfonated or phosphonated styrene sulfonated or phosphonated vinyl toluene, sulfonated or phosphonated isobutylene, acrylamidopropane sulfonate, acrylamidopropanephosphonate, vinyl alcohol, sulfonated or phosphonated propene and alkali, alkaline earth and ammonium salts thereof.
L'invention concerne un procédé et une composition à base de boue de forage/lait de ciment pour la cimentation d'un forage. La composition à base de boue de forage/laid de ciment comprend: a) un matériau cimentaire; b) une boue de forage; et c) un agent dispersant sélectionné dans le groupe constitué de polymères solubles dans l'eau comprenant de l'allyloxybenzène sulfonate ou de l'allyloxybenzène phosphonate polymérisé avec au moins un des éléments suivants: acide acrylique, acrylamides, alkylacrylamides, anhydride maléique, acide itaconique, styrolène sulfoné ou phosphoné, toluène vinylique sulfoné ou phosphoné, isobutylène sulfoné ou phosphoné, acrylamidopropane sulfonate, acrylamidopropane phosphonate, alcool vinylique, propylène et alcali sulfonés ou phosphonés, alcalinoterreux et leurs sels d'ammonium.
Carpenter Robert
Johnson David
Atlantic Richfield Company
Swabey Ogilvy Renault
LandOfFree
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