C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/30
C09K 8/26 (2006.01)
Patent
CA 1271320
A B S T R A C T DRILLING FLUID A drilling fluid comprising a stable oil in water emulsion consisting of a) 50-96 %v aqueous phase b) 3-40 %v oil phase c) 1-10 %v of at least one surfactant belonging to the class of a) ethoxylated amines; b) ethoxylated diamines; and c) quaternary ethoxylated ammonium salts.
552823
Shell Canada Limited
Smart & Biggar
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