C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/035 (2006.01)
Patent
CA 2542853
The invention relates to the use of surfactant mixtures in drilling fluids, said mixtures produced by reacting an aqueous solution consisting of at least one alkyl oligoglycoside and/or alkenyl oligoglycoside with an omega haloacid, or its salt or ester in the presence of an alkali. Preferably, the mixtures are suitable for use as emulsifiers for invert drilling-fluid systems and improve the filtration characteristics of said systems.
L'invention concerne l'utilisation de mélanges de tensioactifs dans des fluides de forage, ces mélanges étant produits par réaction d'une solution aqueuse comprenant au moins un alkyloligoglycoside et/ou un alcényloligoglycoside avec un acide .omega.-halogénocarboxylique, ou le sel ou l'ester de celui-ci, en présence d'alcali. Ces mélanges peuvent être utilisés de préférence comme émulsifiants pour des systèmes de fluides de forage inverses et améliorent les propriétés de filtration desdits systèmes.
Behler Ansgar
Hartmann Jens
Herzog Nadja
Mueller Heinz
Cognis Ip Management Gmbh
Cognis Oleochemicals Gmbh
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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