Emulsifiers for drilling fluids

Details Emulsifiers for drilling fluids Emulsifiers for drilling fluids

C - Chemistry, Metallurgy

09

K

C09K 8/08 (2006.01) B01F 17/00 (2006.01)

Patent

CA 2542852

The invention relates to the use of surfactant mixtures containing alkyl oligoglycosides and alkenyl oligoglycosides (APG) of formula (I), RO-[G]p, in which R represents an alkyl and/or alkenyl radical comprising between 4 and 22 carbon atoms, G represents a sugar radical comprising 5 or 6 carbon atoms and p represents numbers from 1 to 10, mixed with free fatty acids comprising between 6 and 22 C atoms. Preferably, said mixtures are suitable for use as emulsifiers for invert drilling-fluid systems.

L'invention concerne l'utilisation de mélanges de tensioactifs contenant des alkyloligoglycosides et des alcényloligoglycosides (APG) de formule (I) RO-[G]p, dans laquelle R représente un groupe alkyle et/ou un groupe alcényle comportant 4 à 22 atomes de carbone, G représente un groupe sucre comportant 5 ou 6 atomes de carbone et p représente un nombre compris entre 1 et 10, ainsi que des acides gras libres contenant 6 à 22 atomes de carbone. Ces mélanges peuvent être utilisés de préférence comme émulsifiants pour des systèmes de fluides de forage inverses.

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