Use of surface-active alpha-sulfo-fatty acid di-salts in...

Details Use of surface-active alpha-sulfo-fatty acid di-salts in... Use of surface-active alpha-sulfo-fatty acid di-salts in...

C - Chemistry, Metallurgy

09

K

C09K 8/36 (2006.01) B01F 17/00 (2006.01) C09K 8/26 (2006.01) C09K 7/06 (1990.01) C09K 7/02 (1990.01)

Patent

CA 2092114

Described is the use of surface-active alpha-sulfo- fatty acid di-salts as ecologically compatible emulsi- fiers of the W/o type and O/W type, respectively, in fluid and pumpable drilling fluids and other fluid drilling-hole treatment agents which comprise a con- tinuous or a dispersed oil phase together with an aqueous phase and which are suitable for an environment- ally acceptable exploitation of geological resources, for example oil or natural gas deposits. The invention further relates to inverted drilling fluids based on a continuous oil phase and, present therein, a dispersed aqueous phase which, in addition to the emulsifiers, contain further conventional auxiliary agents such as thickeners, fluid-loss additives, weighting agents, water-soluble salts and/or alkali reserves. The inverted drilling fluids according to the invention are characterized in that they contain surface-active di-salts of the type indicated as emulsifier or as an emulsifier component together with an ecologically compatible continuous oil phase.

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