Viscoelastic surfactants and methods of making and using same

Details Viscoelastic surfactants and methods of making and using same Viscoelastic surfactants and methods of making and using same

C - Chemistry, Metallurgy

09

K

C09K 8/035 (2006.01) C09K 8/40 (2006.01) C09K 8/42 (2006.01) C09K 8/60 (2006.01) C09K 8/68 (2006.01) E21B 43/04 (2006.01)

Patent

CA 2757103

A method of servicing a wellbore comprising placing downhole a composition comprising a surfactant package comprising a cationic surfactant and anionic surfactant, wherein the surfactant package when contacted with an aqueous solution forms a viscosified composition in the presence of less than about 30 wt.% of a hydrotrope.

L'invention porte sur un procédé d'entretien d'un puits de forage comprenant la mise en place en fond de trou d'une composition comprenant un système d'agents tensio-actifs comprenant un agent tensio-actif cationique et un agent tensio-actif anionique, le système d'agents tensio-actifs lorsqu'il est mis en contact avec une solution aqueuse formant une composition viscosifiée en présence de moins d'environ 30 % en poids d'un hydrotrope.

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