Microemulsifiers and methods of making and using same

Details Microemulsifiers and methods of making and using same Microemulsifiers and methods of making and using same

C - Chemistry, Metallurgy

09

K

C09K 8/32 (2006.01) C09K 8/36 (2006.01) C09K 8/524 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2737870

A method comprising contacting a zwitterionic surfactant, co-surfactant, and water to form a microemulsifier, and contacting the microemulsifier with an oleaginous fluid under low shear conditions to form a microemulsion. A method comprising introducing a first wellbore servicing fluid comprising at least one oleaginous fluid into a wellbore, wherein the first wellbore servicing fluid forms oil-wet solids and/or oil-wet surfaces in the wellbore, and contacting the oil-wet solids and/or oil-wet surfaces in the wellbore with a second wellbore servicing fluid comprising a zwitterionic surfactant, a co-surfactant, and a brine to form a microemulsion.

L'invention concerne un procédé qui comprend les étapes consistant à: mettre en contact un tensioactif zwitterionique, un co-tensioactif et de l'eau afin de former un micro-émulsionnant, et mettre en contact le micro-émulsionnant avec un fluide oléagineux dans des conditions de cisaillement faible pour former une micro-émulsion. L'invention concerne un procédé qui comprend les étapes consistant à: introduire dans un trou de forage un premier fluide d'entretien de trou de forage comprenant au moins un fluide oléagineux, ledit premier fluide d'entretien de trou de forage formant des solides et/ou des surfaces mouillées par l'huile dans le trou de forage, et mettre en contact les solides et/ou surfaces mouillées par l'huile dans le trou de forage avec un deuxième fluide d'entretien de trou de forage comprenant un tensioactif zwitterionique, un co-tensioactif et une saumure afin de former une micro-émulsion.

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