Aqueous viscoelastic fluid

Details Aqueous viscoelastic fluid Aqueous viscoelastic fluid

C - Chemistry, Metallurgy

09

K

C09K 8/68 (2006.01) C09K 8/70 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2434345

The invention concerns an aqueous viscoelastic fluid for use in the recovery of hydrocarbons. According to the invention this fluid comprises a first viscoelastic surfactant and a second surfactant able to decompose under downhole conditions to release a compound itself able to reduce the viscosity of the aqueous viscoelastic fluid.

L'invention porte sur un fluide viscoélastique aqueux destiné à être utilisé dans la récupération d'hydrocarbures. Selon cette invention, ce fluide comprend un premier tensioactif viscoélastique et un second tensioactif capable de se décomposer dans des conditions de fond de trou afin de libérer un composé lui-même capable de réduire la viscosité du fluide viscoélastique aqueux.

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