Visco-elastic surfactant spacers

Details Visco-elastic surfactant spacers Visco-elastic surfactant spacers

C - Chemistry, Metallurgy

09

K

C09K 8/40 (2006.01) C09K 8/42 (2006.01)

Patent

CA 2710444

A spacer for use in an oil well cementing operation comprises an aqueous solution of a visco-elastic surfactant. A method of treating a well in a cementing operation, comprises pumping the spacer into a well ahead of a cement slurry for cementing the well.

La présente invention concerne un espaceur destiné à être utilisé dans une opération de cimentation d'un puits de pétrole comprenant une solution aqueuse d'un tensio-actif visco-élastique. La présente invention concerne également un procédé de traitement d'un puits lors d'une opération de cimentation, comprenant l'étape consistant à pomper l'espaceur à l'intérieur d'un puits, à l'avant d'une boue de ciment destinée à cimenter le puits.

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