Lightweight cement slurry and method of use

C - Chemistry – Metallurgy – 04 – B

Patent

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31/14, 261/46

C04B 38/00 (2006.01) C04B 28/14 (2006.01) E21B 33/14 (2006.01)

Patent

CA 1210413

ABSTRACT OF THE DISCLOSURE A foamed, thixotropic hydraulic cement slurry and method of using same in cementing sub- terranean voids. This lightweight cement slurry is particularly useful for cementing in oil or gas wellbores penetrating a weak underground forma- tion which will be broken by cement slurries of ordinary density. ?

432611

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