C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
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
Dowell Schlumberger Canada Inc.
Smart & Biggar
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