Expansive admixture

Details Expansive admixture Expansive admixture

C - Chemistry, Metallurgy

09

K

31/12

C09K 8/46 (2006.01) C04B 28/02 (2006.01)

Patent

CA 1158427

ABSTRACT OF THE DISCLOSURE An expansive admixture is shown of the type used in cementing oil and gas well bores. Aluminum particles are coated with a gasoline and water insoluble wood resin. The resin coated aluminum particles in combination with acti- vated charcoal and a fluid loss additive provide controlled expansion of the slurry over an extended period of time with- out detracting from other desirable properties of the slurry.

383748

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