Lightweight cement for high pressure applications

Details Lightweight cement for high pressure applications Lightweight cement for high pressure applications

C - Chemistry, Metallurgy

04

B

261/46

C04B 38/10 (2006.01) C04B 7/00 (2006.01) C04B 22/06 (2006.01) C04B 24/20 (2006.01) C04B 24/38 (2006.01) C04B 28/02 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2038303

PATENT C-56215 ABSTRACT OF THE DISCLOSURE A lightweight cement composition for use in high pressure environments (greater than 3000 psi) comprises an aqueous slurry of a hydratable cement, ceramic microspheres and a foaming surfactant. It has been found that the presence of the foaming surfactant synergistically overcomes the normal tendency of the ceramic microspheres to crush at a pressure than about 3000 psi.

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