Well cementing process and gasified cements useful therein

C - Chemistry – Metallurgy – 04 – B

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31/14, 166/17

C04B 22/12 (2006.01) C04B 22/00 (2006.01) C04B 22/02 (2006.01) C04B 28/02 (2006.01) C09K 8/42 (2006.01) C09K 8/46 (2006.01)

Patent

CA 1129633

ABSTRACT OF THE DISCLOSURE A process for cementing adjacent a subterranean gas- containing zone, in which process a cement slurry containing a stabilized, dispersed gas is placed adjacent the zone. Suf- ficient gas is present in the cement slurry or is capable of being generated within the slurry to present the connate for- mation gas under pressure from passing into or around the cement prior to the time the cement has set up.

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