Methods of cementing subterranean zones

Details Methods of cementing subterranean zones Methods of cementing subterranean zones

C - Chemistry, Metallurgy

09

K

C09K 8/473 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2347348

Improved methods of cementing in a subterranean zone penetrated by a well bore are provided. The methods are basically comprised of the steps of preparing a foamed cement composition comprised of hydraulic cement, a non-dispersing set retarder, sufficient water to form a slurry, sufficient gas to foam the slurry and a foaming and foam stabilizing surfactant mixture present in an amount sufficient to facilitate the formation of the foam and stabilize the foamed cement composition.

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