A method of cementing in a subterranean formation that comprises providing a foamed cement composition that comprises water, a cement, a gas, and an additive, the additive comprising an anionic foaming agent and at least one of an anionic foam stabilizer or a Zwitterionic foam booster; placing the cement composition into the subterranean formation; and allowing the cement composition to set therein is provided. Foamed cement compositions, additives for foaming and stabilizing a cement composition, and methods of reducing the density of a cement composition, also are provided.

 
Web www.patentalert.com

< Method for repairing steel-reinforced concrete structure

< Method for manufacturing paper and board

> Penetration fire stop device

> Method of modifying surface of material

~ 00247