Foamed cement compositions comprising oil-swellable...

C - Chemistry – Metallurgy – 09 – K

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C09K 8/473 (2006.01) C04B 28/02 (2006.01) C04B 28/24 (2006.01) C09K 8/487 (2006.01)

Patent

CA 2741491

Of the many compositions and methods provided herein, an embodiment of a method comprises introducing a foamed cement composition into a subterranean formation, wherein the foamed cement composition comprises: a cementitious component; a foaming and stabilizing surfactant; an oil-swellable particle; gas; and water; and allowing the settable composition to set in the subterranean formation. Another embodiment of a method comprises introducing a foamed cement composition into an annulus between a pipe string and a subterranean formation, wherein the foamed cement composition comprises comprising: a cementitious component; a foaming and stabilizing surfactant; an oil-swellable particle; gas; and water; and allowing the settable composition to set in the annulus. An embodiment of a foamed cement composition comprises a cementitious component, a foaming and stabilizing surfactant, a swellable particle, gas, and water.

La présente invention concerne plusieurs compositions et procédés, dont un mode de réalisation de procédé comprend lintroduction dune composition de ciment mousse dans une formation souterraine, la composition de ciment mousse comportant : un constituant cimentaire; un tensioactif gonflant et stabilisant; une particule gonflable dans le pétrole; du gaz; et de leau; le durcissement de la composition durcissable dans la formation souterraine. Un autre mode de réalisation du procédé comprend lintroduction dune composition de ciment alvéolaire dans un espace annulaire entre un train de tiges et une formation souterraine, la composition de ciment alvéolaire comportant : un constituant à base de ciment; un tensioactif gonflant et stabilisant; une particule gonflable dans le pétrole; du gaz; et de leau; et le durcissement de la composition durcissable dans lespace annulaire. Un mode de réalisation de composition de ciment alvéolaire comporte un constituant à base de ciment; un tensioactif gonflant et stabilisant; une particule gonflable par du pétrole; du gaz; et de leau.

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