Pumpable geopolymer formulation and application for carbon...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 8/42 (2006.01) C04B 22/00 (2006.01) C04B 28/00 (2006.01) C09K 8/467 (2006.01)

Patent

CA 2660225

The invention provides geopolymeric compositions intended for use in carbon dioxide injection or production wells or storage reservoirs and preferably in a supercritical carbon dioxide conditions. The geopolymeric composition is formed from a suspension comprising an aluminosilicate source, a carrier fluid, an activator taken from the list constituted by: a metal silicate, a metal aluminate, an alkali activator, or a combination thereof, and a retarder able to retard the thickening and/or the setting times of the suspension and/or an accelerator able to accelerate the thickening and/or the setting times of the suspension, wherein the metal is an alkali metal and the oxide molar ratio M2O/SiO2 is greater than 0.20 wherein M is the metal.

L'invention concerne des compositions géopolymériques prévues pour être utilisées dans des puits d'injection ou de production de dioxyde de carbone ou des réservoirs de stockage, et de préférence dans des conditions de dioxyde de carbone supercritiques. La composition géopolymérique est formée à partir d'une suspension comprenant une source d'aluminosilicate, un fluide porteur, un activateur pris dans la liste constituée par : un silicate de métal, un aluminate de métal, un activateur alcalin ou une combinaison de ceux-ci, et un retardateur pouvant retarder le temps d'épaississement et/ou de prise de la suspension et/ou un accélérateur pouvant accélérer le temps d'épaississement et/ou de prise de la suspension, le métal étant un métal alcalin, et le rapport molaire d'oxydes M2O/SiO2 O2 est supérieur à 2, M étant le métal.

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