| abstract |
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. |