Abstract: An injection well bored in a mafic and/or ultramafic rock used for carbon dioxide sequestration and a method of cementing a CO2 injection well are described. The injection well may include a surface casing and an injection casing placed in a drilled borehole. The injection well may have an open interval permitting fluid communication f into the mafic and/or ultramafic rock. A cured cement may be present between the mafic and/or ultramafic rock and the injection casing and may be formed from a cementitious slurry mixture containing a class G cement, fly ash, microsilica, additives, and an epoxy resin blend. An injection tubing is disposed in the interior of the injection casing, having fluid communication with the interior of the injection casing. A packer connected to the injection tubing may be present as a fluid seal within the injection casing.

Abstract: A method of measuring a rate of mineralization, including: positioning a seismic sensor and/or a harmonic sensor in acoustic communication with a rock formation; injecting carbon dioxide into a borehole in the rock formation; reacting the carbon dioxide with the rock formation to form mineralized carbon dioxide; measuring an acoustic activity generated in the rock formation with the seismic sensor and/or harmonic sensor during the reacting; calculating the rate of mineralization based on the acoustic activity; and adjusting a rate of carbon dioxide injection into the rock formation based on the calculated rate of mineralization.

Abstract: An injection well bored in a mafic and/or ultramafic rock used for carbon dioxide sequestration and a method of cementing a CO2 injection well with a formulated cured. The injection well may include a surface casing and an injection casing placed in a drilled borehole. The injection well may have an open interval permitting fluid communication f into the mafic and/or ultramafic rock. A cured cement may be present between the mafic and/or ultramafic rock and the injection casing and may be formed from a cementitious slurry mixture containing a class G cement, fly ash, microsilica, additives, and an epoxy resin blend. An injection tubing is disposed in the interior of the injection casing, having fluid communication with the interior of the injection casing. A packer connected to the injection tubing may be present as a fluid seal within the injection casing.

Abstract: A method of measuring a rate of mineralization, including: positioning a seismic sensor and/or a harmonic sensor in acoustic communication with a rock formation; injecting carbon dioxide into a borehole in the rock formation; reacting the carbon dioxide with the rock formation to form mineralized carbon dioxide; measuring an acoustic activity generated in the rock formation with the seismic sensor and/or harmonic sensor during the reacting; calculating the rate of mineralization based on the acoustic activity; and adjusting a rate of carbon dioxide injection into the rock formation based on the calculated rate of mineralization.

Abstract: The present invention discloses a novel process for the mineralization of CO2 in mafic and ultramafic rocks or storage of CO2 in geological formations through the generation and use of nano-sized CO2 bubbles injected into a fluid-mixture.

Abstract: The present invention discloses a novel process for the mineralization of CO2 in mafic and ultramafic rocks or storage of CO2 in geological formations through the generation and use of nano-sized CO2 bubbles injected into a fluid-mixture.