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US 11,598,187 B1Granted
Membrane-based systems and methods for increasing the mass transfer rate of dissolved gases
AssigneeSaudi Arabian Oil Company
InventorsZeyad Tareq Ahmed, Serguey Viktorov Arkadakskiy, Noushad Kunnummal
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Abstract
This disclosure relates to membrane-based systems for transporting dissolved gases to a formation and methods for increasing a mass transfer rate of gases in a formation. The membrane-based system may include an aqueous injection well, a diffusion-based membrane, a gas, and an aqueous solution.
Claims19
A membrane-based system for transporting dissolved gases to a formation, said membrane-based system comprising:
- an aqueous solution injection well within the formation, comprising a casing and an open hole interval, wherein fluids within the aqueous solution injection well flow out of the aqueous solution injection well and flow into the formation through the open hole interval;
- a diffusion-based membrane comprising a gas side and a liquid side;
- a gas from a gas source, wherein the gas source is outside of the formation, a gas pump transports the gas into the gas side of the diffusion-based membrane and the gas is concentrated in the gas side of the diffusion-based membrane to form a concentrated gas;
- and
- an aqueous solution from an aqueous solution source, wherein a water pump transports the aqueous solution into the casing of the aqueous solution injection well, wherein the aqueous solution enters the liquid side of the diffusion-based membrane;
- wherein the concentrated gas flows out of the gas side of the diffusion-based membrane and flows into the liquid side of the diffusion-based membrane;
- the concentrated gas is dissolved in the aqueous solution to form a dissolved gas solution within the liquid side of the diffusion-based membrane;
- the dissolved gas solution flows out of the liquid side of the diffusion-based membrane and into the formation.
5 more elements
A method for increasing a mass transfer rate of a gas in a formation in a membrane-based system, the membrane-based system comprising:
- an aqueous solution injection well within the formation, the aqueous solution injection well comprising a casing capable of holding an aqueous solution and an open hole interval, wherein fluids within the aqueous solution injection well flow out of the aqueous solution injection well and flow into the formation through the open hole interval;
- a diffusion-based membrane comprising a gas side and a liquid side;
- a gas in the gas side of the diffusion-based membrane;
- the aqueous solution;
- and
- a gas return pipe from which insoluble and undissolved gases within the gas side of the diffusion-based membrane are transported to the atmosphere outside of the aqueous solution injection well;
- the method comprising:
- dissolving the gas in the aqueous solution within the liquid side of the diffusion-based membrane, thereby forming a dissolved gas solution;
- transporting the dissolved gas solution in the liquid side of the diffusion-based membrane to the formation, wherein the dissolved gas solution reacts with minerals in the formation to form carbonates, sulfides, or a combination of these, thereby sequestering the gas in the formation;
- monitoring a composition of the undissolved gases transported out of the gas side of the diffusion-based membrane through the gas return pipe, or monitoring a composition of the aqueous solution within the formation, or a combination of these;
- and
- increasing a gas flow rate of the gas into the gas side of the diffusion-based membrane, increasing an aqueous solution flow rate of the aqueous solution into the aqueous solution injection well, or a combination of these, to increase a concentration of the gas that is sequestered in the formation, as determined by the monitoring of the undissolved gas transported from the gas side of the diffusion-based membrane through the gas return pipe;
- thereby increasing a mass transfer rate of the gas that is sequestered in the formation.
10 more elements
Dependencies are inferred from the claim text.