Paper on the CarbFix injection method

18.05.2016

The CarbFix team recently published a paper on the dissolved CO2 injection system developed within the CarbFix project. The title of the paper is „Solving the carbon-dioxide buoyancy challenge: The design and field testing of a dissolved CO2 injection system“ and its first author is Dr. Bergur Sigfússon.

Long-term security is critical to the success and public acceptance of geologic carbon storage. Much of the security risk associated with geologic carbon storage stems from CO2 buoyancy. Gaseous and supercritical CO2 are less dense than formation waters providing a driving force for it to escape back to the surface via fractures, or abandoned wells. This buoyancy can be eradicated by the dissolution of CO2 into water prior to, or during its injection into the subsurface. The CarbFix team has demonstrated the dissolution of CO2 into water during its injection into basalts leading directly to its geologic solubility storage. Because the dissolved CO2is no longer buoyant, the storage formation does not have to be as deep as for supercritical CO2 and the cap rock integrity is less important. This increases the potential storage resource substantially compared to the current estimated storage potential of supercritical CO2

Solvin

g the carbon-dioxide buoyancy challenge: The design and field testing of a dissolved CO2 injection systempaper

sigfusson-paper.png