Geophysical early warning of salt precipitation during geological carbon sequestration.

ABSTRACT: Sequestration of industrial carbon dioxide (CO₂) in deep geological saline aquifers is needed to mitigate global greenhouse gas emissions; monitoring the mechanical integrity of reservoir formations is essential for effective and safe operations. Clogging of fluid transport pathways in rocks from CO₂-induced salt precipitation reduces injectivity and potentially compromises the reservoir storage integrity through pore fluid pressure build-up. Here, we show that early warning of salt precipitation can be achieved through geophysical remote sensing. From elastic P- and S-wave velocity and electrical resistivity monitoring during controlled laboratory CO₂ injection experiments into brine-saturated quartz-sandstone of high porosity (29%) and permeability (1660

SUBMITTER: Falcon-Suarez IH 

PROVIDER: S-EPMC7536243 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature