Probabilistic Assessment of Above Zone Pressure Predictions at a Geologic Carbon Storage Site.

ABSTRACT: Carbon dioxide (CO₂) storage into geological formations is regarded as an important mitigation strategy for anthropogenic CO₂ emissions to the atmosphere. This study first simulates the leakage of CO₂ and brine from a storage reservoir through the caprock. Then, we estimate the resulting pressure changes at the zone overlying the caprock also known as Above Zone Monitoring Interval (AZMI). A data-driven approach of arbitrary Polynomial Chaos (aPC) Expansion is then used to quantify the uncertainty in the above zone pressure prediction based on the uncertainties in different geologic parameters. Finally, a global sensitivity analysis is performed with Sobol indices based on the aPC technique to determine the relative importance of different parameters on pre

SUBMITTER: Namhata A 

PROVIDER: S-EPMC5172198 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature