Simulation of the Near Field Physiochemical Impact of CO2 Leakage into Shallow Water in the North Sea.

Dewar, Marius, Wei, Wei, McNeil, David and Chen, Baixin (2013) Simulation of the Near Field Physiochemical Impact of CO2 Leakage into Shallow Water in the North Sea. Open Access Energy Procedia, 37 . pp. 3413-3423. DOI 10.1016/j.egypro.2013.06.230.

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Abstract

This study involves developing a small scale two-fluid numerical model to simulate CO2 bubble leakage from
potential storage sites, and to predict the plume dynamics and dissolution of the bubbles dispersed from the sediments
into the water column and beyond with the resultant seawater pH change. Calibrating results to lab and in-situ
experimental data, the model is applied for simulations of potential sub-seabed reservoir leakages in locations within
where carbon storage is being considered. The model consists of a sub-model that
predicts the initial bubble size forming on the water basin and further sub models for mass and momentum exchange
to the seawater. It is found that it is unlikely that bubbles smaller than 30mm diameter will reach the water surface
and atmosphere when leaked from depths greater than 20m, and will fully dissolve in the waters creating pH changes
of various concentrations dependent on the plume dynamics and ocean currents at the leakage sites.

Document Type: Article
Funder compliance: info:eu-repo/grantAgreement/EC/FP7/265847
Keywords: CO2; Bubble; Dissolution; Numerical Model; Carbon Capture and Storage; CCS
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.1016/j.egypro.2013.06.230
ISSN: 1876-6102
Projects: ECO2
Date Deposited: 05 Nov 2013 10:00
Last Modified: 05 Nov 2013 10:00
URI: http://oceanrep.geomar.de/id/eprint/22360

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