Suitability analysis and revised strategies for marine environmental carbon capture and storage (CCS) monitoring

Lichtschlag, A, Pearce, CR, Suominen, M, Blackford, JC, Borisov, SM, Bull, JM, de Beer, D, Dean, M, Esposito, M, Flohr, A, Gros, J, Haeckel, M, Huvenne, VAI, James, RH, Koopmans, D, Linke, P, Mowlem, M, Omar, AM, Schaap, A, Schmidt, M, Sommer, S, Strong, JA and Connelly, DP 2021 Suitability analysis and revised strategies for marine environmental carbon capture and storage (CCS) monitoring. International Journal of Greenhouse Gas Control, 112. 103510.

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Environmental monitoring of offshore Carbon Capture and Storage (CCS) complexes requires robust methodologies and cost-effective tools to detect, attribute and quantify CO2 leakage in the unlikely event it occurs from a sub-sea floor reservoir. Various approaches can be utilised for environmental CCS monitoring, but their capabilities are often undemonstrated and more detailed monitoring strategies need to be developed. We tested and compared different approaches in an offshore setting using a CO2 release experiment conducted at 120 m water depth in the Central North Sea. Tests were carried out over a range of CO2 injection rates (6 - 143 kg d− 1) comparable to emission rates observed from abandoned wells. Here, we discuss the benefits and challenges of the tested approaches and compare their relative cost, temporal and spatial resolution, technology readiness level and sensitivity to leakage. The individual approaches demonstrate a high level of sensitivity and certainty and cover a wide range of operational requirements. Additionally, we refer to a set of generic requirements for site-specific baseline surveys that will aid in the interpretation of the results. Critically, we show that the capability of most techniques to detect and quantify leakage exceeds the currently existing legal requirements.

Item Type: Publication - Article
Additional Keywords: CCS monitoring Leakage detection Leakage attribution Leakage quantification Monitoring strategy Suitability analysis
Divisions: Plymouth Marine Laboratory > National Capability categories > National Capability Modelling
Plymouth Marine Laboratory > Science Areas > Marine System Modelling
Depositing User: S Hawkins
Date made live: 26 Nov 2021 14:30
Last Modified: 13 Dec 2023 12:20

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