Abstract
Carbon capture and storage (CCS) is a key technology to reduce carbon dioxide (CO2) emissions from industrial processes in a feasible, substantial, and timely manner. For geological CO2 storage to be safe, reliable, and accepted by society, robust strategies for CO2 leakage detection, quantification and management are crucial. The STEMM-CCS (Strategies for Environmental Monitoring of Marine Carbon Capture and Storage) project aimed to provide techniques and understanding to enable and inform cost-effective monitoring of CCS sites in the marine environment. A controlled CO2 release experiment was carried out in the central North Sea, designed to mimic an unintended emission of CO2 from a subsurface CO2 storage site to the seafloor. A total of 675 kg of CO2 were released into the shallow sediments (∼3 m below seafloor), at flow rates between 6 and 143 kg/d. A combination of novel techniques, adapted versions of existing techniques, and well-proven standard techniques were used to detect, characterise and quantify gaseous and dissolved CO2 in the sediments and the overlying seawater. This paper provides an overview of this ambitious field experiment. We describe the preparatory work prior to the release experiment, the experimental layout and procedures, the methods tested, and summarise the main results and the lessons learnt.
| Original language | English |
|---|---|
| Article number | 103237 |
| Number of pages | 20 |
| Journal | International Journal of Greenhouse Gas Control |
| Volume | 106 |
| Early online date | 23 Jan 2021 |
| DOIs | |
| Publication status | Published - 1 Mar 2021 |
Funding
The STEMM-CCS project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 654462.Other work which contributed to this experiment has been funded by the UK's Natural Environmental Research Council: the SPITFIRE project, grant number NE/L002531/1; the Climate Linked Atlantic Sector Science project, funded through the single center national capability programme grant number NE/R015953/1; the Carbonate Chemistry Autonomous Sensor System (CarCASS) project, grant number NE/P02081X/1. Further funding was received from Bayesian Monitoring Design (BayMoDe), funded by the Research Council of Norway through the CLIMIT programme, project 254711; Act on Offshore Monitoring (ACTOM), funded through the ACT programme (Accelerating CCS Technologies Project) Horizon2020 project No 294766; and the Max Planck Society for Advancement of Science, Germany. The STEMM-CCS project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 654462 . Other work which contributed to this experiment has been funded by the UK’s Natural Environmental Research Council: the SPITFIRE project , grant number NE/L002531/1 ; the Climate Linked Atlantic Sector Science project, funded through the single center national capability programme grant number NE/R015953/1 ; the Carbonate Chemistry Autonomous Sensor System (CarCASS) project , grant number NE/P02081X/1 . Further funding was received from Bayesian Monitoring Design (BayMoDe), funded by the Research Council of Norway through the CLIMIT programme, project 254711; Act on Offshore Monitoring (ACTOM), funded through the ACT programme (Accelerating CCS Technologies Project) Horizon2020 project No 294766; and the Max Planck Society for Advancement of Science, Germany .
Keywords
- attribution, detection and quantification
- carbon dioxide capture and storage (CCS)
- CO leakage
- marine field experiment
- monitoring
- offshore carbon storage