Seal, and overburden rock characterization of potential CO2 storage sites in the northern North Sea
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- Institutt for geofag [2342]
Abstract
Building confidence in subsurface geological carbon dioxide (CO2) injection project The anthropogenic atmospheric carbon dioxide (CO2) is one of the major greenhouse gases that are responsible for human-induced global warming. To avoid further damage, we need to cut half of the CO2 emission by 2030 and net-zero emissions by 2050. Subsurface geological storage of CO2 is one of the viable solution that cuts emissions with the lowest possible cost. The injected CO2 will be captured from the point sources, transported, and permanently stored in the suitable subsurface geological formations. However, injecting CO2 into the subsurface has several failure risks. Therefore, a detailed integrated analysis is needed to build confidence for safe and permanent subsurface geological CO2 storage. This doctoral thesis study evaluates the impermeable layers called seals/caprocks, which prevent the less dense CO2 plume from migrating back to the atmosphere. A workflow is developed to characterize target caprock fracture risks by integrating different analytical techniques. Characterizing of the fracture risks help build our knowledge and confidence in safe and permanent subsurface CO2 storage. Without permanently removing the greenhouse gases, we might trigger irreversible environmental tipping points. Crossing the critical threshold might be devastating for the human race. Therefore, this study partially contributes to the fight against human-induced global warming.List of papers
Paper 1: Organic-Rich Shale Caprock Properties of Potential CO2 Storage Sites in the Northern North Sea, Offshore Norway. Rahman, Md Jamilur; Fawad, Manzar & Mondol, Nazmul Haque. Marine and Petroleum Geology, 2020, 122, p.104665. DOI: 10.1016/j.marpetgeo.2020.104665. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.marpetgeo.2020.104665 |
Paper 2: Probabilistic Analysis of Vette Fault Stability in Potential CO2 Storage Site Smeaheia, Offshore Norway. Rahman, Md Jamilur; Choi, Jung Chan; Fawad, Manzar & Mondol, Nazmul Haque. International Journal of Greenhouse Gas Control, 2021, 108, p.103315. DOI: 10.1016/j.ijggc.2021.103315. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.ijggc.2021.103315 |
Paper 3: Effect of overburden spatial variability on field-scale geomechanical modeling of potential CO2 storage site Smeaheia, offshore Norway. Rahman, Md Jamilur; Fawad, Manzar; Choi, Jung Chan & Mondol, Nazmul Haque. Journal of Natural Gas Science and Engineering, 2022, 99, p.104453. DOI: 10.1016/j.jngse.2022.104453. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.jngse.2022.104453 |
Paper 4: 3D field-scale geomechanical modeling of potential CO2 storage site Smeaheia, offshore Norway. Rahman, Md Jamilur; Fawad, Manzar & Mondol, Nazmul Haque. energies, 2022, 15(4), p.1407. DOI: 10.3390/en15041407. The article is included in the thesis. Also available at: https://doi.org/10.3390/en15041407 |