The PhD defence and trial lecture will be held in Auditorium 1, The Geology Building. In some cases, it will be possible to attend the trial lecture and dissertation digitally, in that case a link to Zoom will be posted.
Trial lecture
Monday 27 June, 13:00, Aud 1, The Geology Building:
Carbon dioxide movement in the sedimentary sequence - differences and similarities between the controlling factors for natural gas in reservoirs and CO2
Conferral summary (in Norwegian)
Carbon capture and storage (CCS) er en teknologi for å ta ut klimagassen CO2 før den slippes ut i atmosfæren, for så å lagre den trygt under bakken. Dette doktorgradsarbeidet evaluerer det ugjennomtrengelige laget kalt takbergart (caprock), som hindrer lagret CO2 i å migrere oppover fra det geologisk lageret. En arbeidsflyt er utviklet for å karakterisere målrettede fjellbruddrisikoer ved å integrere alle analyser. Utarbeidelse av slike detaljerte caprock-karakteriseringer bidrar til å bygge opp vår kunnskap og tillit til en sikker og permanent CO2-lagring under overflaten.
Main research findings
Popular scientific article about Rahman’s dissertation:
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.
Photo and other information:
Press photo: Md Jamilur Rahman, portrait; 500px. Photo: Private
