The full article, available in our technical publications library (see link below), includes hyperlinks to relevant PDF abstracts published on the EarthDoc online database. Access to EarthDoc is managed by the European Association of Geoscientists and Engineers (EAGE).

Five Broad Themes

1. CO2 Storage Methods: Investigation of methods for storing CO2 in subsurface geological formations such as depleted hydrocarbon reservoirs, saline aquifers, and shale formations.

2. Geomechanical Considerations and Subsurface Characterization: Geomechanical aspects such as pressure-induced leakage, induced seismicity, and fault-induced CO2 migration must all be understood. Subsurface characterization and modeling before CO2 injection are critical to mitigate risks associated with these phenomena.

3. Measurement and Monitoring Technologies: The application of ultra-high resolution (UHR) towed streamer seismic and distributed acoustic sensing (DAS) in measuring seismic data for CCS applications is growing. These technologies help in high-resolution imaging of the CO2 plume and can potentially monitor the CO2 plume dynamics.

4. Site Screening and Selection: Several abstracts presented methodologies for CCS site screening and selection, with emphasis on data-intensive processes, machine learning-based interpretation, and comprehensive geological evaluations. Basin-scale considerations, reservoir properties, subsurface characterization, and uncertainty management are all relevant to the site selection process.

5. Long-term CO2 Sequestration and Monitorability: The transition from structural and stratigraphic trapping to dissolution trapping over geological timescales is highlighted. It also highlights the importance of 4D (time-lapse) seismic monitoring for detecting changes due to CO2 injection.

Familiarity with the academic and industry literature related to CCS, as well as the research methods and scientific conventions used in these fields, would be beneficial when reading the full article.