Aeolian-Lacustrine Margins: Implications for Carbon Capture and Storage within the Rotliegend Group, Southern North Sea

Priddy, C.; Pettigrew, R.; Watson, D.; Regis, A.; Clarke, S.

Abstract

The Leman Sandstone, previously explored for hydrocarbons, has the potential to provide new opportunities within carbon capture and storage to help meet ‘net zero’ targets by 2050. The wealth of open access data, particularly core, available from the North Sea allows for detailed reassessment of depleted reservoirs. A regional study of the sedimentology and petrophysical properties of the Leman Sandstone and Silverpit formations within quadrants 43, 44, 48 and 49 of the Southern North Sea has been conducted. The Leman Sandstone comprises sediments deposited within aeolian, fluvial and lacustrine environments. Complex interactions are observed between these environments as a result of cyclic transgressions and regressions of the aeolian and lacustrine settings, along with the migration and expansion of the fluvial system. Each depositional environment, along with their transitional, interacting environments, have relatively distinct petrophysical properties and cross-plot clusters that can be used as a predictive tool for reservoir interpretation in the absence of core, despite extensive sediment recycling between environments. Moreover, the complex interactions between the depositional environments resulted in multiple intraformational seals within the reservoir units, increasing the potential for capillary trapping of CO2. Subsequently, these lower net to gross, mixed systems could potentially be more favourable for CCS.

Citation

Priddy, C., Pettigrew, R., Watson, D., Regis, A., & Clarke, S. (2024, June). Aeolian-Lacustrine Margins: Implications for Carbon Capture and Storage within the Rotliegend Group, Southern North Sea. Presented at 85th EAGE Annual Conference & Exhibition (including the Workshop Programme), Oslo, Norway

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 85th EAGE Annual Conference & Exhibition (including the Workshop Programme)
• Start Date: Jun 10, 2024
• End Date: Jun 13, 2024
• Acceptance Date: Jun 14, 2024
• Online Publication Date: Jun 14, 2024
• Publication Date: Jun 14, 2024
• Deposit Date: Sep 13, 2024
• Publisher: European Association of Geoscientists and Engineers
• Volume: 2024
• Pages: 1-5
• ISBN: 9789462824980
• DOI: https://doi.org/10.3997/2214-4609.202410276
• Public URL: https://keele-repository.worktribe.com/output/850554
• Publisher URL: https://www.earthdoc.org/content/papers/10.3997/2214-4609.202410276