Greensand focused seismic monitoring for offshore CO2 pilot injection

A. Szabados, H. Al Khatib, N. Ahmad, K. Dominek, O. Burachok, T. Roth, N. Schovsbo

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingspeer-review

2 Citations (Scopus)


The Greensand consortium, led by INEOS Energy Denmark, is preparing a CO2 pilot injection to inject up to 15.000 tons of CO2 into the depleted Nini West oil field, Danish North Sea. The operation lasts 90 days and include 14 shipments of CO2 to the Nini site. The injection is cyclic and will be accompanied by three focused seismic acquisitions with the objective to detect and monitor the CO2 plume and to proof the concept of focused seismic offshore. Rock physical modelling implies that the seismic surveys can detect injected CO2 in the reservoir exceeding 4% saturation. The maximum CO2 saturation at the injection well after the last injection cycle will reach up to 55% and will radially migrate up-dip, being dissolved in formation brine and trapped in the reservoir. Such focused and repeated seismic surveys have the potential to replace conventional 4D seismic for CO2 plume migration monitoring requirements, reducing the monitoring costs and environmental footprint during the entire storage field life including the post-closure period of 20 years. If successful, this focused seismic monitoring concept would have positive impact on the commercial viability and environmental footprint of the Greensand project and possibly other offshore CCS site as well.

Original languageEnglish
Title of host publication3rd EAGE Global Energy Transition, GET 2022
PublisherEuropean Association of Geoscientists and Engineers
Number of pages5
ISBN (Electronic)978-171386361-8
Publication statusPublished - 2022
Event3rd EAGE Global Energy Transition Conference and Exhibition - The Hague, Netherlands
Duration: 7 Nov 20229 Nov 2022


Conference3rd EAGE Global Energy Transition Conference and Exhibition
Abbreviated titleGET 2022
CityThe Hague

Programme Area

  • Programme Area 3: Energy Resources


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