Part 1: Gigatonne CCS Searching for Giants - Large-scale CO2 Storage Sites in the Norwegian Sea

TGS is diving deep into existing GeoStreamer 3D seismic data in the Norwegian Sea, seeking large-scale (gigatonne) open saline aquifer CO2 storage sites. While the Bunter formation offers some known closed aquifer storage solutions, they are typically smaller in volume, such as the 100-million-tonne SNS Endurance project. Interim 2030 net-zero goals will require 12 Endurance-size sites per year, so we are searching for something bigger!

TGS introduces a project to uncover storage sites within existing 3D GeoStreamer seismic library data in the Norwegian Sea (Trøndelag Platform)

• The project aims to evaluate the possibilities for scalable and flexible large-scale CO2 storage within open aquifers.
• We use high-quality GeoStreamer seismic and other data to find and understand key subsurface risk associated with the storage complex and quantify their impact on CO2 migration, storage and containment.

What Kind of Aquifers are Likely to Store More Carbon?

There are different ways to conceptualize different types of CO2 storage concepts. Here, we consider that saline aquifer concepts can be considered as either closed, where the store utilizes structural or stratigraphic confinement, or open, where the store does not involve the accumulation of CO2 but instead relies on migration-assisted trapping (including via capillary/residual and solution mechanisms) as the injected CO2 moves through the storage system.