Before the storage of CO2 in the Nini field in the North Sea can begin, Greensand Future is currently undertaking extensive measurements of the subsurface. Eight seismometers have been placed on the seabed to record natural seismic activity in the area. Here, they will provide a detailed and, not least, completely up-to-date insight into the geology and other activity at the Nini field. .
The seismometers, which weigh 300 kg each, will collect data on geological conditions and pressure waves in the area. This data will create a baseline to distinguish between natural movements and the changes that occur as a result of the CO2 storage.
The data collection will ensure that the stored CO2 remains safely in the reservoir 1,800 meters below the seabed. The data collection that has begun in the North Sea will complement the results from the pilot phase of Project Greensand, which have been verified by the independent provider of risk, verification and standardization services, DNV, Ineos Energy Denmark states in a statement.
- Right now we are in the process of collecting a large amount of data that can give us an in-depth insight into what is completely natural seismic activity at the Nini field in the North Sea. That baseline will be a crucial tool for us when we start storing CO2. Because by then we can sort out all the data that is created naturally, and thus we will gain insight into how the storage is progressing, says Cecilie Dybbroe Tang, Senior Geologist, INEOS Energy Denmark.
Greensand Future is expected to be the EU's first operational CO2 storage facility with planned start-up in late 2025 or early 2026. The project includes investments of over one billion DKK to expand the capacity.
To start with, Greensand Future aims to capture, transport and store 400,000 tonnes of CO2 per year, with the option to increase and expand the amount of CO2 continuously towards 2030. As the amount of CO2 captured increases, there is potential for safe and permanent storage of up to 8,000,000 tonnes of CO2 annually.
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