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Illustration: Alligator film /BUG / Statoil

Enabling onshore CO2 Capture and Storage


Research institutes across Europe join forces through a new scientific project named ENOS (ENabling ONshore CO2 storage in Europe). IRIS is one out of almost 30 research institutes included in the project.


The project was launched in September 2016, and the main objectives of the European Horizon 2020 project are to increase field experience relevant to geological storage of CO2, refine techniques and tools used for site selection and monitoring and to advance communication between science and society on the geological storage of CO2. The project will run until August 2020.

ENOS strives to enhance the development of CO2 storage onshore, close to CO2 emission points. Several field pilots in various geological settings will be studied in detail and best practices that stakeholders can rely on will be produced. In this way, ENOS will help demonstrate that CO2 storage is safe and environmentally sound and increase the confidence of stakeholders and the public in CCS as a viable mitigation option.

CO2 injection testing
Several onshore research sites will serve to test CO2 injection. At the storage pilot of Hontomin in Spain, 10,000 tonnes of CO2 will be injected into a limestone rock layer at a depth of 1,500 m. Key parameters will be studied in order to monitor the evolution of the geological reservoir and to demonstrate that the storage operations have no negative impact on the environment. Innovative injection strategies, designed to optimise storage whilst guaranteeing site safety in the short and long term, will also be tested.

Tests at two other sites will allow project partners to improve techniques to detect CO2 in the subsurface so that, in the unlikely case that CO2 leakage were to occur, smaller amounts of CO2 could be identified more quickly.  Such in-situ experiments will also help provide ground truthing for leakage simulations in two different geological settings, one in a shallow aquifer and the other along a fault plane. The first site, an initiative of the University of Nottingham and the British Geological Survey, is a field laboratory near Nottingham, UK, called the ‘GeoEnergy Testbed’, and the second is the ‘Sulcis Fault Lab’, located in Sardinia, Italy.
An additional two proposed pilot storage sites, LBr-1 in the Czech Republic and Q16 Maas in the Netherlands, complete the ENOS test site portfolio.
50 Mt of CO2 already safely stored worldwide
CO2 Capture and Storage (CCS) is identified by the IPCC as a key climate-change mitigation technology, as detailed in its 2005 Special Report[1]. CCS offers a solution to bridge the gap to a low carbon future in scenarios until the use of fossil fuels is discontinued. It can even generate negative carbon emissions by removing CO2 from the atmosphere, for example when coupled with bioenergy. Today, after more than 25 years of CCS research, 15 industrial-scale projects are in operation worldwide, with a further six scheduled to join these in 2017, and 17 new projects currently in preparation. It has thus become a reality to capture CO2 (coal-fired power plants, natural gas processing factories, cement and steel manufacturing plants, etc.) and store it in deep saline aquifers or depleted hydrocarbon reservoirs. To date, some 50 Mt of CO2 has been safely stored underground. However, this represents only a small step (0.06%) towards international 2050 targets. The International Energy Agency (IEA) recommends increasing this volume to 90 Gt of CO2 stored by 2050, in addition to using all other low-carbon options, in order to keep global warming to the 2°C maximum defined by the Paris Agreement that was ratified on 4 November 2016.
About ENOS
The ENOS (ENabling ONshore CO2 storage in Europe) project, coordinated by BRGM (France), was launched in September 2016 and will last for four years. It unites 29 organisations across 17 countries, and is financed by the European Union’s H2020 programme with a budget of 12.5 M€ as well as partners’ and national funds. ENOS is an initiative of CO2GeoNet, the European Network of Excellence on the geological storage of CO2 (www.co2geonet.com).

List of partners (*= Members of CO2GeoNet)

Europe:CO2GeoNet        Italy: NHAZCA, OGS*, Sapienza University of Rome*, Sotacarbo
Austria: GBA* Norway: IRIS*
Belgium: GSB-RBINS* Romania: GeoEcoMar*
Croatia: UNIZG-RGNF* Slovakia: SGUDS
Czech Republic: Czech Geological Survey*   Slovenia: GEOINZ*
Denmark: GEUS* Spain: CIEMAT, CIUDEN*,  IGME*
Estonia: TTUGI* The Netherlands: TNO*
France: BRGM* (Coordinator), Flodim, Geogreen, IDIL Turkey: METU-PAL*
Germany: BGR* UK: BGS*, Heriot Watt University*, Silixa,
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