Creativity, competence, and complementarity

The CO2-DISSOLVED partnership was constructed by seeking partners that could provide creativity and the necessary skills to carry out the ambitious technical tasks foreseen in this project.

The original idea was hatched at BRGM, initiator of this partnership, who is now project manager and team coordinator, and also in charge of several technical tasks (reactive transport modeling, geochemical and geophysical monitoring, risk assessment, ...).

The concept basically relies on the partnership’s capacity to find the best technology for dissolving efficiently and safely CO2 in brine. Involvement of the American SME Partnering in Innovation inc. is of great importance as they provide us with their novel patented aqueous-based in-well technology. This system is capable of capturing CO2 from flue gas emissions by means of dissolution in water, taking benefit of the in-well high pressure. So this has a double benefit for the project, since both the capture and the CO2 dissolution questions now have an answer.

However, understanding the geochemical impact of the continuous injection of CO2-rich brine in an aquifer cannot be assessed on the basis of one theoretical and modeling study alone. The GeoRessources laboratory therefore proposed to design a new experimental facility dedicated to studying the geochemical impact of injected dissolved CO2 on the reservoir rock. Their sound experience acquired through former or ongoing experimental work devoted to CCS is a real benefit for the project.

This project, aiming at studying the technical-economic viability of a novel concept coupling CO2 storage and geothermal heat recovery, also demanded the involvement of specialists in geothermal energy and CCS, a role respectively fulfilled by two major French actors, CFG Services and Geogreen. CFG Services provides its in-depth knowledge of both the technology and the economics of low-medium enthalpy geothermal energy exploitation in France. Geogreen is responsible for the final integration task of the project relying, in particular, on a Life Cycle Analysis of the whole chain: CO2 capture, dissolution in brine, injection in the aquifer, and heat recovery.

The economic aspects are obviously vital in determining the viability of the concept. The LEO team of the University of Orléans, with previous experience acquired in other CCS projects, was clearly the most appropriate partner for designing and modeling the new economics around the CO2-DISSOLVED concept.

An important task in the expected demonstration of the viability of the concept will rely on applications to carefully selected test-cases, keeping in mind that the future of positive conclusions to the CO2-DISSOLVED approach will inevitably rely on the construction of an industrial pilot. From this point of view, and considering that European funds might be available, the need was felt to open up the partnership to include a European partner. Although ineligible for funding in the framework of this ANR call for proposals, BGR (German Federal Institute for Geosciences and Natural Resources) nevertheless accepted to participate in the CO2-DISSOLVED project, bringing in their full knowledge of the German geothermal and CCS market. More specifically, they will provide the data necessary for the modeling of a German test-case that they will select.

 

Dernière mise à jour le 06.03.2014