ULTimateCO2 report released January 2016: Learnings and conclusions from a 4-year research project

This report summarises the major outcomes of the project and provides new information and guidance on the best approaches that can be taken to evaluate some long-term processes related to the geological storage of CO2.   

The report is aimed primarily at storage site operators and regulators, although it is also expected to be of interest to national authorities, NGOs and the scientific research community.

The outcomes of ULTimateCO2 provided in this document are intended to be used at various stages in the lifetime of a commercial-scale CO2 storage site: design and setting up - characterisation and monitoring of the reservoir geology - CO2 injection, and after site closure, the Transfer of Responsibility to the Competent Authority.

The report will be hinged around the three high-level criteria, cited in the EC CCS Directive, that must be met to be able to demonstrate permanent containment of CO2:

1. The conformity of the actual behaviour of the injected CO2 with the modelled behaviour;

2. The absence of any detectable leakage;

3. That the storage site is evolving towards a situation of long-term stability.


State-of-the-Art Report

Read about the latest information on the uncertainty associated with long term CO2 geological storage.

The report contains the partners’ pooled knowledge and provides a view of the current state-of-the-art for the issues addressed by this project:

  • Long-term reservoir trapping efficiency
  • Long-term sealing integrity of faulted and fractured caprock
  • Near-well leakage characterization and chemical processes
  • Long term behavior of stored CO2 looking at the basin scale
  • Uncertainty assessment

Each chapter is divided into two sections: (i) a summary which explains in “simple words” the main issues and objectives of the WP, and (ii) a current state-of-the-art section that provides a more sound review on the specific studied processes. The aim is to provide answers to pertinent questions from a variety of users, particularly project owners, site operators and national authorities, about their exposure to uncertainty downstream of closure of a CO2 geological storage site.



Dernière mise à jour le 26.01.2016