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A Review of Natural CO₂ Occurrences and Releases and their Relevance to CO₂ Storage

1 September 2005
Storage

The aim of this study was to evaluate natural occurrences of CO₂ leakage and compare and contrast them with engineered storage of CO₂ in geological formations. The objective of the study was to provide a reference manual for IEA Greenhouse Gas R&D Programme members and others interested in the subject, to provide a factual and balanced review of natural CO₂ releases and their relevance to geological CO₂ storage.

Technical Report

CO₂ Storage by Mineral Carbonation

1 September 2005
Storage
Utilisation

In 2000 the IEA GHG R&D programme issued a comprehensive report on technologies for capture of CO₂ using mineral carbonation. This report evaluated 6 candidate processes but concluded that only one process involving a hot melt of magnesium chloride showed any promise. Mineral carbonation is attractive as a CO₂ storage option because of its permanency but would involve mining, processing and re-depositing of massive quantities of material. In the mean time research has continued and it was felt that it was timely to conduct a more up to date study. As a first step a short review of recent developments and literature was commissioned to ascertain whether it was worthwhile going ahead with a full scale study.

Technical Report

Well Bore Integrity Workshop Houston, TX, USA, 4-5 April 2005

1 September 2005
Event Proceedings
Storage

The integrity of well bores, their long-term ability to retain CO₂, has been identified as a significant potential risk for the long-term security of geological storage facilities. A workshop was held in April 2005 to bring together over 50 experts from both industrial operators and from research organisations. Industrial operations are part of CO₂ enhanced oil recovery (EOR) projects or acid gas waste disposal projects. Current research includes laboratory investigations that attempt to simulate long-term geochemical and mechanical processes that may affect well completion materials – mainly cement; field studies of well completions that have been exposed to CO₂ during industrial projects as described above, and modelling studies, both of local reactions and upscaled simulations of leakage across basins.

Technical Report

Launch Meeting of the Risk Assessment Network

23 August 2005
Event Proceedings
Storage

This report summarises the major outcomes of the launch meeting of the Risk Assessment Network which was jointly organised by IEA GHG and TNO with the support of EPRI. It was held at the TNO offices in Utrecht, Netherlands, 23-24 August 2005. This international meeting was attended by 40 delegates from industry and research institutes drawn from nine countries.

Technical Report

Monitoring Workshop – Inaugural Meeting

1 March 2005
Event Proceedings
Storage

The objective of the workshop was to get a common understanding of the current state of the art, to identify the techniques available, and to assess their limitations. This was achieved by using the results available from projects that are currently monitoring injected CO₂. The aim was then to develop a view of where the technology needs to go from here, in order to develop stakeholder confidence that injected CO₂ can be monitored and verified and any leakage quickly detected

Technical Report

Natural Analogues for the Geological Storage of CO₂

1 March 2005
Storage

This is the final report of the Natural Analogues for the Storage of CO₂ in the Geological Environment (NASCENT) project. The Nascent project has studied natural accumulations of carbon dioxide (CO₂ – an important greenhouse gas, thought to be responsible for climate change) as analogues of the geological storage of anthropogenic CO₂ emissions.Before large-scale underground CO₂ storage can take place, it will be necessary to demonstrate that the processes are well understood, risks to the environment and human populations are low, and environmental disturbances can be minimised. One way of demonstrating that CO₂ can remain trapped underground for geologically significant timescales is to provide evidence from existing naturally occurring accumulations. These accumulations occur in a variety of geological environments and many can be demonstrated to have retained CO₂ for periods longer than those being considered for CO₂ storage.

Technical Report

Building the Cost Curves for CO₂ Storage: European Sector

1 February 2005
Costs of CCUS
Storage

This report reviews the development of a CO₂ storage cost curve for Europe. The study has been carried out by The Netherlands Geological Survey (TNO-NITG) in co-operation with the geological surveys of Britain (BGS) and Denmark and Greenland (GEUS).

Technical Report

Building the Cost Curves for CO₂ Storage: North America

1 February 2005
Costs of CCUS
Storage

This report reviews the development of a CO₂ storage cost curve for North America, which covers on-shore USA and Canada. The study has been carried out by Battelle, USA in co-operation with the Alberta Energy and Utilities Board, Canada.

Technical Report

Assessment of the Costs and Enhanced Potential for Carbon Sequestration in Soils

1 February 2005
Costs of CCUS
Storage

This study assesses the quantities of additional carbon that could be sequestered in a range of soils, and the costs of sequestration. The study was carried out by a consortium led by the Australian Cooperative Research Centre for Greenhouse Accounting, including experts from Australia, the USA, Sweden and Kazakhstan.

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