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4th Meeting of the Risk Assessment (Management) Network

1 July 2009
Event Proceedings
Storage

The fourth IEA GHG Risk Assessment Network Meeting was held on the 16th—17th April 2009 in Melbourne, Australia, and hosted by CO₂CRC. Cliff Kavonic of Victorian Department of Primary Industries gave the official welcome. The Victorian Government was that day publishing a report by Geoscience Victoria on the storage potential in the Gippsland basin in south Victoria. The fifty six attendees enjoyed the discussions based around the six sessions. These were on reports from other initiatives, leakage impacts, combining monitoring with modelling and risk assessment, insurance and risk, risk communication, and updates from real projects.

Technical Report

Long Term Integrity of CO₂ Storage – Well Abandonment

1 July 2009
Storage

This report focuses on potential hazards to geological storage of CO₂ related to previously abandoned deep oil and gas wells. As many prospective CO₂ storage projects will be situated in mature sedimentary basins, these operations need to accommodate previously drilled and abandoned wells. The current study aims to provide a high order evaluation of abandoned wells and their suitability to CO₂ storage operations. To this purpose an overview of the current state of knowledge on potential degradation mechanisms of typical well materials (i.e. cement and steel) is presented. Several case studies are described, illustrating some typical aspects associated with abandoned wells in the context of geological storage of CO₂. Furthermore, a geographical overview of numerous well abandonment regulations is provided, reflecting significant differences in regulatory demands around the world. Moreover, both abandonment regulations and practices historically gradually developed to the present high standards. As a consequence, especially older wells are considered to be a potential threat to long term storage integrity. Various risk assessment methodologies are described that are tailored to well integrity evaluation for geological CO₂ storage. Finally, an overview of potential corrective measures and monitoring strategies is presented.

Technical Report

5th Meeting of the Wellbore Integrity Network

1 June 2009
Event Proceedings
Storage

The IEA GHG Wellbore Integrity Network has been running for 5 years now, and the meeting in 2009 was held in Calgary, Canada. The attendance for the meeting covered the usual mix of industry, academia, research and regulators, but there was a noted increase in attendance from industrial companies. This was demonstrative of the local area that the meeting was held in, with a large number of oil companies working in the surrounding province. This increased industry representation moved the discussion sessions to areas previously not addressed, or only addressed in brief outline, and this is indicative of the progress of the meeting and its continued worth. A possibility for the future of the network will be an alteration in its role, from pure research into wellbore integrity, materials and abandonment procedures, to one of education of industrial operators, and the broaching of the gap between experience gained from the oil and gas industry, and the needs and demands of regulations relating to CO2 Capture and Storage (CCS) operations.

Technical Report

Safety in Carbon Dioxide Capture, Transport and Storage

1 June 2009
Capture
Storage

Within the next few years it is expected that an increasing number of commercial-scale demonstrations of CO2 capture and storage technology will be built and brought into operation. Many aspects of the design of such facilities including issues relating to engineering design, environmental impacts, standards and permitting have been the subject of studies undertaken for the IEA GHG. So far no study has been dedicated specifically to the issue of safety in the above ground elements of CCS systems although such safety issues have been addressed to some extent in earlier studies. This study was designed specifically to examine the safety issues which are likely to arise when preparing safety cases and planning emergency procedures for CO2 capture and storage (CCS) projects

Technical Report

CO₂ Geological Storage Modelling Workshop

1 April 2009
Event Proceedings
Storage

The concept of this workshop was previously proposed to the IEA Greenhouse Gas R&D Programme (IEA GHG) by BRGM and Schlumberger, and following the approval of the workshop in principle, discussion was initiated in June 2008 at the IEA GHG Joint Network Meeting in New York. The suggestion was that CO₂ geological modelling for Carbon Dioxide Capture and Storage (CCS) was an important topic not being adequately dealt with by the existing storage based research networks. Further discussions by these network groups concluded that this was indeed a gap, and that an initial workshop should be held to determine the viability of forming a separate network dealing solely with geological storage modelling.

Technical Report

Storage in Depleted Gas Fields

1 March 2009
Storage

The initial specification required a desk-based study to: 1. Assess the future implications for CO₂ storage of future natural gas production trends, especially the potential future exploitation of fields with naturally-high CO₂ 2. Undertake a source-sink matching exercise, utilising the IEA GHG database on point source emissions and with due consideration to existing transport pipeline infrastructure. The specification specifically stated that ship transportation should not be considered; content; 3. Determine the potential role of enhanced gas recovery (CO₂-EGR) in CO₂ 4. Develop an analytical screening process/tool for the selection of gas fields suitable for CO storage; 2 storage, allowing ranking of opportunities and assessment of potential global CO₂ 5. Estimate CO storage capacity; 2 6. Provide a summary of opportunities around the world where CO storage costs in depleted gas fields; 2 storage in depleted gas fields could be feasible from both technological and economic perspectives

Technical Report

Upgraded calculator for CO₂ pipeline systems

1 March 2009
Costs of CCUS
Transport

A contract to develop and upgrade the original Woodhill program and the network program was awarded to Gastec UK/AMEC who had already produced the new network design program. After obtaining the original code from Woodhill-Frontier options were examined and it was felt that as both programs were Excel-based it would be simplest to amalgamate them into one program using the original Woodhill interface where possible.The possibility of adding a graphical map-based interface for the distributed collection network was investigated as an additional option but although possible the necessary licence for commercial use was found to be too costly. It was on this basis that GastecUK/AMEC proceeded with the development of the upgraded calculator.

Technical Report

Post Combustion capture – Solid Sorbents and Membranes

1 February 2009
Capture

The aim of much of this research is cost reduction: to find a process that is cheaper than solvent scrubbing processes. NETL has produced a figure which plots the cost reduction benefits against the time to commercialisation, although both the benefits and the time are not specified (Figueroa and others, 2008).This report follows on from that on solvent scrubbing for post-combustion carbon capture from coal-fired power plants by considering the use of solid sorbents and membranes instead of solvents. First, mesoporous and microporous adsorbents are discussed: carbon-based adsorbents, zeolites, hydrotalcites and porous crystals. Attempts have been made to improve the performance of the porous adsorbent by functionalising them with nitrogen groups and specifically, amine groups to react with CO₂ and thus enhance the physical adsorption properties. Dry, regenerable solid sorbents have attracted a good deal of research. Most of the work has been on the carbonation/calcination cycle of natural limestone but there have also been studies of other calcium-based sorbents and alkali metal-based sorbents. Membranes have also been studied as potential post-combustion capture devices. Finally, techno-economic studies predicting the economic performance of solid sorbents and membranes are discussed

Technical Report

Joint Network Meeting report

1 December 2008
Event Proceedings
Storage

The agenda was structured in accordance with the 3 criteria with sessions on review of performance monitoring tools, data integration and demonstrating monitoring data conforms with predictive modelling, developing protocols and strategies to form a monitoring plan and monitoring of the outer envelope – demonstrating no leakage. There was also a discussion session on CCS in the CDM – what modelling is required for monitoring and a session on updates and permanent Installations; current and future activities. The meeting ended with a review of the main learnings taken from the meeting.

Technical Report

Environmental Impacts Meeting Report

1 December 2008
Event Proceedings
Storage

The meeting was held over 3 days, and covered views of both regulators and industry, and the presentations covered impacts of leaks in both terrestrial and marine environments, and also extensively covered the experience of various research bodies and projects from Europe and the USA. The closing session included an open discussion to determine the needs of the different groups likely to be involved in a storage project, from regulators, industry, researchers and the general public.

Technical Report

3rd Meeting of the Oxy-Combustion Network

1 November 2008
Capture
Event Proceedings

This report presents an overview of the workshop and summarises the current status of development of oxy-fuel combustion. The presentations and discussions at the workshop covered a wide range of topics looking at; on-going studies and experimental results, modelling studies, new developments in oxygen production and CO₂ processing, and identification of various issues relevant to the demonstration of oxy-fuel combustion technology.

Technical Report

Reduction of Residential Carbon Dioxide Emissions through the Use of small Cogeneration Fuel Cell Systems

1 November 2008
Capture

The study, comprising a literature review and desk-based assessment, aimed to produce a ‘high level’ overview of potential impacts on groundwater resources from storage operations, concentrating on DSF storage across a range of typical regional settings. The study also highlighted the current state of knowledge and/or gaps, recommending further research priorities where appropriate.

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