QICS Paper: Review and implications of relative permeability of CO2/brine systems and residual trapping of CO2

The adoption of carbon capture and storage (CCS) as a method of mitigating anthropogenic CO2 emissions will depend on the ability of initial geological storage projects to demonstrate secure containment of injected CO2. Potential leakage pathways, such as faults or degraded wells, increase the uncertainty of geological storage security. CCS as an industry is still in its infancy and until we have experience of industrial scale, long term CO2 storage projects, quantifying leakage event probabilities will be problematic. Laboratory measurements of residual saturation trapping, the immobilisation of isolated micro-bubbles of CO2 in reservoir pores, provides an evidence base to determine the fraction of injected CO2 that will remain trapped in the reservoir, even if a leakage event were to occur. Experimental results for sandstone, the most common target lithology for storage projects, demonstrate that 13–92% of injected CO2 can be residually trapped. Mineralisation, the only other geological trapping mechanism which guarantees permanent trapping of CO2, immobilises CO2 over hundreds to thousands of years. In comparison, residual trapping occurs over years to decades, a timescale which is more relevant to CCS projects during their operational phase and to any financial security mechanisms they require to secure storage permits. This is a publication in International Journal of Greenhouse Gas Control, Neil M. Burnside et. al. doi:10.1016/j.ijggc.2014.01.013.

Date (Publication): 2014-04

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13606661

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Edinburgh	Neil M Burnside	not available	Point of contact
University of Edinburgh	Neil M Burnside	not available	Principal investigator

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

NGDC Deposited Data
UKCCS
Carbon capture and storage

dataCentre

Keywords

NERC_DDC

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Language: English

Topic category

Geoscientific information

Begin date: 2010-05

End date: 2014-04 Before

Supplemental Information: NERC grant NE/H013989/1

Reference System Information

No information provided.

Distribution format

Name	Version

OnLine resource

Protocol	Linkage	Name
	http://www.sciencedirect.com/science/article/pii/S1750583614000255

OnLine resource

Protocol	Linkage	Name
	http://www.bgs.ac.uk/ukccs/accessions/index.html#item78193

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services