Solubility trapping in formation water as dominant CO2 sink in natural gas fields

Stuart M. V. Gilfillan (), Barbara Sherwood Lollar, Greg Holland, Dave Blagburn, Scott Stevens, Martin Schoell, Martin Cassidy, Zhenju Ding, Zheng Zhou, Georges Lacrampe-Couloume and Chris J. Ballentine
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Stuart M. V. Gilfillan: School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Barbara Sherwood Lollar: University of Toronto, 22 Russell Street, Toronto, Ontario M5S 3B1, Canada
Greg Holland: School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Dave Blagburn: School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Scott Stevens: Advanced Resources International, 4501 Fairfax Drive, Suite 910, Arlington, Virginia 22203-1661, USA
Martin Schoell: GasConsult International, 2808 Adeline Street #3, Berkeley, California 94703, USA
Martin Cassidy: University of Houston, Houston, Texas 77204-5503, USA
Zhenju Ding: School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Zheng Zhou: School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Georges Lacrampe-Couloume: University of Toronto, 22 Russell Street, Toronto, Ontario M5S 3B1, Canada
Chris J. Ballentine: School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK

Nature, 2009, vol. 458, issue 7238, 614-618

Abstract: CO2 storage: natural gas fields as a model for power-station emissions burial One of a number of options available to mitigate the effects of anthropogenic CO2 on climate is the burial of emissions from power stations and other industrial sources. But how safe and how efficient is burial? The design and long-term viability of a site depend critically on how and where the CO2 is stored. Natural gas fields can serve as analogues for safe geological storage of anthropogenic CO2 over millennial timescales, and now a study using noble gas and carbon isotope tracers has characterized the processes involved in removal of the CO2 phase in nine natural gas fields from North America, China and Europe. The dominant sink is found to be dissolution in formation water, with fixation in carbonate minerals playing only a minor role. This suggests that models of long-term storage of CO2 waste in similar geological systems need to focus on the potential mobility of CO2 dissolved in water.

Date: 2009
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DOI: 10.1038/nature07852

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