Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes
Industrial scale Carbon Capture and Storage (CCS) and Carbon Dioxide Removal (CDR) is required for the world to limit global warming to 1.5-2˚C. Methods that verify CO₂ storage will be necessary for legal accounting and public reassurance. Stable isotopes are inherent tracers readily used throughout...
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ftuglasgow:oai:eprints.gla.ac.uk:298000 2023-06-11T04:13:10+02:00 Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes Holdsworth, Chris Tamraz, Laila Gilfillan, Stuart Johnson, Gareth Boyce, Adrian Snæbjörnsdóttir, Sandra 2022-11-16 https://eprints.gla.ac.uk/298000/ unknown Holdsworth, C., Tamraz, L., Gilfillan, S., Johnson, G., Boyce, A. <http://eprints.gla.ac.uk/view/author/1919.html> and Snæbjörnsdóttir, S. (2022) Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes. In: 16th International Conference on Greenhouse Gas Control Technologies (GHGT-16), Lyon, France, 23-27 Oct 2022, (doi:10.2139/ssrn.4278641 <https://doi.org/10.2139/ssrn.4278641>) Conference Proceedings PeerReviewed 2022 ftuglasgow https://doi.org/10.2139/ssrn.4278641 2023-05-11T22:09:39Z Industrial scale Carbon Capture and Storage (CCS) and Carbon Dioxide Removal (CDR) is required for the world to limit global warming to 1.5-2˚C. Methods that verify CO₂ storage will be necessary for legal accounting and public reassurance. Stable isotopes are inherent tracers readily used throughout the natural sciences as indicators of subsurface reactions and temperatures. The aim of this study is to demonstrate the capabilities of these tracers at the Carbfix2 CO₂ mineral storage site in Iceland. We find that oxygen isotope ratios (δ¹⁸O) of water samples are higher than meteoric water due to water-rock interaction in the geothermal reservoir. Water isotope ratios vary across the dataset due to differing steam-water ratios controlled by hydrothermal phase separation. Carbfix2 monitoring wells are depleted in ¹⁸O and ²H relative to other geothermal production wells and calculated unreacted monitoring well fluids. This is likely because monitoring wells receive background fluids that are isotopically distinct from other geothermal production wells. This work demonstrates the capabilities of stable isotope measurements as tracers of active reactions and processes in CCS reservoirs. Measurements can be used as a direct tracer of injected fluids, while also identifying other important reservoir characteristics such as fluid source and water-rock interaction. Conference Object Iceland University of Glasgow: Enlighten - Publications SSRN Electronic Journal |
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University of Glasgow: Enlighten - Publications |
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Industrial scale Carbon Capture and Storage (CCS) and Carbon Dioxide Removal (CDR) is required for the world to limit global warming to 1.5-2˚C. Methods that verify CO₂ storage will be necessary for legal accounting and public reassurance. Stable isotopes are inherent tracers readily used throughout the natural sciences as indicators of subsurface reactions and temperatures. The aim of this study is to demonstrate the capabilities of these tracers at the Carbfix2 CO₂ mineral storage site in Iceland. We find that oxygen isotope ratios (δ¹⁸O) of water samples are higher than meteoric water due to water-rock interaction in the geothermal reservoir. Water isotope ratios vary across the dataset due to differing steam-water ratios controlled by hydrothermal phase separation. Carbfix2 monitoring wells are depleted in ¹⁸O and ²H relative to other geothermal production wells and calculated unreacted monitoring well fluids. This is likely because monitoring wells receive background fluids that are isotopically distinct from other geothermal production wells. This work demonstrates the capabilities of stable isotope measurements as tracers of active reactions and processes in CCS reservoirs. Measurements can be used as a direct tracer of injected fluids, while also identifying other important reservoir characteristics such as fluid source and water-rock interaction. |
format |
Conference Object |
author |
Holdsworth, Chris Tamraz, Laila Gilfillan, Stuart Johnson, Gareth Boyce, Adrian Snæbjörnsdóttir, Sandra |
spellingShingle |
Holdsworth, Chris Tamraz, Laila Gilfillan, Stuart Johnson, Gareth Boyce, Adrian Snæbjörnsdóttir, Sandra Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes |
author_facet |
Holdsworth, Chris Tamraz, Laila Gilfillan, Stuart Johnson, Gareth Boyce, Adrian Snæbjörnsdóttir, Sandra |
author_sort |
Holdsworth, Chris |
title |
Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes |
title_short |
Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes |
title_full |
Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes |
title_fullStr |
Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes |
title_full_unstemmed |
Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes |
title_sort |
tracking co2 injection, migration and fate at carbfix2 using stable isotopes |
publishDate |
2022 |
url |
https://eprints.gla.ac.uk/298000/ |
genre |
Iceland |
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Iceland |
op_relation |
Holdsworth, C., Tamraz, L., Gilfillan, S., Johnson, G., Boyce, A. <http://eprints.gla.ac.uk/view/author/1919.html> and Snæbjörnsdóttir, S. (2022) Tracking CO2 Injection, Migration and Fate at Carbfix2 Using Stable Isotopes. In: 16th International Conference on Greenhouse Gas Control Technologies (GHGT-16), Lyon, France, 23-27 Oct 2022, (doi:10.2139/ssrn.4278641 <https://doi.org/10.2139/ssrn.4278641>) |
op_doi |
https://doi.org/10.2139/ssrn.4278641 |
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SSRN Electronic Journal |
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1768389891357409280 |