Large releases from CO2 storage reservoirs: analogs, scenarios,and modeling needs

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While the purpose of geologic storage in deep salineformations is to trap greenhouse gases underground, the potential existsfor CO2 to escape from the target reservoir, migrate upward alongpermeable pathways, and discharge at the land surface. In this paper, weevaluate the potential for such CO2 discharges based on the analysis ofnatural analogs, where large releases of gas have been observed. We areparticularly interested in circumstances that could generate sudden,possibly self-enhancing release events. The probability for such eventsmay be low, but the circumstances under which they occur and thepotential consequences need to be evaluated in order to designappropriate site-selection and risk-management strategies. ... continued below

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Birkholzer, Jens; Pruess, Karsten; Lewicki, Jennifer; Rutqvist,Jonny; Tsang, Chin-Fu & Karimjee, Anhar September 1, 2005.

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Description

While the purpose of geologic storage in deep salineformations is to trap greenhouse gases underground, the potential existsfor CO2 to escape from the target reservoir, migrate upward alongpermeable pathways, and discharge at the land surface. In this paper, weevaluate the potential for such CO2 discharges based on the analysis ofnatural analogs, where large releases of gas have been observed. We areparticularly interested in circumstances that could generate sudden,possibly self-enhancing release events. The probability for such eventsmay be low, but the circumstances under which they occur and thepotential consequences need to be evaluated in order to designappropriate site-selection and risk-management strategies. Numericalmodeling of hypothetical test cases is suggested to determine criticalconditions for large CO2 releases, to evaluate whether such conditionsmaybe possible at designated storage sites, and, if applicable, toevaluate the potential impacts of such events as well as designappropriate mitigation strategies.

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  • GHGT-8 Conference 2006, Trondheim, Norway,2006

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  • Report No.: LBNL--58883
  • Grant Number: DE-AC02-05CH11231
  • Grant Number: EPA:G4W009
  • Office of Scientific & Technical Information Report Number: 923440
  • Archival Resource Key: ark:/67531/metadc897395

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  • September 1, 2005

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  • Sept. 27, 2016, 1:39 a.m.

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  • Sept. 29, 2016, 3:03 p.m.

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Birkholzer, Jens; Pruess, Karsten; Lewicki, Jennifer; Rutqvist,Jonny; Tsang, Chin-Fu & Karimjee, Anhar. Large releases from CO2 storage reservoirs: analogs, scenarios,and modeling needs, article, September 1, 2005; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc897395/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.