publication . Article . 2008

Surface CO2 leakage during the first shallow subsurface CO2 release experiment

Lewicki, J.L.; Oldenburg, C.; Dobeck, L.; Spangler, L.;
Open Access English
  • Published: 25 Jun 2008
  • Publisher: eScholarship, University of California
  • Country: United States
A new field facility was used to study CO2 migration processes and test techniques to detect and quantify potential CO2 leakage from geologic storage sites. For 10 days starting 9 July 2007, and for seven days starting 5 August 2007, 0.1 and 0.3 t CO2 d-1, respectively, were released from a ~;100-m long, sub-water table (~;2.5-m depth) horizontal well. The spatio-temporal evolution of leakage was mapped through repeated grid measurements of soil CO2 flux (FCO2). The surface leakage onset, approach to steady state, and post-release decline matched model predictions closely. Modeling suggested that minimal CO2 was taken up by groundwater through dissolution, and C...
free text keywords: Earth Sciences
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