Constraining the reservoir model of an injected CO2 plume with crosswell CASSM at the Frio-II brine plot

Journal Article · Tue Feb 15 04:00:00 EST 2011 · International Journal of Greenhouse Gas Control

DOI:https://doi.org/10.1016/j.ijggc.2011.03.002· OSTI ID:1019304

Daley, T M; Ajo-Franklin, J; Doughty, C A

Crosswell CASSM (continuous active-source seismic monitoring) data was acquired as part of the Frio-II brine pilot CO{sub 2} injection experiment. To gain insight into the CO{sub 2} plume evolution, we have integrated the 3D multiphase flow modeling code TOUGH2 with seismic simulation codes via a petrophysical model that predicts seismic velocity for a given CO{sub 2} saturation. Results of forward seismic modeling based on the CO{sub 2} saturation distribution produced by an initial TOUGH2 model compare poorly with the CASSM data, indicating that the initial flow model did not capture the actual CO{sub 2} plume dynamics. Updates to the TOUGH2 model required to better match the CASSM field data indicate vertical flow near the injection well, with increased horizontal plume growth occurring at the top of the reservoir sand. The CASSM continuous delay time data are ideal for constraining the modeled spatiotemporal evolution of the CO{sub 2} plume and allow improvement in reservoir model and estimation of CO{sub 2} plume properties.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Earth Sciences Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1019304
• Report Number(s): LBNL-4543E
• Journal Information: International Journal of Greenhouse Gas Control, Journal Name: International Journal of Greenhouse Gas Control; ISSN 1750-5836
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
BRINES
DISTRIBUTION
FLOW MODELS
INJECTION WELLS
MONITORING
MULTIPHASE FLOW
PLUMES
SAND
SATURATION
SIMULATION
VELOCITY