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Title: Borehole Seismic Monitoring of Injected CO2 at the Frio Site

Abstract

As part of a small scale sequestration test (about 1500 tonsof CO2) in a saline aquifer, time-lapse borehole seismic surveys wereconducted to aid in characterization of subsurface CO2 distribution andmaterial property changes induced by the injected CO2. A VSP surveydemonstrated a large increase (about 75 percent) in seismic reflectivitydue to CO2 injection and allowed estimation of the spatial extent of CO2induced changes. A crosswell survey imaged a large seismic velocitydecrease (up to 500 m/s) within the injection interval and provided ahigh resolution image of this velocity change which maps the subsurfacedistribution of CO2 between two wells. Numerical modeling of the seismicresponse uses the crosswell measurements to show that this small CO2volume causes a large response in the seismic reflectivity. This resultdemonstrates that seismic detection of small CO2 volumes in salineaquifers is feasible and realistic.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE. Assistant Secretary for Fossil Energy.Coal
OSTI Identifier:
925422
Report Number(s):
LBNL-60160
R&D Project: G20401; BnR: AA3010000; TRN: US200807%%347
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: 8th International Conference on Greenhouse GasControl Technologies Congress, Trondheim, Norway, 19-22 June2006
Country of Publication:
United States
Language:
English
Subject:
54; AQUIFERS; BOREHOLES; DISTRIBUTION; GREENHOUSES; MONITORING; REFLECTIVITY; RESOLUTION; SEISMIC DETECTION; SEISMIC SURVEYS; VELOCITY; CARBON DIOXIDE INJECTION

Citation Formats

Daley, Thomas M., Myer, Larry R., Hoversten, G.M., Peterson, JohnE., and Korneev, Valeri A.. Borehole Seismic Monitoring of Injected CO2 at the Frio Site. United States: N. p., 2006. Web.
Daley, Thomas M., Myer, Larry R., Hoversten, G.M., Peterson, JohnE., & Korneev, Valeri A.. Borehole Seismic Monitoring of Injected CO2 at the Frio Site. United States.
Daley, Thomas M., Myer, Larry R., Hoversten, G.M., Peterson, JohnE., and Korneev, Valeri A.. Fri . "Borehole Seismic Monitoring of Injected CO2 at the Frio Site". United States. doi:. https://www.osti.gov/servlets/purl/925422.
@article{osti_925422,
title = {Borehole Seismic Monitoring of Injected CO2 at the Frio Site},
author = {Daley, Thomas M. and Myer, Larry R. and Hoversten, G.M. and Peterson, JohnE. and Korneev, Valeri A.},
abstractNote = {As part of a small scale sequestration test (about 1500 tonsof CO2) in a saline aquifer, time-lapse borehole seismic surveys wereconducted to aid in characterization of subsurface CO2 distribution andmaterial property changes induced by the injected CO2. A VSP surveydemonstrated a large increase (about 75 percent) in seismic reflectivitydue to CO2 injection and allowed estimation of the spatial extent of CO2induced changes. A crosswell survey imaged a large seismic velocitydecrease (up to 500 m/s) within the injection interval and provided ahigh resolution image of this velocity change which maps the subsurfacedistribution of CO2 between two wells. Numerical modeling of the seismicresponse uses the crosswell measurements to show that this small CO2volume causes a large response in the seismic reflectivity. This resultdemonstrates that seismic detection of small CO2 volumes in salineaquifers is feasible and realistic.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Apr 21 00:00:00 EDT 2006},
month = {Fri Apr 21 00:00:00 EDT 2006}
}

Conference:
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