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dc.contributor.author변중무-
dc.date.accessioned2017-06-12T00:18:09Z-
dc.date.available2017-06-12T00:18:09Z-
dc.date.issued2015-09-
dc.identifier.citationGEOSCIENCES JOURNAL, v. 19, NO 3, Page. 441-448en_US
dc.identifier.issn1226-4806-
dc.identifier.issn1598-7477-
dc.identifier.urihttps://link.springer.com/article/10.1007/s12303-014-0053-3-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/27736-
dc.description.abstractTime-lapse crosswell seismic monitoring with virtual sources redatumed to the positions of the receivers installed in a horizontal well is an efficient method of monitoring the migration of the CO2 plume or lithological changes. Two horizontal wells and virtual sources can minimize the problems caused by the near-surface complexity and the variation in source position during monitoring. In traditional monitoring using P-waves, the change in the P-wave velocity (V-P) is affected not only by the injected CO2 but also by geological changes. Conversely, the S-wave velocity (V-S) is affected only by the geological changes in the reservoir because the S-wave does not propagate through the pore fluid. Consequently, monitoring using both the P- and S-waves gives more accurate and useful information on the target layers. In this study, we developed an effective monitoring method that not only detects the boundary of CO2 plumes but also identifies the cause of the velocity change; this method uses two horizontal wells and virtual sources. The V-P/V-S ratio obtained from the P- and S-wave velocity tomograms from the synthesized data clearly distinguished the cause of the velocity change and the velocity tomograms sets successfully described the velocity change due to CO2 plume injection or lithological changes. This method can also be used for enhanced oil recovery monitoring and, if a mode converted S-wave is used, it can be applied to marine surveys.en_US
dc.description.sponsorshipThis work was supported by the Human Resources Development program (No. 20134010200520) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy.en_US
dc.language.isoenen_US
dc.publisherGEOLOGICAL SOCIETY KOREAen_US
dc.subjectcrosswell monitoringen_US
dc.subjectCO2en_US
dc.subjectvirtual sourceen_US
dc.subjectVP/VS ratioen_US
dc.subjectredatumingen_US
dc.titleV-P/V-S monitoring of CO2 sequestration using virtual horizontal crosswell tomographyen_US
dc.typeArticleen_US
dc.relation.no3-
dc.relation.volume19-
dc.identifier.doi10.1007/s12303-014-0053-3-
dc.relation.page441-448-
dc.relation.journalGEOSCIENCES JOURNAL-
dc.contributor.googleauthorYu, Jeongmin-
dc.contributor.googleauthorByun, Joongmoo-
dc.contributor.googleauthorSeol, Soon Jee-
dc.relation.code2015012238-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING-
dc.identifier.pidjbyun-
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COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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