Show simple item record

dc.contributor.authorLandrø, Martin
dc.contributor.authorZumberge, Mark A.
dc.date.accessioned2018-01-19T08:59:54Z
dc.date.available2018-01-19T08:59:54Z
dc.date.created2017-06-14T13:35:26Z
dc.date.issued2017
dc.identifier.citationInterpretation. 2017, 5 (2), T243-T257.nb_NO
dc.identifier.issn2324-8858
dc.identifier.urihttp://hdl.handle.net/11250/2478294
dc.description.abstractWe have developed a calibrated, simple time-lapse seismic method for estimating saturation changes from the CO2CO2-storage project at Sleipner offshore Norway. This seismic method works well to map changes when CO2CO2 is migrating laterally away from the injection point. However, it is challenging to detect changes occurring below CO2CO2 layers that have already been charged by some CO2CO2. Not only is this partly caused by the seismic shadow effects, but also by the fact that the velocity sensitivity for CO2CO2 change in saturation from 0.3 to 1.0 is significantly less than saturation changes from zero to 0.3. To circumvent the seismic shadow zone problem, we combine the time-lapse seismic method with time-lapse gravity measurements. This is done by a simple forward modeling of gravity changes based on the seismically derived saturation changes, letting these saturation changes be scaled by an arbitrary constant and then by minimizing the least-squares error to obtain the best fit between the scaled saturation changes and the measured time-lapse gravity data. In this way, we are able to exploit the complementary properties of time-lapse seismic and gravity data.nb_NO
dc.language.isoengnb_NO
dc.publisherSociety of Exploration Geophysicistsnb_NO
dc.titleEstimating saturation and density changes caused by CO2 injection at Sleipner - Using time-lapse seismic amplitude-vartiation-with-offset and time-lapse gravitynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumberT243-T257nb_NO
dc.source.volume5nb_NO
dc.source.journalInterpretationnb_NO
dc.source.issue2nb_NO
dc.identifier.doi10.1190/INT-2016-0120.1
dc.identifier.cristin1476046
dc.description.localcode© 2017 Society of Exploration Geophysicists and American Association of Petroleum Geologists. All rights reserved.nb_NO
cristin.unitcode194,64,90,0
cristin.unitnameInstitutt for geovitenskap og petroleum
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record