Show simple item record

dc.contributor.authorFernø, Martin
dc.contributor.authorHauge, Lars Petter
dc.contributor.authorRognmo, Arthur Uno
dc.contributor.authorGauteplass, Jarand
dc.contributor.authorGraue, Arne
dc.date.accessioned2016-04-05T11:30:19Z
dc.date.available2016-04-05T11:30:19Z
dc.date.issued2015-09-18
dc.identifier.citationGeophysical Research Letters 2015, 42(18):7414-7419eng
dc.identifier.urihttp://hdl.handle.net/1956/11841
dc.description.abstractThe flow of CO2 in porous media is fundamental to many engineering applications and geophysical processes. Yet detailed CO2 flow visualization remains challenging. We address this problem via positron emission tomography using 11C nuclides and apply it to tight formations—a difficult but relevant rock type to investigate. The results represent an important technical advancement for visualization and quantification of flow properties in ultratight rocks and allowed us to observe that local rock structure in a layered, reservoir shale (K = 0.74 µdarcy) sample dictated the CO2 flow path by the presence of high-density layers. Diffusive transport of CO2 in a fractured sample (high-permeable sandstone) was also visualized, and an effective diffusion coefficient (Di = 2.2 · 10−8 m2/s) was derived directly from the dynamic distribution of CO2. During CO2 injection tests for oil recovery from a reservoir shale sample we observed a recovery factor of RF = 55% of oil in place without fracturing the sample.eng
dc.language.isoengeng
dc.publisherAgu publicationseng
dc.rightsAttribution CC BY-NC-NDeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/eng
dc.titleFlow visualization of CO2 in tight shale formations at reservoir conditionseng
dc.typeJournal articleeng
dc.date.updated2016-02-04T09:45:31Z
dc.rights.holderCopyright 2015 the authorseng
dc.type.versionpublishedVersioneng
bora.peerreviewedPeer reviewedeng
dc.type.documentJournal article
dc.identifier.cristinID1326867
dc.identifier.doi10.1002/2015GL065100eng
dc.source.issn0094-8276eng


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution CC BY-NC-ND
Except where otherwise noted, this item's license is described as Attribution CC BY-NC-ND