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Combined positron emission tomography and computed tomography to visualize and quantify fluid flow in sedimentary rocks
Author(s) -
Fernø M. A.,
Gauteplass J.,
Hauge L. P.,
Abell G. E.,
Adamsen T. C. H.,
Graue A.
Publication year - 2015
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1002/2015wr017130
Subject(s) - tomography , positron emission tomography , positron emission , displacement (psychology) , geology , fluid dynamics , flow (mathematics) , visualization , materials science , physics , nuclear medicine , mechanics , optics , computer science , medicine , artificial intelligence , psychology , psychotherapist
Here we show for the first time the combined positron emission tomography (PET) and computed tomography (CT) imaging of flow processes within porous rocks to quantify the development in local fluid saturations. The coupling between local rock structure and displacement fronts is demonstrated in exploratory experiments using this novel approach. We also compare quantification of 3‐D temporal and spatial water saturations in two similar CO 2 storage tests in sandstone imaged separately with PET and CT. The applicability of each visualization technique is evaluated for a range of displacement processes, and the favorable implementation of combining PET/CT for laboratory core analysis is discussed. We learn that the signal‐to‐noise ratio (SNR) is over an order of magnitude higher for PET compared with CT for the studied processes.