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Permanent link (DOI): https://doi.org/10.7939/R36704

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CO2 rock physics: a laboratory study Open Access

Descriptions

Other title
Subject/Keyword
CO2
sequestration
velocity
attenuation
seismic
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Yam, Helen
Supervisor and department
Schmitt, Douglas (Physics)
Examining committee member and department
Chalaturnyk, Rick (Civil and Environmental Engineering)
Beamish, John (Physics)
Currie, Claire (Physics)
Department
Department of Physics
Specialization

Date accepted
2011-09-22T14:03:46Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
In any geological sequestration projects, monitoring and verification are essential components in ensuring storage integrity. Seismic methods are regarded as a feasible way to monitor the subsurface CO2 because of their sensitivity to a rock’s pore space content. Therefore understanding the effects of CO2 and its variability on seismic response is important. Ultrasonic pulse transmission measurements were conducted on a porous ceramic sample and on a Berea sandstone sample. P-and S-waveforms were collected under various pressures, temperatures, and fluid-type saturation. The wave velocity and attenuation under full CO2 saturation and under a constant differential pressure were analyzed. The presence of differing phase states and some phase transitions were notable from wave velocity and attenuation changes. Only the observed wave velocities of the porous ceramic sample were in good agreement with Biot’s modelled results. Generally, CO2’s density plays a more dominant role than its bulk modulus on controlling the P-wave velocity.
Language
English
DOI
doi:10.7939/R36704
Rights
License granted by Helen Yam (hyam@ualberta.ca) on 2011-09-19T02:21:01Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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