LAPSE:2023.34573
Published Article
LAPSE:2023.34573
A New Anelasticity Model for Wave Propagation in Partially Saturated Rocks
April 27, 2023
Elastic wave propagation in partially saturated reservoir rocks induces fluid flow in multi-scale pore spaces, leading to wave anelasticity (velocity dispersion and attenuation). The propagation characteristics cannot be described by a single-scale flow-induced dissipation mechanism. To overcome this problem, we combine the White patchy-saturation theory and the squirt flow model to obtain a new anelasticity theory for wave propagation. We consider a tight sandstone Qingyang area, Ordos Basin, and perform ultrasonic measurements at partial saturation and different confining pressures, where the rock properties are obtained at full-gas saturation. The comparison between the experimental data and the theoretical results yields a fairly good agreement, indicating the efficacy of the new theory.
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Keywords
anelasticity, P-wave velocity dispersion and attenuation, partial saturation, patchy saturation, squirt flow, ultrasonic measurements
Subject
Suggested Citation
Wu C, Ba J, Zhong X, Carcione JM, Zhang L, Ruan C. A New Anelasticity Model for Wave Propagation in Partially Saturated Rocks. (2023). LAPSE:2023.34573
Author Affiliations
Wu C: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
Ba J: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
Zhong X: Exploration and Development Research Institute of PetroChina Changqing Oilfield Company, Xi’an 710018, China
Carcione JM: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China; National Institute of Oceanography and Applied Geophysics—OGS, Geophysics, 34010 Trieste, Italy
Zhang L: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
Ruan C: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China; School of Mathematics and Statistics, Zhoukou Normal University, Zhoukou 466001, China [ORCID]
Ba J: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
Zhong X: Exploration and Development Research Institute of PetroChina Changqing Oilfield Company, Xi’an 710018, China
Carcione JM: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China; National Institute of Oceanography and Applied Geophysics—OGS, Geophysics, 34010 Trieste, Italy
Zhang L: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
Ruan C: School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China; School of Mathematics and Statistics, Zhoukou Normal University, Zhoukou 466001, China [ORCID]
Journal Name
Energies
Volume
14
Issue
22
First Page
7619
Year
2021
Publication Date
2021-11-15
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14227619, Publication Type: Journal Article
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LAPSE:2023.34573
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doi:10.3390/en14227619
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[v1] (Original Submission)
Apr 27, 2023
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Apr 27, 2023
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