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Frequency-dependent spherical-wave reflection coefficient inversion in acoustic media; theory to practice

Yan Binpeng, Wang Shangxu, Ji Yongzhen, Xingguo Huang and Nuno V. da Silva
Frequency-dependent spherical-wave reflection coefficient inversion in acoustic media; theory to practice
Geophysics (July 2020) 85 (4): R425-R435

Abstract

As an approximation of the spherical-wave reflection coefficient (SRC), the plane-wave reflection coefficient does not fully describe the reflection phenomenon of a seismic wave generated by a point source. The applications of SRC to improve analyses of seismic data have also been studied. However, most of the studies focus on the time-domain SRC and its benefit to using the long-offset information instead of the dependency of SRC on frequency. Consequently, we have investigated and accounted for the frequency-dependent spherical-wave reflection coefficient (FSRC) and analyzed the feasibility of this type of inversion. Our inversion strategy requires a single incident angle using reflection data for inverting the density and velocity ratios, which is distinctly different from conventional inversion methods using amplitude variation with offset. Hence, this investigation provides an alternative approach for estimating media properties in some contexts, especially when the range of aperture of the reflection angles is limited. We apply the FSRC theory to the inversion of noisy synthetic and field data using a heuristic algorithm. The multirealization results of the inversion strategy are consistent with the feasibility analysis and demonstrate the potential of the outlined method for practical application.


ISSN: 0016-8033
EISSN: 1942-2156
Coden: GPYSA7
Serial Title: Geophysics
Serial Volume: 85
Serial Issue: 4
Title: Frequency-dependent spherical-wave reflection coefficient inversion in acoustic media; theory to practice
Affiliation: China University of Petroleum at Karamay, Department of Petroleum, Karamay, China
Pages: R425-R435
Published: 20200701
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 19
Accession Number: 2020-059294
Categories: Applied geophysicsEconomic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N43°30'00" - N53°30'00", E121°30'00" - E135°00'00"
Secondary Affiliation: China University of Petroleum Beijing, CHN, ChinaSinopec Institute of Geophysical Prospecting Technology, CHN, ChinaUniversity of Bergen, NOR, NorwayTotal E&P UK, GBR, United Kingdom
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 2020
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