Converted wave seismic exploration &amp; static correction

Deng, Zhiwen; Xuefeng, Zou; Shu, Zhan; Xiaosong, Jiang; Guo, Yabin; Shitian, Cui; He, You; Ni, Yizhao; Zhao, Bin

doi:10.1190/1.1839704

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2022

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Cited by 3 publications

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“…In this way, information about the V s is extracted using P-to-S converted waves (i.e., Zhiwen et al, 2004). However, to obtain a stacked reflection section requires a complicated processing.…”

Section: Introductionmentioning

confidence: 99%

P and S reflection and P refraction: An integration for characterising shallow subsurface

Giustiniani

Tinivella

Accaino

2010

Journal of Applied Geophysics

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Section: Introductionmentioning

confidence: 99%

P and S reflection and P refraction: An integration for characterising shallow subsurface

Giustiniani

Tinivella

Accaino

2010

Journal of Applied Geophysics

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3D PS‐wave data processing technique and its application in Erdos basin, China

Guo

Xiaosong

Dai

et al. 2005

SEG Technical Program Expanded Abstracts 2005

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Direct shear-wave seismic survey in Sanhu area, Qaidam Basin, west China

et al. 2022

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The formation containing shallow gas clouds poses a major challenge for conventional P-wave seismic surveys in the Sanhu area, Qaidam Basin, west China, as it dramatically attenuates seismic P-waves, resulting in high uncertainty in the subsurface structure and complexity in reservoir characterization. To address this issue, we proposed a workflow of direct shear-wave seismic (S-S) surveys. This is because the shear wave is not significantly affected by the pore fluid. Our workflow includes acquisition, processing, and interpretation in calibration with conventional P-wave seismic data to obtain improved subsurface structure images and reservoir characterization. To procure a good S-wave seismic image, several key techniques were applied: (1) a newly developed S-wave vibrator, one of the most powerful such vibrators in the world, was used to send a strong S-wave into the subsurface; (2) the acquired 9C S-S data sets initially were rotated into SH-SH and SV-SV components and subsequently were rotated into fast and slow S-wave components; and (3) a surface-wave inversion technique was applied to obtain the near-surface shear-wave velocity, used for static correction. As expected, the S-wave data were not affected by the gas clouds. This allowed us to map the subsurface structures with stronger confidence than with the P-wave data. Such S-wave data materialize into similar frequency spectra as P-wave data with a better signal-to-noise ratio. Seismic attributes were also applied to the S-wave data sets. This resulted in clearly visible geologic features that were invisible in the P-wave data.

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Converted wave seismic exploration & static correction

Cited by 3 publications

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P and S reflection and P refraction: An integration for characterising shallow subsurface

P and S reflection and P refraction: An integration for characterising shallow subsurface

3D PS‐wave data processing technique and its application in Erdos basin, China

Direct shear-wave seismic survey in Sanhu area, Qaidam Basin, west China

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