Pre‐stack multi‐angle three‐parameter synchronous inversion method

Wang, Yu-Mei; Wang, Xiping; Shen, Guoqiang

doi:10.1190/1.3603783

Cited by 2 publications

(2 citation statements)

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“…In our algorithm, the step length is 1. Fixed step length inversion methods in geophysics are widely used [25][26][27][28].…”

Section: Generalized Linear Inversion and Iterative Reweighted Least ...mentioning

confidence: 99%

A VTI anisotropic media inversion method based on the exact reflection coefficient equation

Li²,

Geng³

et al. 2022

Front. Phys.

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Anisotropy is widespread in the Earth’s crust, and VTI (vertical axis symmetry transverse isotropy) anisotropy is common due to stratigraphic pressure. Disregarding anisotropy leads to inaccurate inversion results in VTI media. To estimate accurate elastic parameters, the exact reflection coefficient equation of VTI media should be used. This equation is nonlinear and more accurate than the commonly used linear reflection coefficient equation. Although the inversion based on the VTI anisotropy exact reflection coefficient equation is a complex nonlinear inversion problem, it is still computable. Therefore, for VTI media, we derive the objective function combining Bayesian theory and use the iterative reweighted least squares method for a fast and stable solution. Adding Bayesian theory can improve the robustness of the algorithm. The accuracy and noise immunity of the method is tested with synthetic data. Finally, the method is applied on field data and obtains accurate elastic parameters. The results can provide an understanding of subsurface formations and serve as the base data for calculating fluid and fracture distribution.

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“…In our algorithm, the step length is 1. Fixed step length inversion methods in geophysics are widely used [25][26][27][28].…”

Section: Generalized Linear Inversion and Iterative Reweighted Least ...mentioning

confidence: 99%

A VTI anisotropic media inversion method based on the exact reflection coefficient equation

Li²,

Geng³

et al. 2022

Front. Phys.

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“…SEM images of salt freezing asphalt and original specimensThe ordinary performance test of the asphalt after salt freezing cyclesThe temperature sensitivity of asphalt after the salt freezing cycle. It is displayed that the temperature sensitivity of the asphalt[5] varied with the temperature change. It is an important index of asphalt that decides to workability and application in the pavement service.…”

mentioning

confidence: 99%

Research on the Microstructure and Performance of Asphalt after the Salt Freezing Cycle

Han

Cui

et al. 2014

AMM

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About more than 90% highway have adopted asphalt concrete pavement in China. A lot of quality problems appeared in the highway pavement due to freezing-thawing circulations under the condition of low temperature. The scanning electron microscope (SEM) was utilized to observe the microstructure of styrene-butadiene-styrene (SBS) modified asphalt and rubber powder modified asphalt before and after the salt freezing. Also three routine indicators (penetration, softening point and ductility) for the two kinds of asphalt were tested before and after the salt freezing. The analysis results showed that the temperature susceptibility of SBS modified asphalt and rubber powder modified asphalt were all increased and the high temperature performance and low temperature performance of both asphalt were reduced after the salt freezing cycles as the same time the performance of rubber modified asphalt after salt freezing cycle was superior to SBS modified asphalt by comparing the basic indicators of them.

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Pre‐stack multi‐angle three‐parameter synchronous inversion method

Cited by 2 publications

References 0 publications

A VTI anisotropic media inversion method based on the exact reflection coefficient equation

A VTI anisotropic media inversion method based on the exact reflection coefficient equation

Research on the Microstructure and Performance of Asphalt after the Salt Freezing Cycle

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