Angle Domain Direct Envelope Inversion Method for Strong Scattering Velocity and Density Estimation

Luo, Jungang; Wu, Ru‐Shan; Chen, Guoxin

doi:10.1109/lgrs.2019.2950471

Cited by 14 publications

(2 citation statements)

References 14 publications

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“…For the traditional initial model construction, logging data interpolation (Doyen et al, 1997;Liu et al, 2008) or velocity information (Al-Yahya and Kamal, 1989;Li et al, 2014;Zhao et al, 2019a, b) is usually used for modeling, while the inversion quality affects by well number or velocity field's information. To solve the problem of low-frequency missing, a seismic envelope inversion based on signal modulation theory is proposed for the initial model construction in full-waveform inversion (Wu et al, 2014;Luo et al, 2015;Chen et al, 2018;Luo et al, 2019Luo et al, , 2021Yang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Envelope-based constrained model for multiparameter pre-stack seismic inversion

Shan

Yang

et al. 2022

J Petrol Explor Prod Technol

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Pre-stack seismic inversion is an effective method to estimate multiparameter from seismic reflection data in the oil–gas reservoir exploration. In order to get a reliable inverted parameter result, a constrained model is commonly used to reduce the multi-solution in the seismic inversion. However, it is hard to get an appropriate constrained model by conventional well-log data interpolation or velocity field in offshore oil–gas exploration with sparse wells. Envelope inversion has been successfully applied to get a good initial model with low-frequency components in full-waveform inversion. In order to fully exploit the rich information contained in seismic data, we introduce envelope inversion into background modeling based on convolution theory and propose a multiparameter pre-stack seismic inversion with envelope prior constraint. Both inversion results of the model and field data indicate the effectiveness and adaptability of the proposed method in multiparameter estimation.

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Section: Introductionmentioning

confidence: 99%

Envelope-based constrained model for multiparameter pre-stack seismic inversion

Shan

Yang

et al. 2022

J Petrol Explor Prod Technol

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“…The signed DEI method makes up for this disadvantage and improves the inversion quality of deep structures by adding polarity to envelope calculation [20]. Other improvements of the DEI method include multi-offset DEI strategy [21], joint instantaneous amplitude and phase DEI [22], and angle domain DEI [23]. In the above DEI methods, the calculation algorithm of the envelope field can be classified into two categories.…”

Section: Introductionmentioning

confidence: 99%

Wavefield Decomposition-Based Direct Envelope Inversion and Structure-Guided Perturbation Decomposition for Salt Building

et al. 2021

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Due to the large-scale and strong perturbation features of salt bodies, it is very difficult to complete a good salt building with the conventional full waveform inversion (FWI) method without low-frequency data and prior information. The direct envelope inversion (DEI) method is quite effective for salt building when seismic data lack low-frequency information. However, in the current DEI studies, the calculation of the envelope field, which needs a nonlinear envelope operator, does not consider the influences of wavefield overlapping, and the inversion quality of subsalt areas needs further improvements. In this paper, we analyze the effects of wavefield overlapping on envelope field calculation and propose a new envelope field calculation method based on wavefield decomposition. Then, we propose a wavefield decomposition-based direct envelope inversion (WDDEI) method, in which the gradient is calculated using the new envelope field. To improve the inversion quality of subsalt structures, we propose a structure-guided perturbation decomposition method, which can separate the strong scattering salt information from the DEI results with the help of reverse time migration images. Finally, numerical tests are conducted on a modified SEG/EAGE salt model to demonstrate the effectiveness and the antinoise performance of the proposed method.

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Asymptotic Full Wave-Form Inversion in the Image Domain

Protasov

2024

Lecture Notes in Computer Science

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Angle Domain Direct Envelope Inversion Method for Strong Scattering Velocity and Density Estimation

Cited by 14 publications

References 14 publications

Envelope-based constrained model for multiparameter pre-stack seismic inversion

Envelope-based constrained model for multiparameter pre-stack seismic inversion

Wavefield Decomposition-Based Direct Envelope Inversion and Structure-Guided Perturbation Decomposition for Salt Building

Asymptotic Full Wave-Form Inversion in the Image Domain

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