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• W4312247437 abstract "Young’s modulus and the Poisson ratio are critical for shale reservoir identification, and oil and natural gas detection since they are elastic parameters that can reflect the fracturing properties of subsurface rocks. The broadband inversion approach can make full use of the seismic ultralow-frequency information by combining it with the inversion results in the complex frequency domain. This plays an important role in the stability and reliability of the inversion, improving its resolution. Nevertheless, at present, the amplitude variation with offset (AVO) inversions of these parameters is mostly in the form of linear approximations, and there are few inversion methods of exact nonlinear equations or broadband. Considering that the nonlinear equation of reflection coefficient compared with the linear approximation has higher precision and fewer assumption conditions, and the low-frequency information of the complex frequency-domain inversion can improve the reliability of the inversion results, we derive an exact reflection coefficient equation for Young’s modulus, the Poisson ratio coefficient, and the density based on the exact Zoeppritz equation and apply it to the broadband complex domain nonlinear prestack inversion. Young’s modulus and the Poisson ratio coefficients estimated by the new inversion method provide a theoretical basis for evaluating the reservoir brittleness and compressibility, as well as a new approach for shale gas reservoir prediction and sweet spot identification. We tested the accuracy and rationality of this method with both synthetic and field data examples." @default.
• W4312247437 created "2023-01-04" @default.
• W4312247437 creator A5007085316 @default.
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• W4312247437 date "2023-01-01" @default.
• W4312247437 modified "2023-10-16" @default.
• W4312247437 title "Direct Exact Nonlinear Broadband Seismic Amplitude Variations With Offset Inversion for Young’s Modulus" @default.
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• W4312247437 doi "https://doi.org/10.1109/tgrs.2022.3231594" @default.
• W4312247437 hasPublicationYear "2023" @default.
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