| Multiwave Amplitude Compensation and Its Sensitivity Analysis to AVO Inversion in Viscoelastic Media |
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| 引用本文： | GuHanming ZhuGuangming 等. Multiwave Amplitude Compensation and Its Sensitivity Analysis to AVO Inversion in Viscoelastic Media[J]. 中国地质大学学报(英文版), 2002, 13(1): 86-90 |
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| 作者姓名： | GuHanming ZhuGuangming 等 |
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| 作者单位： | [1]DepartmentofGeophysics,ChinaUniversityofGeosciences,Wuhan430074 [2]InstituteofAppliedGeophysics,XianEngineeringCollege,Xian710054 |
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| 基金项目： | The study is supported by National Project 863 (No. 820-05-02-03). |
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| 摘 要： | We derive formulae of correction for multi-wave geometric spreading and absorption in lay-ered viscoelastic media,this provides the theoretical foundation for true amplitude compensation of field data and for our sensitivity analysis.The imaging matrix at a plane reflector between viscoelastic media can be determined in the frequency domain using linearized reflection coefficients through Born approxi-mation.We quantiqatively analyze the sensitivity by studying eigenvalues and eigenvectors of the imaging matrix.The results show that two linear combinations of petrophysical parameters can be determined from the multi-wave AVO inversion in the case of amplitude compensation.Multi-wave AVO contains the information of attenuation in the media.However,the sensitivity of multi-wave AVO inversion to at-tenuation is small.
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| 关 键 词： | 地震波 振幅偏低 粘弹性介质 灵敏度 振幅补偿 地震勘探 |
Multiwave Amplitude Compensation and Its Sensitivity Analysis to AVO Inversion in Viscoelastic Media |
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| Gu Hanming,Wang Jiaying,ZHU Guangming. Multiwave Amplitude Compensation and Its Sensitivity Analysis to AVO Inversion in Viscoelastic Media[J]. Journal of China University of Geosciences, 2002, 13(1): 86-90 |
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| Authors: | Gu Hanming Wang Jiaying ZHU Guangming |
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| Abstract: | We derive formulae of correction for multi-wave geometric spreading and absorption in layered viscoelastic media, this provides the theoretical foundation for true amplitude compensation of field data and for our sensitivity analysis. The imaging matrix at a plane reflector between viscoelastic media can be determined in the frequency domain using linearized reflection coefficients through Born approximation. We quantitatively analyze the sensitivity by studying eigenvalues and eigenvectors of the imaging matrix. The results show that two linear combinations of petrophysical parameters can be determined from the multi-wave AVO inversion in the case of amplitude compensation. Multi-wave AVO contains the information of attenuation in the media. However, the sensitivity of multi-wave AVO inversion to attenuation is small. |
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| Keywords: | viscoelastic media seismic multi-wave amplitude compensation AVO inversion sensi-tivity. |
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