| TTI介质自适应聚焦束叠前深度偏移 |
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| 关键词:TTI media anisotropic ray tracing adaptive focused beam numerical examples |
| 基金项目:本文由“地球深部探测与矿产资源勘查”国家科技重大专项(编号: 2024ZD1002201)、国家自然科学基金项目(编号: 42174157)和鄂尔多斯市标志性创新团队项目(编号: TD20232305)联合资助。 |
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| 摘要: |
| Adaptive Focused Beam Migration Considering Prestack Depth |
| Adaptive focused beam migration is a new method for imaging seismic wavefields. The beam energy is focused through controlling the beam width using velocity information, which is advantageous for imaging complex geological structures. We propose an adaptive focused beam migration method for TTI media to increase the imaging quality of seismic wavefields in anisotropic media by introducing anisotropic ray-tracing equations based on the isotropic adaptive focused beam migration method. The results of a comparative analysis of the imaging of horizontal TTI media model shows that the proposed method is more accurate than the isotropic migration and VTI migration methods. The migration test on the subsag and complex fault TTI media models further verifies that the imaging effect of the proposed method for anisotropic complex geological structures is substantially more accurate than that of the isotropic migration method. |
| WU Changman,HAN Jianguang,CHEN Peng.2026.Adaptive Focused Beam Migration Considering Prestack Depth[J].Acta Geoscientica Sinica,47(2):433-441. |
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