Prestack migration - PowerPoint PPT Presentation

Comparison of Poststack MD Depth Slices

X (km). X (km). 10. 10. 8. 8. 6. 6. 4. 4. 6. 6. Y (km). Y (km). 8. 8. Comparison of Poststack MD Depth Slices. Kirchhoff Image. MD Image. 4. 4. 6. 6. 8. 8. 10. 10. 1. 1. Depth (km). Depth (km). 4. 4. Comparison of Prestack Migration and MD Images. X (km).

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708 views • 55 slides

Impact of MD on AVO Inversion

Impact of MD on AVO Inversion. Jianhua Yu University of Utah. Outline. Motivation. Methodology. Numerical Tests. Synthetic data. Field marine data. Conclusions. Prestack migration to generate the common offset data, CRGs, and angle gathers. AVO analysis or inversion (Shuey, 1985).

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548 views • 39 slides

Migration

Migration. Intuitive. Least Squares. Green’s Theorem. Migration. Prestack Migration. Question: Why Prestack when poststack migration seems good enough?. Answer: Poststack assumes layered medium assumption. . . +. s x. x g. . . . +.

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208 views • 4 slides

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