Imaging the Earth’s Interior

Imaging the Earth’s Interior


1 Introduction to Imaging
1.1 Exploding Reflectors
1.2 Wave Extrapolation as a 2-D Filter
1.3 Four Wide-Angle Migration Methods
1.4 The Physical Basis
1.5 The Paraxial Wave Equation
1.6 Mastery of 2-D Fourier Techniques
1.7 Sample Programs

2 Why Time and Space ?
2.1 Wave-Extrapolation Equations
2.2 Finite Differencing
2.3 Monochromatic Wave Programs
2.4 Splitting and Full Separation
2.5 Recursive Dip Filters
2.6 Retarded Coordinates
2.7 Finite Differencing in ( t , x , z )-Space
2.8 Introduction to St ability

3 Offset, Another Dimension
3.1 Absorption and a Little Focusing
3.2 Introduction to Dip
3.3 Survey Sinking with the DSR Equation
3.4 The Meaning of the DSR Equation
3.5 Stacking and Velocity Analysis
3.6 Migration with Velocity Estimation
3.7 Lateral Velocity Variation in Bigger Doses

4 The Craft of Wavefield Extrapolation
4.1 Physical and Cosmetic Aspects of Wave Extrapolation
4.2 Anisotropy Dispersion and Wave-Migration Accuracy
4.3 Frequency Dispersion and Wave-Migration Accuracy
4.4 Absorbing Sides
4.5 Tuning up Fourier Migrations
4.6 Impedance
4.7 Accuracy – the Contractor’s View
4.8 The Bulletproofing of Muir and Godfrey

5 Some Frontiers
5.1 Radial Traces
5.2 Slant Stack
5.3 Snell Waves and Skewed Coordinates
5.4 Interval Velocity by Linear Moveout
5.5 Multiple Reflection – Current Practice
5.6 Multiple Reflection – Prospects
5.7 Profile Imaging
5.8 Predictions for the Next Decade

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