Steps Profile 3
1 Read SEGD data
2 Zero-time corrections and cross-correlation with the theoretical sweep
3 Vertical stacking (4 repeated sweep records)
4 Geometry setup (CMP spacing 10 m for both streamer and wireless data)
5 First-break picking
6 Trace edit
7 Surface-consistent refraction static corrections
8 Elevation static corrections (200 m, 5000 m/s)
9 Notch filter: 60 Hz
10 Predictive deconvolution (150 ms window and 24 ms gap)
11 Spectral balancing: 10-30-90-110 Hz
12 Band-pass filter: 10-25-110-130 Hz (time variant)
13 Median filters (2500 m/s, 5000 m/s)
14 AGC (300 ms)
15 Velocity analysis (constant velocity stacks - CVS)
16 Local crossdip correction
17 Surface-consistent residual static corrections (2 runs)
18 NMO corrections (40% stretch mute)
19 Stack (diversity)
20 FX-deconvolution
21 Balance amplitude
22 Migration (phase shift, 5000-6500 m/s)
23 Time-to-depth conversion (constant velocity, 6000 m/s)
24 Export for plotting and 3D visualizations