Promax

1. SEG-D input (two format codes had been used: 8048,8058)
2. Re-sampling data at 4 ms
3. Band-pass filter: 6-9-58-62.5 Hz
4. Edit traces
5. Hand Statics: -20 ms
6. Load Geometry and CMP sorting fold: 6 or 16 or 24 (100m,37.5m,25m distance between shots)
7. Interactive Velocity Analysis
8. NMO Correction and Stack
9. Top mute
10. Minimum phase predictive deconvolution: decon operator length: 300 ms; prediction distance: 20 ms
11. Band pass filter: time and space-variant Ormsby band-pass filter
12. True Amplitude Recovery: basis for spherical spreading (1/dist)
13. Trace Mixing: trace mixing algorithm: weighted mix. 5 traces to mix over with trace weights 1,3,7,3,1
14. Time Scaling: Automatic Gain Control type of AGC scalar: normally 2000ms but sometimes 6000ms
15. Trace plotting in a Oyo Geospace plotter: plotter device 24 inch, bytes per scan 1184

Figure 6: BS98. MCS line BS20, stack.