| No. |
Processing History |
Line 24 |
| 1 |
Format Conversion |
Extended record length using truncating sweep |
|
Record Length |
18 s |
|
Sample Interval |
0.002 s |
| 2 |
Amplitude Compensation |
AGC |
|
Window |
0.5 s |
| 3 |
Crooked-Line Geometry |
Yes |
| 4 |
Weathering Statics |
Interactive refraction modeling |
|
Weathering Velocity (2 layer solution) |
610 m/s |
| 5 |
Elevation Statics |
Yes |
|
Datum |
1200 m |
|
Replacement Velocity |
2700 m/s |
| 6 |
Deconvolution |
Designature in the frequency domain; Output: zero phase |
|
Pre-Whitening |
Amplitude: 0.1%, Phase: 0.01% |
|
Design Window |
(75 m: 0.4-13 s), (12050 m: 5.0-14 s) |
|
Application Window |
0-18 s |
| 7 |
Spectral Balance |
Zero phase in the frequency domain (multi-gate) |
|
Design Window 1 |
(75 m: 0.4-3.0 s), (12050 m: 3.7-8.025 s) |
|
Application Window 1 |
(0, 2.8 s)/(0, 7.025 s) |
|
Design Window 2 |
(75 m: 2.3-8.7 s), (12050 m: 7.025-11.35 s) |
|
Application Window 2 |
(2.9, 7.7 s)/(8.025, 10.35 s) |
|
Design Window 3 |
(75 m: 7.7-13.85 s), (12050 m: 10.35-14.675 s) |
|
Application Window 3 |
(8.7, 12.85 s)/(11.35, 13.675 s) |
|
Design Window 4 |
(75 m: 12.85-18 s), (12050 m: 13.675-18 s) |
|
Application Window 4 |
(13.85, 18 s)/(14.675, 18 s) |
|
Spectrum Smoother |
11 traces |
| 8 |
Pre-CDP Gather Corrections |
Trace balance (single gate) |
| 9 |
CDP Gather |
Yes |
| 10 |
Velocity Analysis |
Yes |
|
Coherency Spectra |
Interactive |
| 11 |
Residual Statics |
Yes |
|
Surface Consistant |
Automatic (shallow resolution) |
|
Window |
0.3-3 s |
|
Maximum Static |
+/- 0.02 s |
| 12 |
NMO Corrections |
Yes |
| 13 |
Mute |
Trace |
|
Offset/Time |
(195 m: 0 s), (200 m:0.55 s), (1800 m: 1.2 s), (6075 m: 4.5 s), (12150 m: 7 s)) |
| 14 |
CDP Stacking |
60 fold |
| 15 |
Noise Attenuation |
FX deconvolution |
|
Noise Addback |
30% |
| 16 |
Filter |
Zero phase bandpass in the frequency domain |
|
Time Variant |
Yes |
|
Time/Pass Band |
(0-2 s: 5,10,80,95 Hz), (3-5 s: 10,15,40,50 Hz), (6-12 s: 5,10,40,50 Hz), (16-18 s: 5,10,30,40 Hz) |
| 17 |
Migration |
Wave Equation-finite difference (stacking velocity field of 100%) |
| 18 |
Scaling |
Multiple gate balance |
|
Windows |
(0-3 s), (3-6 s), (6-18 s) |