| No. |
Processing History |
Line 2 |
| 1 |
Format Conversion |
Yes |
|
Demultiplexing |
Yes |
|
Record Length |
18 s |
|
Sample Interval |
0.004 s |
| 2 |
Crooked-Line Geometry |
2-D |
| 3 |
Amplitude Compensation |
AGC |
|
Window |
0.5 s |
| 4 |
Pre-Deconvolution Corrections |
Yes |
|
Minimum Phase |
Yes |
| 5 |
Deconvolution |
Designature minimum phase (in the frequency domain) |
|
Pre-Whitening |
Amplitude: 0.1%; Phase: 0.01% |
|
Output Spectrum |
5,10,60,64 |
|
Design Windows |
(150 m: 0.4-13 s);(12100 m: 5-14 s) |
|
Application Window |
0-18 s |
| 6 |
Spectral Balance |
Zero phase (in the frequency domain) |
|
(150 m) Design Window (4 items) |
(0.4-3.000 s); (2.300-8.700 s); (7.700-13.850 s); (12.850-18 s) |
|
(12100 m) Design Window (4 items) |
(3.7-8.025 s); (7.025-11.35 s); (10.35-14.675 s); (13.675-18 s) |
|
Near Offset Application Window(4 items) |
(0.0-2.800 s); (2.900-7.700 s); (8.700-12.850 s); (13.850-18 s) |
|
Far Offset Application Window(4 items) |
(0.0-7.025 s); (8.025-10.35 s); (11.35-13.675 s); (14.675-18 s) |
|
Spectrum |
5,10,60,64 |
| 7 |
CDP Gather |
Yes |
| 8 |
Elevation Statics |
Yes |
|
Datum |
850 m |
|
Replacement Velocity |
2900 m/s |
| 9 |
Weathering Statics |
Refraction correction |
| 10 |
Residual Statics |
Yes |
|
Surface Consistent |
Automatic |
|
Window |
0.4-1.9 s |
|
Maximum Static |
+/- 0.03 s |
| 11 |
Velocity Analysis |
Yes |
|
Coherency Spectra Time Zone |
0-3 s |
|
Constant Stacks Time Zone |
3-14 s |
| 12 |
NMO Corrections |
Yes |
| 13 |
Mute |
Trace |
|
Offset/Time |
(300 m: 0 s); (400 m: 0.3 s); (1650 m: 1 s); (2150 m: 1.2 s); (3050 m: 1.85 s); (6000 m: 1.95 s); (9000 m: 2.3 s); (12000 m: 2.5 s) |
| 14 |
CDP Stacking |
60 fold |
| 15 |
Noise Attenuation |
FX deconvolution |
|
Noise Addback |
30% |
| 16 |
Scaling |
Multiple gate AGC |
|
Time/Window |
(0-3 s: 0.5 s); (3-6 s:1 s) ; (6-18 s: 5 s) |
| 17 |
Migration |
Wave equation- finite difference (stacking velocities 100%) |
| 18 |
Filter |
Bandpass |
|
Time Variant |
Yes |
|
Time/Pass Band |
(0-2.5 s: 5,10,56,62 Hz); (3-10.5 s: 5,10,40,45 Hz); (10.5-13 s: 5,10,32,38 Hz); (13-18 s: 5,10,20,25 Hz) |
| 19 |
Scaling |
Multiple gate balance |