Transect: Central Alberta Basement (CAT)

Processed By: Pulsonic
Date Processed: March 1993

Line 7 Migrated Section

Location: T: 42 R: 19-27 W4M
Shot Points: 119-1797

No. Processing History Line 7
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
 920 m

Replacement Velocity
 2900 m/s
9 Weathering Statics Refraction correction
10 Residual Statics Yes

Surface Consistent
 Automatic

Window
 0.6-1.8 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); (1500 m: 0.9 s);(2100 m: 1.2 s) (3550 m: 1.83 s); (6000 m: 2 s); (9000 m: 2.3 s); (12100 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

Other Formats Processed Comments
Structure Stack Yes
DMO Stack No