COCORP Montana 11

Start Date 7/18/90 End Date 7/22/90 Date of Startup 7/18/90
Contractor Amoco/Grant-Norpac Crew Number 45
COCORP Honcho Doug Nelson Startup Supervisor Doug Nelson Surface Coverage 22 km


PARAMETERS

Recording System SGR4 No. of Channels Around 500 Geophone Group Spacing 50 m Source Spacing 100 m Source/Nearest Receiver Offset 0
Push/Pull Shot Through the Spread Offend of Split Split Noise Reject Vibrator Power 100% Stacking Fold
Sampling Interval 4 ms Antialias Filter Sweep Freq. Start 10 hz Sweep Freq. End 80 hz Sweep Duration 30 hz
Total Record Time 50 sec Correlated Record Length 20 sec Upsweep or Downsweep Upsweep Number of Sweeps per VP 16 Notch Filter 60 hz


Geophone Array

Geophone Type SM-7 Natural Frequency of Geophone Number of Geophones per Station
Spacing Between Geophone Elements Weighting Scheme Total Geophone Array Length Linear


Source Array

Vibrator Type #18 P.W.
Primary Array
No. of Vibrators8 Spacing Between Vibrators Bumper to Bumper m Source Moveup Between Sweeps m
1st Vibrator starts (relative to the flag) m Array Source Array Length m
Backup Array
No. of Vibrators Spacing Between Vibrators m Source Moveup Between Sweeps m
1st Vibrator starts (relative to the flag) m Array Source Array Length m