ACQUISITION REPORT Sequence-0398
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4080B398
  Preplot G01A4080
  Direction 198.0°
  SOL Date 00:03:41utc 03-May-2002
  EOL Date 01:59:01utc 03-May-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir WNW
   Swell Height 1.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 47.0 55.0 [meters]
   Bottomspeed  4.7 4.6 [knots]
   Featherangle port -1.5 sb +1.5 [deg]
   Cable noise 6.3 6.0 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Port Volume 3542 3542  
   Stbd Volume 3542 3542  

Source Configuration
Source Position Inline Crossline Nominal Nom. Vol. Subarray Gun
Number   Offset [m] Offset [m] Depth [m] [inch ³] Count Count
1 STBD -345.0 25.0 -6.0 3542.0 3 24
2 PORT -345.0 -25.0 -6.0 3542.0 3 24

Streamer Configuration
Streamer Position Inline Crossline Nominal Length Type Group Channel Front-Tail
Number   Offset [m] Offset [m] Depth [m] [m]   Interval [m] Count  
1 STBD -520.0 350.0 -7.0 4600 Nessie-3 12.5 368 0001-0368
2 STBD -520.0 250.0 -7.0 4600 Nessie-3 12.5 368 0369-0736
3 STBD -520.0 150.0 -7.0 4600 Nessie-3 12.5 368 0737-1104
4 STBD -520.0 50.0 -7.0 4600 Nessie-3 12.5 368 1105-1472
5 PORT -520.0 -50.0 -7.0 4600 Nessie-3 12.5 368 1473-1840
6 PORT -520.0 -150.0 -7.0 4600 Nessie-3 12.5 368 1841-2208
7 PORT -520.0 -250.0 -7.0 4600 Nessie-3 12.5 368 2209-2576
8 PORT -520.0 -350.0 -7.0 4600 Nessie-3 12.5 368 2577-2944

Recording Configuration
Channel Descr. Recording Data RecLen Sample Chan Chan # Chan Chan # Filter
Set   Format Reduction [ss ¹] Int. [ms] In In Out Out Delay [ms]
1 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0036 0001-0036 0036 0001 - 0036 0.00
2 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0001-0368 0368 0001 - 0368 5.60
3 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0369-0736 0368 0369 - 0736 5.60
4 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0737-1104 0368 0737 - 1104 5.60
5 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1105-1472 0368 1105 - 1472 5.60
6 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1473-1840 0368 1473 - 1840 5.60
7 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1841-2208 0368 1841 - 2208 5.60
8 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 2209-2576 0368 2209 - 2576 5.60
9 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 2577-2944 0368 2577 - 2944 5.60

Production
  Shotpoint File Time [utc]
   SOL Noise Record(s)   4208 - 4206  
   SOL Dummy Record(s) 4205 - 4177 4205 - 4177 23:59:54 - 00:03:33
   FSP Start of Line 4176 4176 00:03:41
   MSP      
   LSP End of Line 3295 3295 01:59:01
   EOL Dummy Record(s)      
   EOL Noise Record(s)      
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4176 - 3295 4176 - 3295 00:03:41-01:59:01 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m.    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1039mB. High amplitutde low frequency noise d/t currents present on records, Side swipes present at record Low frequency strumming Str 6 1841 - 1875. Occassional burst of swell noise present on records, approx 20 µB, affecting 3-5 % of traces. SP 3370 start turning    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4208 - 3779 4208 - 3779 1 1701  
  3778 - 3349 3778 - 3349 2 1702  
  3348 - 3295 3348 - 3295 1 1703  
Stream 2
   Shot(s) Files Deck Reel Remark
  4208 - 3779 4208 - 3779 4 1701  
  3778 - 3349 3778 - 3349 3 1702  
  3348 - 3295 3348 - 3295 4 1703  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1797, 1532 Spiking Trace(s)  
ALL     ALL 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1857 Noisy Trace(s)  
ALL     ALL-3295 744, 2764 Killed traces  
3939-3922     3939-3922 2675-2691 Bird depth out of spec Bird C8-6, max. depth : 10.5m
3934-3928     3934-3928 2699-2715 Bird depth out of spec Bird C8-7, max. depth : 9.6m
3925-3917     3925-3917 2699-2715 Bird depth out of spec Bird C8-7, max. depth : 9.5m
3918-3911     3918-3911 2723-2739 Bird depth out of spec Bird C8-8, max. depth : 9.4m
3329-3295     3329-3295 1-75 Noisy Trace(s) noise on front of streamers due to turn
3329-3295     3329-3295 369-443 Noisy Trace(s) noise on front of streamers due to turn
3329-3295     3329-3295 737-811 Noisy Trace(s) noise on front of streamers due to turn
3329-3295     3329-3295 1105-1179 Noisy Trace(s) noise on front of streamers due to turn
3329-3295     3329-3295 1473-1547 Noisy Trace(s) noise on front of streamers due to turn
3329-3295     3329-3295 1841-1915 Noisy Trace(s) noise on front of streamers due to turn
3329-3295     3329-3295 2209-2283 Noisy Trace(s) noise on front of streamers due to turn
3329-3295     3329-3295 2577-2651 Noisy Trace(s) noise on front of streamers due to turn
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-20, 22-24, 369-385, 389-390, 405, 1105-1116, 1122-1123, 1125-1126, 1130-1131, 1135, 1473, 1481, 1484, 1841-1857, 1860-1862, 1864, 2209-2226, 2229, 2232, 2577-2578, 2581-2582, 2584-2589, 2591-2594, 2601-2602 Slope alarm > 5% of total line
3937-3928     3937-3928 2307-2323 Bird depth out of spec Bird C7-6
3928-3919     3928-3919 2723-2739 Bird depth out of spec Bird C8-8
3916-3905     3916-3905 2699-2715 Bird depth out of spec Bird C8-7
3904-3895     3904-3895 2723-2739 Bird depth out of spec Bird C8-8
3900-3888     3900-3888 2747-2763 Bird depth out of spec Bird C8-9
3722-3714     3722-3714 2355-2371 Bird depth out of spec Bird C7-8
3720-3700     3720-3700 2747-2763 Bird depth out of spec Bird C8-9
3715-3703     3715-3703 2379-2395 Bird depth out of spec Bird C7-9
3709-3699     3709-3699 2403-2419 Bird depth out of spec Bird C7-10
3663-3652     3663-3652 2307-2323 Bird depth out of spec Bird C7-6
3655-3646     3655-3646 2699-2715 Bird depth out of spec Bird C8-7
3654-3643     3654-3643 2675-2691 Bird depth out of spec Bird C8-6
Comment
Shot(s)     File(s) Trace(s) Type Remark
3370     3370 ALL Noisy Trace(s) noise on front of streamers due to turn


 List of used abbreviations:
     SOL/EOL  Start/End of line. 
     FSP/LSP  First/Last shotpoint of the line. 
     FCSP/LCSP  First/Last chargeable shotpoint
     MSP  Midnight (last) shotpoint of the day
     FGSP/LGSP  First/Last Good Shotpoint
     FOSP/LOSP  First/Last Overlap Shotpoint
     FSP/LSP R/O  First/Last Shotpoint Runout
   
     Deg  Degrees: e[0,360]
     rev  Revolutions
     utc  Universal Time Coordinated
     SPs  Shotpoints
     CMPs  Common midpoints
     NTBP  Not to be processed
     SI  Seismic interference
TRILOGY INFORMATION MANAGER - ACQUISITION REPORT - GENERATED 03:08:59utc 05-May-2002