ACQUISITION REPORT Sequence-0401
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4144A401
  Preplot G01A4144
  Direction 198.0°
  SOL Date 17:39:57utc 03-May-2002
  EOL Date 19:22:22utc 03-May-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir NE
   Swell Height 1.0 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 46.3 55.0 [meters]
   Bottomspeed  4.8 4.6 [knots]
   Featherangle sb +0.1 0.0 [deg]
   Cable noise 7.55 41.0 [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)   4211 - 4210  
   SOL Dummy Record(s) 4209 - 4180 4209 - 4180 17:36:12 - 17:39:49
   FSP Start of Line 4179 4179 17:39:57
   MSP      
   LSP End of Line 3405 3405 19:22:22
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1468 - 1467  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4179 - 3418 4179 - 3418 17:39:57-19:19:12 Prime 16 Valid Turning to avoid rig
    3418 - 3405 3418 - 3405 19:19:12-19:22:22 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m.    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1036mB. Low frequency strumming Str 6 channels 1841 - 1875. Occassional burst of swell noise present on records, Turn noise at EOL noise records    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4211 - 3782 4211 - 3782 1 1714  
  3781 - 1467 3781 - 1467 2 1715  
Stream 2
   Shot(s) Files Deck Reel Remark
  4211 - 3782 4211 - 3782 4 1714  
  3781 - 1467 3781 - 1467 3 1715  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 744, 2764 Killed traces  
ALL     ALL 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1797, 1532 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
3845     3845 ALL Gun autofire Gun 2-1 at 7700 ms after aimpoint
3757-3738     3757-3738 2675-2691 Bird depth out of spec Bird C8-6, max depth 10.1m
3747     3747 ALL Gun autofire Gun 2-1 at 5250 ms after aimpoint
3745     3745 ALL Autofire Gun(s) 2-1
3738-3733     3738-3733 2699-2715 Bird depth out of spec Bird C8-7, max depth 9.5m
3729     3729 ALL Gun autofire Gun 2-1 at 7000 ms after aimpoint
3452-3405     3452-3405 1-178 Streamer noise Low frequency noise dt turn approx >60uB
3452-3405     3452-3405 369-524 Streamer noise Low frequency noise dt turn approx >60uB
3452-3405     3452-3405 737-911 Streamer noise Low frequency noise dt turn approx >60uB
3452-3405     3452-3405 1105-1257 Streamer noise Low frequency noise dt turn approx >60uB
3452-3405     3452-3405 1473-1608 Streamer noise Low frequency noise dt turn approx >60uB
3452-3405     3452-3405 1841-1972 Streamer noise Low frequency noise dt turn approx >60uB
3452-3405     3452-3405 2209-2292 Streamer noise Low frequency noise dt turn approx >60uB
3452-3405     3452-3405 2577-2665 Streamer noise Low frequency noise dt turn approx >60uB
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1316 Fails PS test Fails PS test
ALL     ALL 1-17, 20, 22, 24, 369-385, 389-390, 392, 1105-1117, 1122-1126, 1128-1135, 1473-1474, 1476, 1480-1484, 1487, 1489, 1841-1856, 1860-1861, 1866, 2209-2226, 2229-2232, 2577, 2582, 2584-2589, 2591-2593, 2601-2602 Slope alarm > 5% of total line
4076     4076 ALL Gun timing error Gun 5-2 error (ms) : 1.7
3867-3853     3867-3853 2283-2299 Bird depth out of spec Bird C7-5
3863-3846     3863-3846 2307-2323 Bird depth out of spec Bird C7-6
3827-3817     3827-3817 2259-2275 Bird depth out of spec Bird C7-4
3817-3803     3817-3803 2675-2691 Bird depth out of spec Bird C8-6
3766-3753     3766-3753 2651-2667 Bird depth out of spec Bird C8-5
Comment
Shot(s)     File(s) Trace(s) Type Remark
3514     3514 ALL Turning Starting to turn for rig


 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 06:07:03utc 14-May-2002