ACQUISITION REPORT Sequence-0425
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4096K425
  Preplot G01A4096
  Direction 198.0°
  SOL Date 00:04:00utc 11-May-2002
  EOL Date 01:39:01utc 11-May-2002
 Attributes:  
   Wind Force 12.0 [knots] Dir WSW
   Swell Height 1.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 90 [avg]  
       
  SOL EOL  
   Waterdepth 47.0 52.0 [meters]
   Bottomspeed  4.3 4.6 [knots]
   Featherangle sb +2.5 sb +3.7 [deg]
   Cable noise 14.5 11.6 [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)   4209 - 4208  
   SOL Dummy Record(s) 4207 - 4178 4207 - 4178 15:57:32 - 00:03:52
   FSP Start of Line 4177 4177 00:04:00
   MSP      
   LSP End of Line 3490 3490 01:39:01
   EOL Dummy Record(s)      
   EOL Noise Record(s)   3489 - 3488  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4177 - 3490 4177 - 3490 00:04:00-01:39:01 Infill 16 Valid Line aborted dt coverage
 Remarks:      
   Navigation Streamer depth 7m.    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1029mB. Low frequency strumming Str 6 channels 1841 - 1875. Occassional burst of swell noise present on records,approx 30 µB, affecting 5-10 % of traces.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4209 - 3780 4209 - 3780 1 1792  
  3779 - 3489 3779 - 3489 2 1793  
Stream 2
   Shot(s) Files Deck Reel Remark
  4209 - 3780 4209 - 3780 3 1792  
  3779 - 3489 3779 - 3489 4 1793  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 744, 2764    
ALL     ALL 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 337, 349, 1553, 791 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
3866-3859     3866-3859 2651-2667 Bird depth out of spec Bird C8-5, max depth 9.3m
3819-3809     3819-3809 419-435 Bird depth out of spec Bird C2-4, max depth 9.5m
3751-3740     3751-3740 51-67 Bird depth out of spec Bird C1-4, max depth 9.8m
3688-3682     3688-3682 539-555 Bird depth out of spec Bird C2-9, max depth 9.4m
3685-3665     3685-3665 563-579 Bird depth out of spec Bird C2-10,max depth 9.9m
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 1316 Fails PS Fails Ps
ALL     ALL 1-20, 22-25, 369-385, 387-393, 405, 1105-1117, 1119, 1121-1126, 1128-1131, 1133, 1135, 1473-1485, 1487, 1489, 1493, 1841-1857, 1860-1865, 1873, 2209-2227, 2229-2232, 2236, 2239, 2577-2578, 2584-2589, 2591-2594, 2601-2602 Slope alarm > 5% of total line
4087-3489     4087- ALL Gun timing error Gun 2-1 error (ms) : -2.0
3880-3866     3880-3866 2283-2299 Bird depth out of spec Bird C7-5
3875-3858     3875-3858 2331-2347 Bird depth out of spec Bird C7-7
3873-3862     3873-3862 2627-2643 Bird depth out of spec Bird C8-4
3869-3847     3869-3847 2355-2371 Bird depth out of spec Bird C7-8
3832-3813     3832-3813 27-43 Bird depth out of spec Bird C1-3
3826-3813     3826-3813 51-67 Bird depth out of spec Bird C1-4
3818-3805     3818-3805 443-459 Bird depth out of spec Bird C2-5
3754-3731     3754-3731 467-483 Bird depth out of spec Bird C2-6
3742-3723     3742-3723 75-91 Bird depth out of spec Bird C1-5
3732-3718     3732-3718 491-507 Bird depth out of spec Bird C2-7
3703-3687     3703-3687 515-531 Bird depth out of spec Bird C2-8
3702-3689     3702-3689 539-555 Bird depth out of spec Bird C2-9
3697-3681     3697-3681 99-115 Bird depth out of spec Bird C1-6
3553-3541     3553-3541 147-163 Bird depth out of spec Bird C1-8
Comment
Shot(s)     File(s) Trace(s) Type Remark


 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 02:08:17utc 11-May-2002