ACQUISITION REPORT Sequence-0458
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4128M458
  Preplot G01A4128
  Direction 18.0°
  SOL Date 20:29:44utc 26-May-2002
  EOL Date 22:07:36utc 26-May-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir WSW
   Swell Height 1.0 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 61.0 0.0 [meters]
   Bottomspeed  4.7 4.3 [knots]
   Featherangle port -1.7 port -4.4 [deg]
   Cable noise 0.0 0.0 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Port Volume 3542 3542  
   Stbd Volume 3542 3512  

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)   2938 - 2939  
   SOL Dummy Record(s) 2940 - 2949 2940 - 2949 20:28:27 - 20:29:37
   FSP Start of Line 2950 2950 20:29:44
   MSP      
   LSP End of Line 3685 3685 22:07:36
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4299 - 4300  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2950 - 3685 2950 - 3685 20:29:44-22:07:36 Infill 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m.    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1030mB. Low frequency strumming Str 6 channels 1841 - 1875. Occassional burst of swell noise present on records, approx 5-10 µB, affecting 5 % of traces.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2938 - 3367 2938 - 3367 1 1864  
  3368 - 4300 3368 - 4300 2 1865  
Stream 2
   Shot(s) Files Deck Reel Remark
  2938 - 3367 2938 - 3367 3 1864  
  3368 - 4300 3368 - 4300 4 1865  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 337, 349, 1553, 791 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
ALL     ALL 353, 377, 744, 2764 Killed traces  
2965-2988     2965-2988 51-67 Bird depth out of spec Bird C1-4 max depth 11.2m
2967-2995     2967-2995 75-91 Bird depth out of spec Bird C1-5 max depth 11.2m
2982-2997     2982-2997 99-115 Bird depth out of spec Bird C1-6 max depth 9.8m
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1-5 Bird depth out of spec Bird C1-1 intermittently deep to 8.2m
3086-3099     3086-3099 611-627 Bird depth out of spec Bird C2-12
3100-3120     3100-3120 1075-1091 Bird depth out of spec Bird C3-16
3458-3473     3458-3473 1075-1091 Bird depth out of spec Bird C3-16
3559-3578     3559-3578 2931-2944 Bird depth out of spec Bird C8-17
Comment
Shot(s)     File(s) Trace(s) Type Remark
2950     2950 ALL Streamer noise Low frequency noise dt bend approx 10uB on SOL noise record


 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 22:27:11utc 26-May-2002