ACQUISITION REPORT Sequence-0428
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4400C428
  Preplot G01A4400
  Direction 198.0°
  SOL Date 13:05:57utc 11-May-2002
  EOL Date 14:31:15utc 11-May-2002
 Attributes:  
   Wind Force 0.0 [knots] $(wind_dir)
   Swell Height 1.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 69.0 93.0 [meters]
   Bottomspeed  4.7 4.6 [knots]
   Featherangle 0.0 sb +4.9 [deg]
   Cable noise 5.6 28.18 [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)   3341 - 3340  
   SOL Dummy Record(s) 3339 - 3310 3339 - 3310 13:02:05 - 13:05:50
   FSP Start of Line 3309 3309 13:05:57
   MSP      
   LSP End of Line 2660 2660 14:31:15
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1572 - 1571  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3309 - 2660 3309 - 2660 13:05:57-14:31:15 Reshoot 16 Valid  
 Remarks:      
   Navigation Streamer depth 7.0m    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1025mB. Low frequency strumming Str 6 channels 1841 - 1875. No swell on records. Side swipes present at record. SP 2750 start turning to avoid Rig.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3341 - 2912 3341 - 2912 2 1799  
  2911 - 1571 2911 - 1571 1 1800  
Stream 2
   Shot(s) Files Deck Reel Remark
  3341 - 2912 3341 - 2912 3 1799  
  2911 - 1571 2911 - 1571 4 1800  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 744, 2764 Killed Trace(s)  
ALL     ALL 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 337, 349, 791, 1553 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
2752     2752 2609-2623 Streamer noise something hit streamer
2741-2738     2741-2738 2630-2636 Streamer noise something hit streamer
2732     2732 2646-2650 Streamer noise something hit streamer
2705-2660     2705-2660 1-107 Streamer noise Bend noise
2705-2660     2705-2660 369-475 Streamer noise Bend noise
2705-2660     2705-2660 737-843 Streamer noise Bend noise
2705-2660     2705-2660 1105-1207 Streamer noise Bend noise
2705-2660     2705-2660 1473-1569 Streamer noise Bend noise
2705-2660     2705-2660 1841-1926 Streamer noise Bend noise
2694-2660     2694-2660 2209-2291 Streamer noise Bend noise
2693-2660     2693-2660 2577-2659 Streamer noise Bend noise
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1316 Fails PS Test  
ALL     ALL 1-20, 22-25, 369-385, 388-390, 392-393, 405, 1105-1106, 1108-1113, 1115, 1121-1138, 1144, 1147, 1473, 1480-1481, 1483-1489, 1496, 1508, 1841-1853, 1855-1857, 1860, 1862-1864, 1867, 1873, 1878, 1880, 2209-2227, 2229-2232, 2577-2578, 2580-2589, 2591-2592, 2602 Slope alarm > 5% of total line
3179     3179 ALL Gun timing error Gun 2-3 error (ms) : -1.1
2685-2675     2685-2675 2563-2576 Bird depth out of spec Bird C7-17
2671     2671 ALL Gun timing error Gun 2-3 error (ms) : -1.1
Comment
Shot(s)     File(s) Trace(s) Type Remark
2750     2750 ALL   Start turning to avoid 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 15:09:55utc 11-May-2002