ACQUISITION REPORT Sequence-0468
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4832A468
  Preplot G01A4832
  Direction 198.0°
  SOL Date 16:25:53utc 04-Jun-2002
  EOL Date 22:13:57utc 04-Jun-2002
 Attributes:  
   Wind Force 8.0 [knots] Dir W
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 97 [avg]  
       
  SOL EOL  
   Waterdepth 73.0 232.0 [meters]
   Bottomspeed  20.0 4.6 [knots]
   Featherangle port -4.7 sb +3.5 [deg]
   Cable noise 5.08 5.09 [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)   4220 - 4219  
   SOL Dummy Record(s) 4218 - 4209 4218 - 4209 16:24:30 - 16:25:44
   FSP Start of Line 4208 4208 16:25:53
   MSP      
   LSP End of Line 1747 1747 22:13:57
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1746 - 1745  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4208 - 1747 4208 - 1747 16:25:53-22:13:57 Prime 14 Valid  
 Remarks:      
   Navigation Streamer depth 7.0m    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 10 mB. Low frequency strumming Str 6 channels 1841 - 1875.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4220 - 3791 4220 - 3791 1 1897  
  3790 - 3361 3790 - 3361 2 1898  
  3360 - 2931 3360 - 2931 1 1899  
  2930 - 2501 2930 - 2501 2 1900  
  2500 - 2071 2500 - 2071 1 1901  
  2070 - 1745 2070 - 1745 2 1902  
Stream 2
   Shot(s) Files Deck Reel Remark
  4220 - 3791 4220 - 3791 3 1897  
  3790 - 3361 3790 - 3361 3 1898  
  3360 - 2931 3360 - 2931 4 1899  
  2930 - 2501 2930 - 2501 3 1900  
  2500 - 2071 2500 - 2071 4 1901  
  2070 - 1745 2070 - 1745 3 1902  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-5 Streamer depth Streamer depth out of spec, Bird C1-1 constantly deep to 13m (incorrect reading)
ALL     ALL- 353, 377, 744, 2446 Killed traces  
ALL     ALL 2577-2944 Killed traces Streamer 8 NTBP
ALL     ALL 1857, 2943 Noisy Trace(s)  
ALL     ALL 337, 1545, 350 Spiking Trace(s)  
3253     3253 ALL External header lost external header not recorded by recording control
2513-2444     2513-2444 1106-1179 Streamer noise Low frequency noise dt currents
2512-2464     2512-2464 1045-1096 Streamer noise Low frequency noise dt currents
2510-2449     2510-2449 741-807 Streamer noise Low frequency noise dt currents
2509-2439     2509-2439 1476-1575 Streamer noise Low frequency noise dt currents
2506-2465     2506-2465 2223-2270 Streamer noise Low frequency noise dt currents
2502-2443     2502-2443 304-443 Streamer noise Low frequency noise dt currents
2500-2454     2500-2454 9-66 Streamer noise Low frequency noise dt currents
2496-2440     2496-2440 1899-1938 Streamer noise Low frequency noise dt currents
2490-2444     2490-2444 2272-2321 Streamer noise Low frequency noise dt currents
2489-2410     2489-2410 75-468 Streamer noise Low frequency noise dt currents
2488-2401     2488-2401 838-878 Streamer noise Low frequency noise dt currents
2478-2401     2478-2401 1190-1256 Streamer noise Low frequency noise dt currents
2472-2422     2472-2422 455-499 Streamer noise Low frequency noise dt currents
2466-2392     2466-2392 1577-1620 Streamer noise Low frequency noise dt currents
2462-2363     2462-2363 1953-2047 Streamer noise Low frequency noise dt currents
2453-2448     2453-2448 2328-2427 Streamer noise Low frequency noise dt currents
2444-2372     2444-2372 500-593 Streamer noise Low frequency noise dt currents
2444-2350     2444-2350 1637-1715 Streamer noise Low frequency noise dt currents
2443-2354     2443-2354 146-209 Streamer noise Low frequency noise dt currents
2431-2356     2431-2356 894-962 Streamer noise Low frequency noise dt currents
2430-2351     2430-2351 1260-1357 Streamer noise Low frequency noise dt currents
Warning
Shot(s)     File(s) Trace(s) Type Remark
4203     4203 ALL Gun timing error Gun 2-1 error (ms) : -1.7
3629     3629 ALL Gun timing error Gun 2-1 error (ms) : -1.8
3565     3565 ALL Gun timing error Gun 2-1 error (ms) : -1.7
3239     3239 ALL Gun timing error Gun 2-1 error (ms) : -1.7
2825     2825 ALL Gun timing error Gun 2-1 error (ms) : -2.0
2633-2616     2633-2616 NONE Bird depth out of spec Bird C2-12 Bird C2-11
2573-2562     2573-2562 NONE Bird depth out of spec Bird C7-14
2514-2360     2514-2360 ALL Streamer bent noise Noise observed on all streamer d/t current change
2493-2480     2493-2480 NONE Bird depth out of spec Bird C1-3
2084-2065     2084-2065 NONE Bird depth out of spec Bird C2-11
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL NONE No bird comms Birds C1-4 C2-4 C8-18


 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 22:33:07utc 04-Jun-2002