ACQUISITION REPORT Sequence-0389
  Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4272A389
  Preplot G01A4272
  Direction 198.0°
  SOL Date 03:02:24utc 30-Apr-2002
  EOL Date 08:43:02utc 30-Apr-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir W
   Swell Height 1.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
Propellor pitch 95 [avg]  
       
  SOL EOL  
   Waterdepth 44.3 72.0 [meters]
   Bottomspeed  4.4 1.5 [knots]
   Featherangle sb +10.5 0.0 [deg]
   Cable noise 5.2 0.0 [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) 4215 4215  
SOL Dummy Record(s)      
FSP Start of Line 4184 4184 03:02:24
MSP      
LSP End of Line 1530 1530 08:43:02
EOL Dummy Record(s)      
EOL Noise Record(s) 1520 - 1519 1520 - 1519 08:44:25
 Line-segments:
SPs Files Times [utc] Type # CMPs Status Remarks
4184 - 1560 4184 -1560 03:02:24 - 08:36:04 Prime 16 Valid LGSP 1560 d/t turn noise.
1559 - 1530 1559 - 1530 08:36:13 - 08:43:02 Prime 16 Scratched NTBP due to turn to avoid rig
 Remarks:      
   Navigation Streamer depth 7m. Edit first half of all cables SP 2600-2310 due to bend noise on cables    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1031mB. Feather angle and EOL noise NA due to turn to avoid rig. No swell noise on line    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4215 - 3786 4215 - 3786 1 1656  
  3785 - 3356 3785 - 3356 2 1657  
  3355 - 2926 3355 - 2926 1 1658  
  2925 - 2496 2925 - 2496 2 1659  
  2495 - 2066 2495 - 2066 1 1660  
  2065 - 1636 2065 - 1636 2 1661  
  1635 - 1519 1635 - 1519 1 1662  
Stream 2
   Shot(s) Files Deck Reel Remark
  4215 - 3786 4215 - 3786 4 1656  
  3785 - 3356 3785 - 3356 3 1657  
  3355 - 2926 3355 - 2926 4 1658  
  2925 - 2496 2925 - 2496 3 1659  
  2495 - 2066 2495 - 2066 4 1660  
  2065 - 1636 2065 - 1636 3 1661  
  1635 - 1519 1635 - 1519 4 1662  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 744 Killed traces  
ALL     ALL 1476, 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1553, 1797, 2265, 2764 Spiking Trace(s)  
ALL     ALL 1857, 2827, 2871 Noisy Trace(s)  
2600-2310       1-185 Streamer noise Low frequency bend noise dt currents.
2600-2310       369-553 Streamer noise Low frequency bend noise dt currents.
2600-2310       737-921 Streamer noise Low frequency bend noise dt currents.
2600-2310       1105-1289 Streamer noise Low frequency bend noise dt currents.
2600-2310       1473-1657 Streamer noise Low frequency bend noise dt currents.
2600-2310       1841-2025 Streamer noise Low frequency bend noise dt currents.
2600-2310       2209-2393 Streamer noise Low frequency bend noise dt currents.
2600-2310       2577-2761 Streamer noise Low frequency bend noise dt currents.
1560-1530       1-105 Streamer noise High amplitude low frequency noise dt turn
1560-1530       369-473 Streamer noise High amplitude low frequency noise dt turn
1560-1530       737-841 Streamer noise High amplitude low frequency noise dt turn
1560-1530       1105-1209 Streamer noise High amplitude low frequency noise dt turn
1560-1530       1473-1577 Streamer noise High amplitude low frequency noise dt turn
1560-1530       1841-1945 Streamer noise High amplitude low frequency noise dt turn
1560-1530       2209-2313 Streamer noise High amplitude low frequency noise dt turn
1560-1530       2577-2681 Streamer noise High amplitude low frequency noise dt turn
Warning
Shot(s)     File(s) Trace(s) Type Remark
3329-3311       2675-2691 Bird depth out of spec Bird C8-6
2875-2863       443-459 Bird depth out of spec Bird C2-5
2819-2810       2603-2619 Bird depth out of spec Bird C8-3
2569-2551       2931-2944 Bird depth out of spec Bird C8-17
2128-2116       147-163 Bird depth out of spec Bird C1-8
2109-2088       147-163 Bird depth out of spec Bird C1-8
1935-1924       2259-2275 Bird depth out of spec Bird C7-4
1894-1875       2259-2275 Bird depth out of spec Bird C7-4
1718-1712       2259-2275 Bird depth out of spec Bird C7-4
1539-1531       2209-2213 Bird depth out of spec Bird C7-1
Comment
Shot(s)     File(s) Trace(s) Type Remark
3100-2900       ALL Ship Noise From abeam. Max level of 5 uBar of high fequency noise.
1579       ALL Line Information Starting STBD turn to avoid rig
1530       ALL Line Information Last recorded SP


 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 22:40:03utc 30-Apr-2002