ACQUISITION REPORT Sequence-0403
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4384A403
  Preplot G01A4384
  Direction 18.0°
  SOL Date 04:10:37utc 04-May-2002
  EOL Date 06:15:44utc 04-May-2002
 Attributes:  
   Wind Force 5.0 [knots] Dir NW
   Swell Height 0.5 [meters] Dir W
   Propellor rpm 122 [avg]  
   Propellor pitch 93 [avg]  
       
  SOL EOL  
   Waterdepth 102.1 81.0 [meters]
   Bottomspeed  4.5 4.8 [knots]
   Featherangle port -8.7 0.0 [deg]
   Cable noise 5.7 14.4 [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)   1654 - 1655  
   SOL Dummy Record(s) 1656 - 1685 1656 - 1685 04:06:35 - 04:10:29
   FSP Start of Line 1686 1686 04:10:37
   MSP      
   LSP End of Line 2600 2600 06:15:44
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4310 - 4311  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1686 - 2600 1686 - 2600 04:10:37-06:15:44 Prime 16 Valid LSP due to Rig Turn
 Remarks:      
   Navigation Streamer depth 7m    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1031mB. Low frequency strumming Str 6 channels 1841 - 1875. Occassional burst of swell noise present on records, approx 2-3 µB, affecting 5 % of traces.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1654 - 2083 1654 - 2083 1 1719  
  2084 - 2513 2084 - 2513 2 1720  
  2514 - 4311 2514 - 4311 1 1721  
Stream 2
   Shot(s) Files Deck Reel Remark
  1654 - 2083 1654 - 2083 3 1719  
  2084 - 2513 2084 - 2513 4 1720  
  2514 - 4311 2514 - 4311 3 1721  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1532, 337 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
ALL     ALL- 744, 2764 Killed traces  
2124-2132     2124-2132 419-435 Bird depth out of spec Bird C2-4 max depth 9.9m
2580-2600     2580-2600 1-50 Streamer noise Streamer noise due to turn to avoid rig
2580-2600     2580-2600 369-419 Streamer noise Streamer noise due to turn to avoid rig
2580-2600     2580-2600 737-787 Streamer noise Streamer noise due to turn to avoid rig
2580-2600     2580-2600 1105-1155 Streamer noise Streamer noise due to turn to avoid rig
2580-2600     2580-2600 1473-1523 Streamer noise Streamer noise due to turn to avoid rig
2580-2600     2580-2600 1841-1891 Streamer noise Streamer noise due to turn to avoid rig
2580-2600     2580-2600 2209-2259 Streamer noise Streamer noise due to turn to avoid rig
2580-2600     2580-2600 2577-2627 Streamer noise Streamer noise due to turn to avoid rig
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1316 PS Test Fails PS test
1828     1828 ALL Gun timing error Gun 5-2 error (ms) : -1.7
2127-2136     2127-2136 443-459 Bird depth out of spec Bird C2-5
2275     2275 ALL Gun timing error Gun 1-2 error (ms) : -1.7
2379-2384     2379-2384 467-483 Bird depth out of spec Bird C2-6
2517-2533     2517-2533 75-91 Bird depth out of spec Bird C1-5
Comment
Shot(s)     File(s) Trace(s) Type Remark
2530     2530 ALL Line Information Start port turn 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 03:12:19utc 05-May-2002