ACQUISITION REPORT Sequence-0393
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3968L393
  Preplot G01A3968
  Direction 198.0°
  SOL Date 15:34:51utc 01-May-2002
  EOL Date 16:24:59utc 01-May-2002
 Attributes:  
   Wind Force 3.0 [knots] Dir S
   Swell Height 0.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 49.0 50.0 [meters]
   Bottomspeed  4.4 4.5 [knots]
   Featherangle port -4.2 sb +1.9 [deg]
   Cable noise 5.8 5.4 [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)   4204 - 4203  
   SOL Dummy Record(s) 4202 - 4173 4202 - 4173 15:30:46 - 15:34:43
   FSP Start of Line 4172 4172 15:34:51
   MSP      
   LSP End of Line 3801 3801 16:24:59
   EOL Dummy Record(s)      
   EOL Noise Record(s)   3800 - 3799  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4172 - 3801 4172 - 3801 15:34:51-16:24:59 Infill 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m. Low frequency strumming Str 6 1841 - 1875    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1023mB. Bird 8-10 masked on External Header d/t erratic depth reading. Occassional burst of swell noise present on records, approx 20-50 µB, affecting 3-5 % of traces. 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
  4204 - 3800 4204 - 3800 1 1683  
Stream 2
   Shot(s) Files Deck Reel Remark
  4204 - 3800 4204 - 3800 3 1683  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1476, 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1553, 2265, 2764, 1797 Spiking Trace(s)  
ALL     ALL 1857, 2827, 2871 Noisy Trace(s)  
ALL     ALL- 744 Killed traces  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2771-2787 Erratic bird depth Bird C 8-10 Erratic depth reading
4173-4165     4173-4165 99-115 Bird depth out of spec Bird C1-6
4161-4147     4161-4147 123-139 Bird depth out of spec Bird C1-7
4136-4118     4136-4118 123-139 Bird depth out of spec Bird C1-7
3907-3895     3907-3895 51-67 Bird depth out of spec Bird C1-4
3901-3893     3901-3893 75-91 Bird depth out of spec Bird C1-5
Comment
Shot(s)     File(s) Trace(s) Type Remark


 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 03:08:55utc 05-May-2002