ACQUISITION REPORT Sequence-0141
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3648J141
  Preplot G01A3648
  Direction 198.0°
  SOL Date 09:58:19utc 22-Dec-2001
  EOL Date 11:10:58utc 22-Dec-2001
 Attributes:  
   Wind Force 8.0 [knots] Dir SW
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 51.0 54.0 [meters]
   Bottomspeed  4.4 4.1 [knots]
   Featherangle port -4.1 port -4.6 [deg]
   Cable noise 6.19 8.8 [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)   3472 - 3471  
   SOL Dummy Record(s) 3470 - 3441 3470 - 3441 09:54:12 - 09:58:11
   FSP Start of Line 3440 3440 09:58:19
   MSP      
   LSP End of Line 2930 2930 11:10:58
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1699 - 1698  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3440 - 3150 3440 - 3150 09:58:19-10:38:45 Infill 16 Valid  
    3149 - 2930 3149 - 2930 10:38:53-11:10:58 Infill 0 Scratched Scratched d/t swell noise on far offset
 Remarks:      
   Navigation Streamer depth 7m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1015mB. Str7 Bird 1 mask on External Header, occasionally deep 7.8 - 8.1m. Bird 8-18 mask on External Header, occasional bad communication. EOL noise plot not available    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3472 - 3043 3472 - 3043 1 596  
  3042 - 1698 3042 - 1698 2 597  
Stream 2
   Shot(s) Files Deck Reel Remark
  3472 - 3043 3472 - 3043 3 596  
  3042 - 1698 3042 - 1698 4 597  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1657, 2307, 2731 Spiking Trace(s)  
ALL     ALL 2871 Noisy Trace(s)  
3149-2930     3149-2930 ALL Swell Noise Scratched d/t swell noise on far offset
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1599, 2034   Fails Crossfeed
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 occasional deep 7.8-8.1
ALL     ALL 1-13, 16, 369-380, 737-752, 755, 758, 760-761, 763-764, 1105-1113, 1122-1126, 1128-1131, 1133, 1135, 1484, 1489, 1841-1850, 1852-1853, 1855-1856, 2209-2220, 2225, 2229, 2577, 2585-2588 Slope alarm > 5% of total line
Comment
Shot(s)     File(s) Trace(s) Type Remark
3140-3046     3140-3046 ALL Swell Noise Swell noise affecting 5% of traces, 6 uB ambient noise
3045-2930     3045-2930 ALL Swell Noise Swell noise affecting 10% of traces, 9 uB ambient noise


 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 11:30:21utc 22-Dec-2001