ACQUISITION REPORT Sequence-0844
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170C
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A7432PMA844
  Preplot G01A7432MA
  Direction 108.0°
  SOL Date 11:08:34utc 07-May-2002
  EOL Date 11:38:45utc 07-May-2002
 Attributes:  
   Wind Force 0.0 [knots] $(wind_dir)
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 53.0 54.8 [meters]
   Bottomspeed  4.6 4.7 [knots]
   Featherangle port -0.8 sb +2.3 [deg]
   Cable noise 4.4 4.88 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Port Volume 3542 3542  
   Stbd Volume 3347 3347  

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 8
2 PORT -345.0 -25.0 -6.0 3542.0 3 8

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)   3022 - 3021  
   SOL Dummy Record(s) 3020 - 2991 3020 - 2991 11:04:15 - 11:08:25
   FSP Start of Line 2990 2990 11:08:34
   MSP      
   LSP End of Line 2764 2764 11:38:45
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2763 - 2762  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2990 - 2764 2990 - 2764 11:08:34-11:38:45 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m, NAVRT External Header Block defines Job No. 9170C, Gun Array 5 - 4 Stopped firing at SP 2940    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1028mB. 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
  3022 - 2763 3022 - 2763 2 10044  
Stream 2
   Shot(s) Files Deck Reel Remark
  3022 - 2763 3022 - 2763 4 10044  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 337, 349, 791, 1553 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
ALL     ALL- 744, 2764 Killed traces  
2978-2973     2978-2973 2259-2275 Bird depth out of spec Bird C7-4, Max depth 9.4m
2920     2920 ALL Gun timing error Gun 5-2 error (ms) : -2.2
2850-2840     2850-2840 51-67 Bird depth out of spec Bird C1-4, Max depth 9.8m
2850-2839     2850-2839 419-435 Bird depth out of spec Bird C2-4, Max depth 9.8m
2848-2839     2848-2839 395-411 Bird depth out of spec Bird C2-3, Max depth 9.4m
2847-2840     2847-2840 27-43 Bird depth out of spec Bird C1-3, Max depth 9.4m
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1316 PS Test Fails PS test
ALL     ALL 1-2, 4-13, 369-380, 383, 1105, 1109-1113, 1122-1123, 1125-1126, 1130-1133, 1135, 1841-1850, 1852, 1855-1856, 2209-2220, 2223-2224, 2577 Slope alarm > 5% of total line
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- ALL Gun disabled Gun 5-4. Source volume at shot 2940 : 3347 cu.in.


 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 13:18:02utc 15-May-2002