ACQUISITION REPORT Sequence-0884
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170C
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A5232JCO884
  Preplot G01A5232
  Direction 85.0°
  SOL Date 14:25:48utc 02-Jul-2002
  EOL Date 15:31:09utc 02-Jul-2002
 Attributes:  
   Wind Force 22.0 [knots] Dir NW
   Swell Height 1.5 [meters] $(swell_dir)
   Propellor rpm 122 [avg]  
   Propellor pitch 72 [avg]  
       
  SOL EOL  
   Waterdepth 65.2 90.4 [meters]
   Bottomspeed  4.9 4.6 [knots]
   Featherangle port -8.6 port -12.7 [deg]
   Cable noise 3.2 14.5 [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 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 -520.0 250.0 -7.0 4600 Nessie-3 12.5 368 0001-0368
2 STBD -520.0 150.0 -7.0 4600 Nessie-3 12.5 368 0369-0736
3 STBD -520.0 50.0 -7.0 4600 Nessie-3 12.5 368 0737-1104
4 PORT -520.0 -50.0 -7.0 4600 Nessie-3 12.5 368 1105-1472
5 PORT -520.0 -150.0 -7.0 4600 Nessie-3 12.5 368 1473-1840
6 PORT -520.0 -250.0 -7.0 4600 Nessie-3 12.5 368 1841-2208

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

Production
  Shotpoint File Time [utc]
   SOL Noise Record(s)   3282 - 3281  
   SOL Dummy Record(s) 3280 - 3251 3280 - 3251 14:22:04 - 14:25:40
   FSP Start of Line 3250 3250 14:25:48
   MSP      
   LSP End of Line 2740 2740 15:31:09
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2739 - 2738  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3250 - 2740 3250 - 2740 14:25:48-15:31:09 Infill 12 Valid  
 Remarks:      
   Navigation Streamer depth 7.0mtr. Six streamer line.    
   Recording QC Frontsheet Set 5. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1016mB. Using Six streamer. Orthogonal Line. Bird C6-11 No Comms. Bird C1-3 continously out of spec, off collar. Bend noise on EOL noise    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3282 - 2739 3282 - 2739 1 10091  
Stream 2
   Shot(s) Files Deck Reel Remark
  3282 - 2739 3282 - 2739 3 10091  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2067, 2134, 2185 Noisy Trace(s)  
3211-3207     3211-3207 27-43 Bird depth out of spec Bird C1-3
3168-3164     3168-3164 27-43 Bird depth out of spec Bird C1-3
3155     3155 27-43 Bird depth out of spec Bird C1-3
3080-3065     3080-3065 27-43 Bird depth out of spec Bird C1-3
3013-3003     3013-3003 27-43 Bird depth out of spec Bird C1-3
2912-2911     2912-2911 2083-2099 Bird depth out of spec Bird C6-12
2854-2849     2854-2849 27-43 Bird depth out of spec Bird C1-3
2851-2835     2851-2835 51-67 Bird depth out of spec Bird C1-4
2803-2767     2803-2767 1-72 Streamer noise Low frequency noise dt currents
2803-2767     2803-2767 369-440 Streamer noise Low frequency noise dt currents
2803-2767     2803-2767 737-808 Streamer noise Low frequency noise dt currents
2803-2767     2803-2767 1105-1176 Streamer noise Low frequency noise dt currents
2803-2767     2803-2767 1473-1544 Streamer noise Low frequency noise dt currents
2803-2767     2803-2767 1841-1912 Streamer noise Low frequency noise dt currents
2789-2743     2789-2743 27-43 Bird depth out of spec Bird C1-3
2766-2740     2766-2740 15-110 Streamer noise Low frequency noise dt currents
2766-2740     2766-2740 383-478 Streamer noise Low frequency noise dt currents
2766-2740     2766-2740 751-846 Streamer noise Low frequency noise dt currents
2766-2740     2766-2740 1119-1214 Streamer noise Low frequency noise dt currents
2766-2740     2766-2740 1487-1582 Streamer noise Low frequency noise dt currents
2766-2740     2766-2740 1855-1964 Streamer noise Low frequency noise dt currents
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 379, 1127, 1895, 2183-2184 Noisy Trace(s)  
ALL     ALL 27-43 Bird depth out of spec Bird continously out of spec, off collar
3204     3204 ALL Gun timing error Gun 5-4 error (ms) : -1.3
3154     3154 ALL Gun timing error Gun 5-4 error (ms) : -1.2
3150-3139     3150-3139 1763-1779 Bird depth out of spec Bird C5-14
3056     3056 ALL Gun timing error Gun 5-4 error (ms) : -1.3
3052     3052 ALL Gun timing error Gun 5-4 error (ms) : -1.1
2945-2913     2945-2913 2083-2099 Bird depth out of spec Bird C6-12
2877-2852     2877-2852 51-67 Bird depth out of spec Bird C1-4
2849-2827     2849-2827 75-91 Bird depth out of spec Bird C1-5
2848-2835     2848-2835 27-43 Bird depth out of spec Bird C1-3
2818-2806     2818-2806 741-755 Bird depth out of spec Bird C3-2
2812-2788     2812-2788 2195-2208 Bird depth out of spec Bird C6-17
2808-2797     2808-2797 2083-2099 Bird depth out of spec Bird C6-12
2806-2794     2806-2794 1477-1491 Bird depth out of spec Bird C5-2
2789-2777     2789-2777 2083-2099 Bird depth out of spec Bird C5-14
2787-2778     2787-2778 2083-2099 Bird depth out of spec Bird C6-12
Comment
Shot(s)     File(s) Trace(s) Type Remark
2915     2915 ALL Swell Noise Swell noise increasing, affecting 5-10% of traces, 8uB RMS
2830-2780     2830-2780 ALL Streamer depth Streamer depth control affected by sharp change in current


 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 01:52:50utc 03-Jul-2002