ACQUISITION REPORT Sequence-0338
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4640J338
  Preplot G01A4640
  Direction 18.0°
  SOL Date 16:09:37utc 01-Apr-2002
  EOL Date 22:09:32utc 01-Apr-2002
 Attributes:  
   Wind Force 24.0 [knots] Dir NE
   Swell Height 3.0 [meters] Dir NE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 230.0 58.0 [meters]
   Bottomspeed  4.2 4.2 [knots]
   Featherangle port -4.1 port -2.2 [deg]
   Cable noise 13.3 5.9 [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)   1777 - 1778  
   SOL Dummy Record(s) 1779 - 1788 1779 - 1788 16:08:10 - 16:09:28
   FSP Start of Line 1789 1789 16:09:37
   MSP      
   LSP End of Line 4320 4320 22:09:32
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4321 - 4322  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1789 - 4320 1789 - 4320 16:09:37-22:09:32 Infill 16 Valid  
 Remarks:      
   Navigation Streamer depth 7.0mtrs    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1029mB, pressure now 1018mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. STB guns firing on ODD SP.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1777 - 2206 1777 - 2206 1 1397  
  2207 - 2636 2207 - 2636 2 1398  
  2637 - 3066 2637 - 3066 1 1399  
  3067 - 3496 3067 - 3496 2 1400  
  3497 - 3926 3497 - 3926 1 1401  
  3927 - 4322 3927 - 4322 2 1402  
Stream 2
   Shot(s) Files Deck Reel Remark
  1777 - 2206 1777 - 2206 3 1397  
  2207 - 2636 2207 - 2636 4 1398  
  2637 - 3066 2637 - 3066 3 1399  
  3067 - 3496 3067 - 3496 4 1400  
  3497 - 3926 3497 - 3926 3 1401  
  3927 - 4322 3927 - 4322 4 1402  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1159, 345, 2871 Noisy channel  
ALL     ALL 1476 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 2265, 343 Spiking channels  
1850     1850 1841-2208 Streamer Earth Leakage  
1903     1903 1841-2208 Streamer Earth Leakage  
2076     2076 1841-2208 Streamer Earth Leakage  
2104     2104 1841-2208 Streamer Earth Leakage  
2423     2423 1841-2208 Streamer Earth Leakage  
2635     2635 1841-2208 Streamer Earth Leakage  
2654-2669     2654-2669 2255-2275 Bird depth out of spec Bird C7-4 deep max 10 m
2655-2661     2655-2661 2235-2254 Bird depth out of spec Bird C7-3 deep max 10 m
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Swell noise seen @ sol approx 15%
ALL     ALL 1841-2208 Parity Errors Low level parity errors observed streamer 6 throughout line.
ALL     ALL NONE Streamer depth Bird 6-18 running deep throughout line average 8.5 mtrs
ALL     ALL NONE Streamer depth Bird 2-13 depth fluctuating throughout line
1787-1835     1787-1835 NONE Streamer depth Bird 2-13 deep max 9.0 mtr
1948-1966     1948-1966 NONE Streamer depth Bird 8-3 deep max 9.1 mtrs
1979     1979 1841-2208 Streamer Earth Leakage  
1991     1991 ALL Gun timing error Gun 1-2 error (ms) : -1.8
2061-2086     2061-2086 NONE Streamer depth Bird 2-13 shallow min 4.4 mtr
2115-2130     2115-2130 NONE Streamer depth Bird 8-4 deep max 9.0 mtrs
2117-2131     2117-2131 NONE Streamer depth Bird 8-3 deep max 8.8 mtrs
2117-2130     2117-2130 NONE Streamer depth Bird 7-4 deep max 8.8 mtrs
2164-2193     2164-2193 NONE Streamer depth Bird 7-3 deep max 9.6 mtrs
2166-2181     2166-2181 NONE Streamer depth Bird 7-5 deep max 8.9 mtrs
2280-2298     2280-2298 NONE Streamer depth Bird 7-3 deep max 9.3 mtrs
2300     2300 ALL Swell Noise Swell noise now decreasing approx 5% occasionally
2341-2364     2341-2364 NONE Streamer depth Bird 8-5 deep max 8.4 mtrs
2357-2370     2357-2370 NONE Streamer depth Bird 8-3 deep max 9.3 mtrs
2358-2372     2358-2372 NONE Streamer depth Bird 7-3 deep max 8.5 mtrs
2544     2544 ALL Gun timing error Gun 5-4 error (ms) : 1.2
2982     2982 ALL Gun timing error Gun 5-4 error (ms) : 1.2
3034     3034 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3056     3056 ALL Gun timing error Gun 5-4 error (ms) : 1.3
3104     3104 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3128     3128 ALL Gun timing error Gun 5-4 error (ms) : 1.4
3196     3196 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3246     3246 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3316     3316 ALL Gun Timing Error Gun 5-4 (1.2 ms)
3320     3320 ALL Gun timing error Gun 5-4 error (ms) : 1.3
3344     3344 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3348     3348 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3412     3412 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3514     3514 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3523     3523 ALL Gun timing error Gun 1-2 error (ms) : -1.7
3546     3546 ALL Gun timing error Gun 5-4 error (ms) : 1.3
3590     3590 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3614     3614 ALL Gun timing error Gun 5-4 error (ms) : 1.2
3638     3638 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3652-3663     3652-3663 ALL Seismic Interference External energy source seen approx 5-10uB no discernible moveout.
3682     3682 ALL Gun timing error Gun 5-4 error (ms) : 1.1
3906     3906 ALL Gun timing error Gun 5-4 error (ms) : 1.2
3994     3994 ALL Gun timing error Gun 5-4 error (ms) : 1.1
4139     4139 ALL Gun timing error Gun 1-2 error (ms) : -1.8
4244-4273     4244-4273 NONE Streamer depth Bird 1-5 deep max 9.4 mtrs
4249-4261     4249-4261 NONE Streamer depth Bird 1-4 deep max 8.7 mtrs
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 02:20:41utc 02-Apr-2002