ACQUISITION REPORT Sequence-0111
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3408B111
  Preplot G01A3408
  Direction 18.0°
  SOL Date 05:11:24utc 08-Dec-2001
  EOL Date 07:13:27utc 08-Dec-2001
 Attributes:  
   Wind Force 3.0 [knots] Dir ESE
   Swell Height 1.5 [meters] Dir ESE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 64.0 55.0 [meters]
   Bottomspeed  3.7 3.5 [knots]
   Featherangle port -12.4 port -6.2 [deg]
   Cable noise 8.42 8.69 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Port Volume 3542 3542  
   Stbd Volume 3542 3387  

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)   1685 - 1686  
   SOL Dummy Record(s) 1687 - 1716 1687 - 1716 05:06:30 - 05:11:14
   FSP Start of Line 1717 1717 05:11:24
   MSP      
   LSP End of Line 2430 2430 07:13:27
   EOL Dummy Record(s) 3516 - 4034 3516 - 4034 13:51:21 - 17:24:59
   EOL Noise Record(s)   4182 - 4183  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1717 - 2430 1717 - 2430 05:11:24-07:13:27 Reshoot 16 Scratched Line aborted dt swell noise
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017 mB, pressure now 1015 mB. Str 8 Bird 1 and Str 1 Bird 17 mask on External Header.Gun 1.5 disabled at SP 1727 dt not fired.New STB volume 3387 cu.in.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1685 - 2114 1685 - 2114 1 451  
  2115 - 4183 2115 - 4183 1 452  
Stream 2
   Shot(s) Files Deck Reel Remark
  1685 - 2114 1685 - 2114 3 451  
  2115 - 4183 2115 - 4183 4 452  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 1948 Killed traces  
ALL     ALL 1191, 2764, 2806 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 839, 1657 Spiking Trace(s)  
2061     2061 ALL Gun timing error Gun 2-2 error (ms) : -2.0
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2577-2581 Bird depth out of spec Bird C8-1 deep all line, max 8.4 m
ALL     ALL 1841-1845 Bird depth out of spec Bird C6-1 often deep, max 8.1 m
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 often deep , max 8.2 m
ALL     ALL 2304 Fail crossfeed test  
ALL     ALL ALL Swell Noise swell noise affected 10 - 15 % of traces, Amplitude 50 - 100 uB
ALL     ALL 5-7, 9, 369-371, 373, 737-742, 744-745, 748, 1105-1107, 1109-1113, 1126, 1130, 2209-2210 Slope alarm > 5% of total line
1754     1754 1845-1859 Bird depth out of spec Bird C6-2
1828     1828 ALL Gun timing error Gun 5-3 error (ms) : -1.3
1865     1865 ALL Gun timing error Gun 2-2 error (ms) : -1.9
2009     2009 ALL Gun timing error Gun 2-2 error (ms) : -1.6
2151     2151 1845-1859 Bird depth out of spec Bird C6-2
2190-2191     2190-2191 1845-1859 Bird depth out of spec Bird C6-2
2194-2195     2194-2195 1845-1859 Bird depth out of spec Bird C6-2
2198     2198 1845-1859 Bird depth out of spec Bird C6-2
2202     2202 2603-2619 Bird depth out of spec Bird C8-3
2203     2203 2581-2595 Bird depth out of spec Bird C8-2
2204-2207     2204-2207 2603-2619 Bird depth out of spec Bird C8-3
2225     2225 2581-2595 Bird depth out of spec Bird C8-2
2385     2385 1845-1859 Bird depth out of spec Bird C6-2
Comment
Shot(s)     File(s) Trace(s) Type Remark
1729     1729 ALL Gun not fired Gun-status lost for gun 1-5
1731     1731 ALL Gun not fired Gun-status lost for gun 1-5
1733     1733 ALL Gun not fired Gun-status lost for gun 1-5
1735     1735 ALL Gun not fired Gun-status lost for gun 1-5
1736     1736 ALL Disabaled gun Disabled gun 1-5 dt not fired. New STB vol 3387 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 20:38:37utc 08-Dec-2001