ACQUISITION REPORT Sequence-0226
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A1472B226
  Preplot G01A1472
  Direction 198.0°
  SOL Date 04:47:39utc 25-Jan-2002
  EOL Date 05:37:29utc 25-Jan-2002
 Attributes:  
   Wind Force 16.0 [knots] Dir E
   Swell Height 2.5 [meters] Dir E
   Propellor rpm 122 [avg]  
   Propellor pitch 94 [avg]  
       
  SOL EOL  
   Waterdepth 35.0 38.0 [meters]
   Bottomspeed  4.7 5.1 [knots]
   Featherangle sb +0.6 sb +4.5 [deg]
   Cable noise 6.2 7.2 [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)   1359 - 1358  
   SOL Dummy Record(s) 1357 - 1348 1357 - 1348 04:46:22 - 04:47:32
   FSP Start of Line 1347 1347 04:47:39
   MSP      
   LSP End of Line 938 938 05:37:29
   EOL Dummy Record(s)      
   EOL Noise Record(s)   937 - 937  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1347 - 1338 1347 - 1338 04:47:39-04:48:47 Reshoot 16 Valid Overlap sp's
    1337 - 938 1337 - 938 04:48:54-05:37:29 Reshoot 16 Valid Reshoot of seq 212 d/t subarray 3 gun double popping
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Birds 2-9, 4-17 lost comms. Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1019mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1359 - 938 1359 - 938 1 936  
Stream 2
   Shot(s) Files Deck Reel Remark
  1359 - 938 1359 - 938 3 936  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL-939 1255 Killed traces  
ALL     ALL-939 1855 Killed traces  
ALL     ALL 2037 Noisy channel  
ALL     ALL 1657 Spiking channel  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 201-205 Noise Slight low freq noise observed
ALL     ALL 193-196 Noise Slight low freq noise observed
ALL     ALL 4-7, 9, 369, 737, 744, 1473, 2209-2219, 2577, 2585-2588, 2602 Slope alarm > 5% of total line
1344     1344 ALL Gun Timing Error Gun 5-4 error (ms) : -1.7
1300     1300 ALL Gun timing error Gun 5-4 error (ms) : -1.1
1248     1248 ALL Gun timing error Gun 5-4 error (ms) : -1.7
1232     1232 ALL Gun timing error Gun 5-4 error (ms) : -1.4
1199-1187     1199-1187 NONE Bird depth out of spec Bird C1-4
1140     1140 ALL Gun timing error Gun 5-4 error (ms) : -1.7
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL NONE Bad Bird Birds 4-17, 2-9 no comms
ALL     ALL NONE Bird dropout Cable 1 random bird dropout seen
ALL     ALL ALL Swell Noise Swell noise seen on all cables approx 5-10%


 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 05:57:52utc 25-Jan-2002