ACQUISITION REPORT Sequence-0120
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3328B120
  Preplot G01A3328
  Direction 18.0°
  SOL Date 07:38:11utc 16-Dec-2001
  EOL Date 13:06:47utc 16-Dec-2001
 Attributes:  
   Wind Force 15.0 [knots] Dir SW
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 62.0 42.0 [meters]
   Bottomspeed  5.0 4.3 [knots]
   Featherangle sb +4.2 port -4.7 [deg]
   Cable noise 14.39 10.1 [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)   1648 - 1649  
   SOL Dummy Record(s) 1650 - 1681 1650 - 1681 07:34:19 - 07:38:04
   FSP Start of Line 1682 1682 07:38:11
   MSP      
   LSP End of Line 4160 4160 13:06:47
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4161 - 4162  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1682 - 4160 1682 - 4160 07:38:11-13:06:47 Reshoot 16 Scratched Line scratched dt swell
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1027mB. Str7 Bird 1 mask on External Header, occasionally deep, 7.8m. Swell noise affected the streamer during noise records.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1648 - 2077 1648 - 2077 1 500  
  2078 - 2507 2078 - 2507 1 501  
  2508 - 2937 2508 - 2937 2 502  
  2938 - 3367 2938 - 3367 1 503  
  3368 - 3797 3368 - 3797 2 504  
  3798 - 4162 3798 - 4162 1 505  
Stream 2
   Shot(s) Files Deck Reel Remark
  1648 - 2077 1648 - 2077 3 500  
  2078 - 2507 2078 - 2507 4 501  
  2508 - 2937 2508 - 2937 3 502  
  2938 - 3367 2938 - 3367 4 503  
  3368 - 3797 3368 - 3797 3 504  
  3798 - 4162 3798 - 4162 4 505  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1191, 2307 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 2871 Noisy Trace(s)  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1227, 2301 Cossfeed Fails crossfeed test
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 often deep, max 8.5 m
ALL     ALL 1-9, 11-12, 369-380, 737-752, 755, 758, 763-764, 1105-1113, 1126, 1130, 1489, 1841-1843, 1845-1850, 1852-1853, 1855-1856, 2209-2211, 2213-2214, 2216-2218, 2223, 2587 Slope alarm > 5% of total line
2287     2287 ALL Gun timing error Gun 1-2 error (ms) : -1.9
2688     2688 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
2695     2695 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
2729     2729 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
2748-2774     2748-2774 2577-2581 Bird depth out of spec Bird C8-1 occasionally deep , max 8.2m
3473     3473 ALL Gun timing error Gun 1-2 error (ms) : -1.8
3635     3635 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
3702     3702 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
3715     3715 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
4104     4104 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
Comment
Shot(s)     File(s) Trace(s) Type Remark
1682-3450     1682-3450 ALL Swell Noise Swell noise affecting 10% of traces, 12 uB RMS ambient noise
3451-4160     3451-4160 ALL Swell Noise Swell noise affecting 8% of traces, 10 uB RMS ambient noise


 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 14:10:27utc 17-Dec-2001