ACQUISITION REPORT Sequence-0118
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3232B118
  Preplot G01A3232
  Direction 18.0°
  SOL Date 15:33:03utc 15-Dec-2001
  EOL Date 21:19:54utc 15-Dec-2001
 Attributes:  
   Wind Force 10.0 [knots] Dir WSW
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 61.0 43.1 [meters]
   Bottomspeed  4.1 4.7 [knots]
   Featherangle sb +0.3 sb +3.2 [deg]
   Cable noise 6.0 8.2 [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)   1609 - 1610  
   SOL Dummy Record(s) 1611 - 1640 1611 - 1640 15:28:39 - 15:32:54
   FSP Start of Line 1641 1641 15:33:03
   MSP      
   LSP End of Line 4136 4136 21:19:54
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4137 - 4139  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1641 - 4136 1641 - 4136 15:33:03-21:19:54 Reshoot 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1016mB. Str 7 Bird 1 mask on External Header, occasionally deep, 8.3m.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1609 - 2038 1609 - 2038 1 488  
  2039 - 2468 2039 - 2468 1 489  
  2469 - 2898 2469 - 2898 1 490  
  2899 - 3328 2899 - 3328 1 491  
  3329 - 3758 3329 - 3758 1 492  
  3759 - 4139 3759 - 4139 1 493  
Stream 2
   Shot(s) Files Deck Reel Remark
  1609 - 2038 1609 - 2038 3 488  
  2039 - 2468 2039 - 2468 4 489  
  2469 - 2898 2469 - 2898 3 490  
  2899 - 3328 2899 - 3328 4 491  
  3329 - 3758 3329 - 3758 3 492  
  3759 - 4139 3759 - 4139 4 493  

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)  
3059     3059 ALL Gun timing error Gun 1-2 error (ms) : -2.1
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 Occassionally deep 7.9 - 8.4m
ALL     ALL 1227, 2301 Crossfeed Fails crossfeed test
ALL     ALL 1-9, 12, 369-374, 377, 379, 737-749, 751-752, 1105-1106, 1108-1113, 1126, 1473, 1484, 1489, 1499, 1841-1850, 1852, 2209-2211, 2213-2214, 2216-2218, 2577 Slope alarm > 5% of total line
1889     1889 ALL Gun timing error Gun 2-2 error (ms) : -1.6
1927     1927 ALL Gun timing error Gun 2-2 error (ms) : -1.8
2017     2017 ALL Gun timing error Gun 2-2 error (ms) : -1.7
2050     2050 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
2146     2146 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
2505     2505 ALL Gun timing error Gun 2-2 error (ms) : -1.6
2585     2585 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
2756     2756 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
3077     3077 ALL Gun timing error Gun 1-2 error (ms) : -1.7
4009     4009 ALL TRISOR input NFH & ExtHdr GUNPOS block not recorded
4136-4137     4136- ALL Source depth out of spec Source-depth for gun position 1-6 above 5.4 meter
Comment
Shot(s)     File(s) Trace(s) Type Remark
1641     1641 ALL Swell Noise Swell noise affecting <5% of traces, ambient RMS 6uB
2700     2700 ALL Swell Noise Swell noise affecting <5% of traces, ambient RMS 6uB
3835     3835 ALL Swell Noise Swell noise increasing, affecting 5% of traces, ambient RMS 8uB


 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