ACQUISITION REPORT Sequence-0342
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4512B342
  Preplot G01A4512
  Direction 18.0°
  SOL Date 03:02:49utc 03-Apr-2002
  EOL Date 09:25:30utc 03-Apr-2002
 Attributes:  
   Wind Force 12.0 [knots] Dir N
   Swell Height 2.0 [meters] Dir NE
   Propellor rpm 122 [avg]  
   Propellor pitch 97 [avg]  
       
  SOL EOL  
   Waterdepth 151.0 54.0 [meters]
   Bottomspeed  4.7 3.7 [knots]
   Featherangle port -8.1 sb +0.6 [deg]
   Cable noise 5.5 0.0 [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
0 STBD -345.0 25.0 -6.0 0.0 0 0
0 STBD -345.0 -25.0 -6.0 0.0 0 0

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)   1726 - 1727  
   SOL Dummy Record(s) 1728 - 1737 1728 - 1737 03:01:33 - 03:02:42
   FSP Start of Line 1738 1738 03:02:49
   MSP      
   LSP End of Line 4314 4314 09:25:30
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4315 - 4316  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1738 - 3446 1738 - 3446 03:02:49-06:58:28 Reshoot 16 Valid  
    3447 - 3480 3447 - 3480 06:58:38-07:05:01 Reshoot 0 Scratched Due to loss of source air supply
    3481 - 4314 3481 - 4314 07:05:13-09:25:30 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 1015mB. 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
  1726 - 2155 1726 - 2155 2 1411  
  2156 - 2585 2156 - 2585 1 1412  
  2586 - 3015 2586 - 3015 2 1413  
  3016 - 3445 3016 - 3445 1 1414  
  3446 - 3875 3446 - 3875 1 1415  
  3876 - 4305 3876 - 4305 2 1416  
  4306 - 4316 4306 - 4316 1 1417  
Stream 2
   Shot(s) Files Deck Reel Remark
  1726 - 2155 1726 - 2155 4 1411  
  2156 - 2585 2156 - 2585 3 1412  
  2586 - 3015 2586 - 3015 4 1413  
  3016 - 3445 3016 - 3445 3 1414  
  3446 - 3875 3446 - 3875 4 1415  
  3876 - 4305 3876 - 4305 3 1416  
  4306 - 4316 4306 - 4316 4 1417  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2265, 1801, 1553 Spiking Trace(s)  
ALL     ALL 1159, 2871 Noisy Trace(s)  
2807     2807 ALL Gun timing error Gun 3-6 error (ms) : 12.3
3447-3480     3447-3480 ALL Low air pressure Edit all streamers d/t loss of air supply (Compressors)
3738-3741     3738-3741 2675-2691 Bird depth out of spec Bird C8-6
4035-4042     4035-4042 1003-1019 Bird depth out of spec Bird C2-13
4089-4107     4089-4107 1003-1019 Bird depth out of spec Bird C2-13
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1476 Weak Trace(s) Trace signal less than -6dB of nominal value
2343-2354     2343-2354 NONE   Bird C1-8 5.9-5.8 Mtrs
2840     2840 NONE Gun timing error Gun 5-4 error (ms) : 1.1
2949-2960     2949-2960 NONE Bird depth out of spec Bird C1-8 5.9-5.8 Mtrs
3387-3401     3387-3401 NONE Bird depth out of spec Bird C2-13
3411-3425     3411-3425 NONE Bird depth out of spec Bird C7-11
3720-3736     3720-3736 NONE Bird depth out of spec Bird C1-8
3729-3738     3729-3738 NONE Bird depth out of spec Bird C8-3
3731-3741     3731-3741 NONE Bird depth out of spec Bird C8-4
3761-3778     3761-3778 NONE Bird depth out of spec Bird C2-13
3779-3791     3779-3791 NONE Bird depth out of spec Bird C1-8
3792-3820     3792-3820 NONE Bird depth out of spec Bird C2-13
3826-3836     3826-3836 NONE Bird depth out of spec Bird C1-8
3842-3856     3842-3856 NONE Bird depth out of spec Bird C2-13
3850-3864     3850-3864 NONE Bird depth out of spec Bird C1-8
3852-3870     3852-3870 ALL Streamer noise Low frequency noise dt currents
3905-3915     3905-3915 NONE Bird depth out of spec Bird C2-13
4023-4034     4023-4034 NONE Bird depth out of spec Bird C2-13
4043-4088     4043-4088 NONE Bird depth out of spec Bird C2-13
4108-4119     4108-4119 NONE Bird depth out of spec Bird C2-13
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL NONE   Bird C1-1 occasionally shallow, 5.9m


 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 11:41:03utc 03-Apr-2002