ACQUISITION REPORT Sequence-0311
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3920A311
  Preplot G01A3920
  Direction 198.0°
  SOL Date 11:17:30utc 11-Mar-2002
  EOL Date 13:48:15utc 11-Mar-2002
 Attributes:  
   Wind Force 30.0 [knots] Dir SW
   Swell Height 2.5 [meters] Dir E
   Propellor rpm 122 [avg]  
   Propellor pitch 90 [avg]  
       
  SOL EOL  
   Waterdepth 49.0 57.0 [meters]
   Bottomspeed  4.9 4.8 [knots]
   Featherangle sb +7.0 port -1.3 [deg]
   Cable noise 6.0 20.0 [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
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)      
   SOL Dummy Record(s)      
   FSP Start of Line 4170   11:17:30
   MSP      
   LSP End of Line 2990   13:48:15
   EOL Dummy Record(s)      
   EOL Noise Record(s)      
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4170 - 3400   -    -  Prime 16 Valid  
    3399 - 2990   -    -  Prime 16 Scratched Scratched due to Swell Noise
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1017mB. 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
  4202 - 3773 4202 - 3773 2 1276  
  3772 - 3343 3772 - 3343 1 1277  
  3342 - 2990 3342 - 2990 2 1278  
Stream 2
   Shot(s) Files Deck Reel Remark
  4202 - 3773 4202 - 3773 3 1276  
  3772 - 3343 3772 - 3343 4 1277  
  3342 - 2990 3342 - 2990 3 1278  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 2599 Killed traces  
ALL     ALL 1476, 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1657, 2600, 2772, 2389, 2789 Spiking Trace(s)  
3399-2990       ALL Swell Noise Scratched due to swell noise
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1, occasional deep 8.1-8.4m
3437-3427       75-91 Bird depth out of spec Bird C1-5
3376       ALL Gun timing error Gun 5-4 error (ms) : -1.2
Comment
Shot(s)     File(s) Trace(s) Type Remark
3400       ALL Swell Noise Swell noise increasing to 9 uBar, 5-10% of traces
3100       ALL Swell Noise Swell noise increasing to 13uBar, approx 10% of traces
3000       ALL Swell Noise Swell noise increasing to 20uBar, aprox 10-20% of traces


 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 21:39:24utc 11-Mar-2002