ACQUISITION REPORT Sequence-0161
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A2144A161
  Preplot G01A2144
  Direction 18.0°
  SOL Date 13:56:56utc 29-Dec-2001
  EOL Date 14:20:59utc 29-Dec-2001
 Attributes:  
   Wind Force 25.0 [knots] Dir SW
   Swell Height 1.8 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 48.5 48.5 [meters]
   Bottomspeed  4.3 4.1 [knots]
   Featherangle sb +5.0 sb +5.0 [deg]
   Cable noise 12.4 17.3 [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)   1388 - 1389  
   SOL Dummy Record(s) 1390 - 1419 1390 - 1419 13:52:48 - 13:56:48
   FSP Start of Line 1420 1420 13:56:56
   MSP      
   LSP End of Line 1595 1595 14:20:59
   EOL Dummy Record(s) 1646 - 1705 1646 - 1705 14:28:21 - 14:36:48
   EOL Noise Record(s)   3472 - 3473  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1420 - 1595 1420 - 1595 13:56:56-14:20:59 Prime 0 Scratched Scratched due to swell noise
 Remarks:      
   Navigation      
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1005mB SSE functions on TRISOR disabled, GUNPOS block NOT recorded. Bird 8-18 masked from external header d/t bad depth reading.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1388 - 3473 1388 - 3473 2 666  
Stream 2
   Shot(s) Files Deck Reel Remark
  1388 - 3473 1388 - 3473 4 666  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1657, 2307, 2731 Spiking Trace(s)  
ALL     ALL- 1853 Killed traces  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2871 Noisy Trace(s)  
ALL     ALL 2301 Cross feed Fails cross feed test
ALL     ALL ALL Swell Noise Swell noise increasing, affecting 20% of traces, 15-20 uB RMS ambient noise
ALL     ALL 1106, 2209-2220, 2223-2224, 2577, 2585, 2602 Slope alarm > 5% of total line
1595     1595 ALL Line scratched Line scratched due to swell noise
Comment
Shot(s)     File(s) Trace(s) Type Remark


 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 14:39:06utc 29-Dec-2001