ACQUISITION REPORT Sequence-0485
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4720M485
  Preplot G01A4720
  Direction 0.0°
  SOL Date 00:06:31utc 24-Jun-2002
  EOL Date 01:11:23utc 24-Jun-2002
 Attributes:  
   Wind Force 22.0 [knots] Dir NW
   Swell Height 1.5 [meters] Dir W
   Propellor rpm 122 [avg]  
   Propellor pitch 96 [avg]  
       
  SOL EOL  
   Waterdepth 8.8 162.0 [meters]
   Bottomspeed  4.1 4.3 [knots]
   Featherangle sb +4.3 port -4.6 [deg]
   Cable noise 8.8 6.4 [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 -520.0 250.0 -7.0 4600 Nessie-3 12.5 368 0001-0368
2 STBD -520.0 150.0 -7.0 4600 Nessie-3 12.5 368 0369-0736
3 STBD -520.0 50.0 -7.0 4600 Nessie-3 12.5 368 0737-1104
4 PORT -520.0 -50.0 -7.0 4600 Nessie-3 12.5 368 1105-1472
5 PORT -520.0 -150.0 -7.0 4600 Nessie-3 12.5 368 1473-1840
6 PORT -520.0 -250.0 -7.0 4600 Nessie-3 12.5 368 1841-2208

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

Production
  Shotpoint File Time [utc]
   SOL Noise Record(s)   2128 - 2129  
   SOL Dummy Record(s) 2130 - 2139 2130 - 2139 00:05:03 - 00:06:22
   FSP Start of Line 2140 2140 00:06:31
   MSP      
   LSP End of Line 2585 2585 01:11:23
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4324 - 4325  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2140 - 2575 2140 - 2575 00:06:31-01:09:58 Infill 12 Valid  
    2576 - 2585 2576 - 2585 01:10:07-01:11:23 Infill 12 Valid Overlap sp's
 Remarks:      
   Navigation Streamer depth 7.0mtr. Six streamer line.    
   Recording QC Frontsheet Set 5. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1028mB. Six streamer line.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2128 - 4325 2128 - 4325 1 1968  
Stream 2
   Shot(s) Files Deck Reel Remark
  2128 - 4325 2128 - 4325 3 1968  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1127, 2134, 379, 1895 Noisy Trace(s)  
ALL     ALL 2182-2184 Noisy channels Noise bursts seen on these channels. Pos debris on streamer
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-2, 6, 369-370, 1473-1485, 1841-1858, 1861-1863 Slope alarm > 5% of total line
2278-2341     2278-2341 NONE Bird depth out of spec Bird 1-3 running shallow min 5.5 mtrs
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL NONE Parity errors Very low level parity errors observed cable 2 line 2
ALL     ALL ALL Swell Noise Swell noise seen on all cables approx 10-15%


 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 14:34:17utc 24-Jun-2002