ACQUISITION REPORT Sequence-0045
 Survey:  
  Client Bass Strait Oil Company
  Area Vic/P42 Gippsland Basin
  Vessel GECO_BETA
  JobNumber 9226
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename VP421440P045
  Preplot VP421440
  Direction 193.0°
  SOL Date 18:26:27utc 08-Aug-2002
  EOL Date 21:21:01utc 08-Aug-2002
 Attributes:  
   Wind Force 20.0 [knots] Dir SW
   Swell Height 2.0 [meters] Dir SW
   Propellor rpm 135 [avg]  
   Propellor pitch 90 [avg]  
       
  SOL EOL  
   Waterdepth 59.0 65.0 [meters]
   Bottomspeed  3.9 4.8 [knots]
   Featherangle port -4.6 sb +5.9 [deg]
   Cable noise 6.3 6.1 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Filter Slope 18 18  
   Port Volume 3542.0 3542.0  
   Stbd Volume 3542.0 3542.0  

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 -7.0 3542.0 3 24
2 PORT -345.0 -25.0 -7.0 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 -8.0 4600 Nessie-3 12.5 368 0001-0368
2 STBD -520.0 250.0 -8.0 4600 Nessie-3 12.5 368 0369-0736
3 STBD -520.0 150.0 -8.0 4600 Nessie-3 12.5 368 0737-1104
4 STBD -520.0 50.0 -8.0 4600 Nessie-3 12.5 368 1105-1472
5 PORT -520.0 -50.0 -8.0 4600 Nessie-3 12.5 368 1473-1840
6 PORT -520.0 -150.0 -8.0 4600 Nessie-3 12.5 368 1841-2208
7 PORT -520.0 -250.0 -8.0 4600 Nessie-3 12.5 368 2209-2576
8 PORT -520.0 -350.0 -8.0 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)   1628 - 1629  
   SOL Dummy Record(s) 1630 - 1639 1630 - 1639 18:24:56 - 18:26:17
   FSP Start of Line 1640 1640 18:26:27
   MSP      
   LSP End of Line 2902 2902 21:21:01
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2903 - 2904  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1640 - 2902 1640 - 2902 18:26:27-21:21:01 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 8.0 mtr    
   Recording QC Frontsheet Set 1. Gundepth calibrated at atmospheric pressure 1032mB, pressure now 1029mB.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1628 - 2057 1628 - 2057 1 172  
  2058 - 2487 2058 - 2487 2 173  
  2488 - 2904 2488 - 2904 1 174  
Stream 2
   Shot(s) Files Deck Reel Remark
  1628 - 2057 1628 - 2057 4 172  
  2058 - 2487 2058 - 2487 3 173  
  2488 - 2904 2488 - 2904 4 174  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 109 Killed traces  
ALL     ALL 161, 304, 2345 Noisy Trace(s)  
ALL     ALL 2497, 1492 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1657 Spiking Trace(s) Occ spiking
2221     2221 ALL External header lost  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Occ slight swell noise approx 2%
ALL     ALL 1-17, 20, 22, 369-383, 385, 737-745, 748, 1841-1855, 1857-1858, 1861-1862, 1864-1865, 2209-2232, 2235, 2577-2601, 2603-2605, 2607, 2611-2612 Slope alarm > 5% of total line
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 07:34:58utc 09-Aug-2002