ACQUISITION REPORT Sequence-0012
 Survey:  
  Client Bass Strait Oil Company
  Area Vic/P42 Gippsland Basin
  Vessel GECO_BETA
  JobNumber 9226
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename VP421168P012
  Preplot VP421168
  Direction 13.0°
  SOL Date 17:22:31utc 30-Jul-2002
  EOL Date 21:23:32utc 30-Jul-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir NE
   Swell Height 0.5 [meters] Dir N
   Propellor rpm 135 [avg]  
   Propellor pitch 88 [avg]  
       
  SOL EOL  
   Waterdepth 66.6 59.0 [meters]
   Bottomspeed  4.3 5.1 [knots]
   Featherangle port -3.3 sb +5.0 [deg]
   Cable noise 6.1 4.9 [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)   2847 - 2846  
   SOL Dummy Record(s) 2845 - 2816 2845 - 2816 17:18:17 - 17:22:23
   FSP Start of Line 2815 2815 17:22:31
   MSP      
   LSP End of Line 929 929 21:23:32
   EOL Dummy Record(s)      
   EOL Noise Record(s)   928 - 927  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2815 - 929 2815 - 929 17:22:31-21:23:32 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 8.0mtr.    
   Recording QC Frontsheet Set 1. Gundepth calibrated at atmospheric pressure 1032mB, pressure now 1028mB.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2847 - 2418 2847 - 2418 1 47  
  2417 - 1988 2417 - 1988 1 48  
  1987 - 1558 1987 - 1558 1 49  
  1557 - 1128 1557 - 1128 1 50  
  1127 - 928 1127 - 928 1 51  
Stream 2
   Shot(s) Files Deck Reel Remark
  2847 - 2418 2847 - 2418 4 47  
  2417 - 1988 2417 - 1988 3 48  
  1987 - 1558 1987 - 1558 4 49  
  1557 - 1128 1557 - 1128 3 50  
  1127 - 928 1127 - 928 4 51  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL-930 109 Killed traces  
ALL     ALL 161, 304 Noisy Trace(s)  
ALL     ALL 1492, 2497 Weak Trace(s) Trace signal less than -6dB of nominal value
2718     2718 ALL External header lost  
1223     1223 ALL External header lost  
1194     1194 ALL Gun not fired Gun 6-2. Source volume : 3307 cu.in.
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-20, 22, 369-383, 385, 737-745, 748, 752, 1473, 1841-1855, 1857-1859, 1861-1862, 2209-2232, 2235, 2577-2601, 2603, 2605-2607, 2612 Slope alarm > 5% of total line
2682     2682 ALL Gun timing error Gun 5-3 error (ms) : -1.1
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 07:44:07utc 31-Jul-2002