ACQUISITION REPORT Sequence-0036
 Survey:  
  Client Bass Strait Oil Company
  Area Vic/P42 Gippsland Basin
  Vessel GECO_BETA
  JobNumber 9226
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename VP421376J036
  Preplot VP421376
  Direction 13.0°
  SOL Date 20:50:59utc 04-Aug-2002
  EOL Date 01:13:51utc 05-Aug-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir SW
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 135 [avg]  
   Propellor pitch 90 [avg]  
       
  SOL EOL  
   Waterdepth 66.0 55.0 [meters]
   Bottomspeed  4.0 4.3 [knots]
   Featherangle port -5.9 sb +7.0 [deg]
   Cable noise 8.8 5.9 [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)   2799 - 2798  
   SOL Dummy Record(s) 2797 - 2788 2797 - 2788 20:49:29 - 20:50:50
   FSP Start of Line 2787 2787 20:50:59
   MSP 1515 1515 23:59:57
   LSP End of Line 994 994 01:13:51
   EOL Dummy Record(s)      
   EOL Noise Record(s)   993 - 993  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2787 - 994 2787 - 994 20:50:59-01:13:51 Infill 16 Valid  
 Remarks:      
   Navigation Streamer depth 8.0 mtr    
   Recording QC Frontsheet Set 1. Gundepth calibrated at atmospheric pressure 1027mB, pressure now 1016mB. External screw noise seen on SOL noise record.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2799 - 2370 2799 - 2370 2 141  
  2369 - 1940 2369 - 1940 1 142  
  1939 - 1510 1939 - 1510 2 143  
  1509 - 1080 1509 - 1080 1 144  
  1079 - 994 1079 - 994 2 145  
Stream 2
   Shot(s) Files Deck Reel Remark
  2799 - 2370 2799 - 2370 3 141  
  2369 - 1940 2369 - 1940 4 142  
  1939 - 1510 1939 - 1510 3 143  
  1509 - 1080 1509 - 1080 4 144  
  1079 - 994 1079 - 994 3 145  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL-994 109 Killed traces  
ALL     ALL 1657 Spiking Channel Occ spiking
ALL     ALL 161, 304 Noisy Channels  
ALL     ALL 2497, 1492 Weak Trace(s) Trace signal less than -6dB of nominal value
2689     2689 ALL External header lost  
2395     2395 ALL External header lost  
2182     2182 ALL Gun not fired MISFIRE - Gun 6-2. Source volume : 3307 cu.in.
2180     2180 ALL Gun not fired MISFIRE - Gun 6-2. Source volume : 3307 cu.in.
1966-1901     1966-1901 2223-2346 Monowing wash Low frequency, high amplitude noise due to monowing wash
1950-1935     1950-1935 2625-2698 Monowing wash Low frequency, high amplitude noise due to monowing wash
1889-1850     1889-1850 2282-2305 Streamer depth Streamer depth out of spec, Bird 7-5 min 5.8 m.
1877-1832     1877-1832 2306-2329 Streamer depth Streamer depth out of spec, Bird 7-6 min 5.6 m.
1860-1823     1860-1823 2330-2353 Streamer depth Streamer depth out of spec, Bird 7-7 min 5.5 m.
1231     1231 ALL External header lost  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Occ slight swell noise seen
ALL     ALL 1-17, 22, 369-383, 385, 737-746, 748, 1841-1855, 1857-1858, 1861-1862, 1865, 2209-2232, 2235, 2577-2601, 2603, 2605, 2607 Slope alarm > 5% of total line
2656     2656 ALL Gun timing error Gun 5-3 error (ms) : -1.1
2359     2359 ALL Gun timing error Gun 2-3 error (ms) : -1.1
2262     2262 ALL Gun timing error Gun 5-3 error (ms) : -1.1
2162     2162 ALL Gun timing error Gun 5-3 error (ms) : -1.1
2114     2114 ALL Gun timing error Gun 4-5 error (ms) : -1.1
2035     2035 ALL Gun timing error Gun 2-3 error (ms) : -1.1
1964     1964 ALL Gun timing error Gun 5-3 error (ms) : -1.1
1961-1948     1961-1948 NONE Streamer depth Streamer depth out of spec, Bird 7-4 max 11.2 m.
1945-1924     1945-1924 NONE Streamer depth Streamer depth out of spec, Bird 7-5 max 10.2 m.
1896-1869     1896-1869 NONE Streamer depth Streamer depth out of spec, Bird 7-7 max 9.3 m.
1875-1850     1875-1850 NONE Streamer depth Streamer depth out of spec, Bird 7-9 max 9.8 m.
1871-1856     1871-1856 NONE Streamer depth Streamer depth out of spec, Bird 7-8 max 9.8 m.
1870     1870 ALL Gun timing error Gun 5-3 error (ms) : -1.2
1849-1825     1849-1825 NONE Streamer depth Streamer depth out of spec, Bird 7-8 min 6.8 m.
1750     1750 ALL Gun timing error Gun 5-3 error (ms) : -1.2
1714     1714 ALL Gun timing error Gun 5-3 error (ms) : -1.2
1626     1626 ALL Gun timing error Gun 5-3 error (ms) : -1.3
1582     1582 ALL Gun timing error Gun 5-3 error (ms) : -1.2
1574     1574 ALL Gun timing error Gun 5-3 error (ms) : -1.1
1545     1545 ALL Gun timing error Gun 2-3 error (ms) : 1.1
1280     1280 ALL Gun timing error Gun 5-3 error (ms) : -1.2
1173     1173 ALL Gun timing error Gun 2-3 error (ms) : -1.2
1054     1054 ALL Gun timing error Gun 5-4 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 11:31:56utc 05-Aug-2002