ACQUISITION REPORT Sequence-0008
 Survey:  
  Client Bass Strait Oil Company
  Area Vic/P42 Gippsland Basin
  Vessel GECO_BETA
  JobNumber 9226
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename VP421040P008
  Preplot VP421040
  Direction 193.0°
  SOL Date 21:19:02utc 29-Jul-2002
  EOL Date 01:57:24utc 30-Jul-2002
 Attributes:  
   Wind Force 5.0 [knots] Dir SW
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 137 [avg]  
   Propellor pitch 87 [avg]  
       
  SOL EOL  
   Waterdepth 61.7 68.0 [meters]
   Bottomspeed  4.2 4.8 [knots]
   Featherangle port -4.3 sb +4.9 [deg]
   Cable noise 5.8 7.1 [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)   980 - 981  
   SOL Dummy Record(s) 982 - 1011 982 - 1011 21:14:40 - 21:18:54
   FSP Start of Line 1012 1012 21:19:02
   MSP 2079 2079 23:59:54
   LSP End of Line 2956 2956 01:57:24
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2957 - 2958  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1012 - 2956 1012 - 2956 21:19:02-01:57:24 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 8.0mtr.    
   Recording QC Frontsheet Set 1. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1032mB.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  980 - 1409 980 - 1409 2 33  
  1410 - 1839 1410 - 1839 1 34  
  1840 - 2269 1840 - 2269 2 35  
  2270 - 2699 2270 - 2699 1 36  
  2700 - 2958 2700 - 2958 2 37  
Stream 2
   Shot(s) Files Deck Reel Remark
  980 - 1409 980 - 1409 4 33  
  1410 - 1839 1410 - 1839 3 34  
  1840 - 2269 1840 - 2269 4 35  
  2270 - 2699 2270 - 2699 3 36  
  2700 - 2958 2700 - 2958 4 37  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 161, 304 Noisy Trace(s)  
ALL     ALL 1492, 2497 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL- 109 Killed traces  
1305     1305 ALL External header lost  
2690-2695     2690-2695 2354-2377 Bird depth out of spec Bird C7-8, max depth 12.0m
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-20, 22, 369-383, 385, 737-748, 752, 1473, 1841-1862, 1864-1865, 2209-2235, 2577-2601, 2603, 2605-2607, 2611-2614 Slope alarm > 5% of total line
1183     1183 ALL Gun timing error Gun 1-2 error (ms) : 1.6
1226     1226 ALL Gun timing error Gun 5-4 error (ms) : 1.1
1396     1396 ALL Gun timing error Gun 5-4 error (ms) : 1.1
1535-1540     1535-1540 ALL Noisy Trace(s) Ship noise from ahead - chase boat steaming to possible flotsam
2154     2154 ALL Gun timing error Gun 5-3 error (ms) : -1.1
2508     2508 ALL Gun timing error Gun 5-3 error (ms) : -1.2
2696-2713     2696-2713 2378-2401 Bird depth out of spec Bird C7-9
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 12:03:20utc 30-Jul-2002