ACQUISITION REPORT Sequence-0028
 Survey:  
  Client Bass Strait Oil Company
  Area Vic/P42 Gippsland Basin
  Vessel GECO_BETA
  JobNumber 9226
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename VP421152J028
  Preplot VP421152
  Direction 193.0°
  SOL Date 09:30:15utc 03-Aug-2002
  EOL Date 14:11:57utc 03-Aug-2002
 Attributes:  
   Wind Force 3.0 [knots] $(wind_dir)
   Swell Height 0.5 [meters] Dir S
   Propellor rpm 137 [avg]  
   Propellor pitch 90 [avg]  
       
  SOL EOL  
   Waterdepth 60.0 68.0 [meters]
   Bottomspeed  4.5 4.2 [knots]
   Featherangle sb +2.2 port -0.4 [deg]
   Cable noise 22.0 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)   1035 - 1036  
   SOL Dummy Record(s) 1037 - 1046 1037 - 1046 09:28:55 - 09:30:07
   FSP Start of Line 1047 1047 09:30:15
   MSP      
   LSP End of Line 2940 2940 14:11:57
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2941 - 2942  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1047 - 2940 1047 - 2940 09:30:15-14:11:57 Infill 16 Valid  
 Remarks:      
   Navigation Streamer depth 8.0 mtr    
   Recording QC Frontsheet Set 1. Gundepth calibrated at atmospheric pressure 1032mB, pressure now 1014mB. Excessive Noise on SOL Noise record dt bend in cable from short run in.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1035 - 1464 1035 - 1464 1 120  
  1465 - 1894 1465 - 1894 2 121  
  1895 - 2324 1895 - 2324 1 122  
  2325 - 2754 2325 - 2754 2 123  
  2755 - 2942 2755 - 2942 1 124  
Stream 2
   Shot(s) Files Deck Reel Remark
  1035 - 1464 1035 - 1464 3 120  
  1465 - 1894 1465 - 1894 4 121  
  1895 - 2324 1895 - 2324 3 122  
  2325 - 2754 2325 - 2754 4 123  
  2755 - 2942 2755 - 2942 3 124  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 109 Killed traces  
ALL     ALL 161, 304 Noisy Trace(s)  
ALL     ALL 1492, 2497 Weak Trace(s)  
1047-1063     1047-1063 2236-2288 Monowing wash Low frequency, high amplitude noise due to monowing wash
1055-1069     1055-1069 2625-2680 Monowing wash Low frequency, high amplitude noise due to monowing wash
1057-1073     1057-1073 2282-2305 Bird depth out of spec Bird C7-5 max depth 10 .8 mtr
1057-1068     1057-1068 2650-2673 Bird depth out of spec Bird C8-5 max depth 11.3 mtr
1061-1098     1061-1098 2674-2697 Bird depth out of spec Bird C8-6 max depth 11.9 mtr
1073-1082     1073-1082 2306-2329 Bird depth out of spec Bird C7-6 max depth 10.5 mtr
1073-1109     1073-1109 2698-2721 Bird depth out of spec Bird C8-7 max depth 11.8 mtr
1771     1771 ALL External header lost  
2279     2279 ALL External header lost  
2424     2424 ALL External header lost  
2698     2698 ALL Gun not fired Gun 6-2. did not fire, source volume : 3307 cu.in.
2712     2712 ALL Gun not fired Gun 6-2. did not fire, source volume : 3307 cu.in.
2716     2716 ALL Gun not fired Gun 6-2. did not fire, source volume : 3307 cu.in.
2718     2718 ALL Gun not fired Gun 6-2. did not fire, source volume : 3307 cu.in.
2722     2722 ALL Gun not fired Gun 6-2. did not fire, source volume : 3307 cu.in.
2746     2746 ALL Gun not fired Gun 6-2. did not fire, source volume : 3307 cu.in.
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-17, 19-20, 22, 369-383, 385, 737-746, 748, 1841-1855, 1857-1859, 1861-1862, 1864-1865, 2209-2232, 2235, 2577-2601, 2603, 2605, 2607, 2612 Slope alarm > 5% of total line
1051-1061     1051-1061 NONE Bird depth out of spec Bird C7-4
1075-1089     1075-1089 NONE Bird depth out of spec Bird C7-7
1077-1095     1077-1095 NONE Bird depth out of spec Bird C7-4
1097-1108     1097-1108 NONE Bird depth out of spec Bird C8-8
1115     1115 ALL Gun timing error Gun 2-3 error (ms) : -1.1
1115-1130     1115-1130 NONE Bird depth out of spec Bird C7-6
1127     1127 ALL Gun timing error Gun 2-3 error (ms) : -1.1
1442     1442 ALL Gun timing error Gun 5-3 error (ms) : -1.1
2043     2043 ALL Gun timing error Gun 2-3 error (ms) : 1.2
2646     2646 ALL Gun timing error Gun 5-3 error (ms) : 1.1
2752     2752 ALL Gun timing error Gun 6-1 error (ms) : 1.6
2817     2817 NONE Bird depth out of spec Bird C2-1
2934     2934 NONE Bird depth out of spec Bird C7-4
Comment
Shot(s)     File(s) Trace(s) Type Remark
2723-2743     2723-2743 NONE Gun disabled Gun 6-2. Source volume : 3307 cu.in.
2744     2744 ALL Gun enabled Gun 6-2. Source volume : 3542 cu.in.


 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 00:22:59utc 04-Aug-2002