ACQUISITION REPORT Sequence-0020
 Survey:  
  Client Bass Strait Oil Company
  Area Vic/P42 Gippsland Basin
  Vessel GECO_BETA
  JobNumber 9226
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename VP421312P020
  Preplot VP421312
  Direction 13.0°
  SOL Date 16:31:14utc 01-Aug-2002
  EOL Date 20:32:06utc 01-Aug-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir NE
   Swell Height 0.5 [meters] Dir N
   Propellor rpm 137 [avg]  
   Propellor pitch 90 [avg]  
       
  SOL EOL  
   Waterdepth 66.0 56.0 [meters]
   Bottomspeed  4.7 4.7 [knots]
   Featherangle port -3.5 sb +1.4 [deg]
   Cable noise 11.1 5.0 [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)   2828 - 2827  
   SOL Dummy Record(s) 2826 - 2797 2826 - 2797 16:27:22 - 16:31:06
   FSP Start of Line 2796 2796 16:31:14
   MSP      
   LSP End of Line 974 974 20:32:06
   EOL Dummy Record(s)      
   EOL Noise Record(s)   973 - 972  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2796 - 974 2796 - 974 16:31:14-20:32:06 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 8.0mtr.    
   Recording QC Frontsheet Set 1. Gundepth calibrated at atmospheric pressure 1032mB, pressure now 1016mB. Excessive Noise on SOL Noise record dt bend in cable from short run in.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2828 - 2399 2828 - 2399 2 86  
  2398 - 1969 2398 - 1969 1 87  
  1968 - 1539 1968 - 1539 2 88  
  1538 - 1109 1538 - 1109 1 89  
  1108 - 972 1108 - 972 2 90  
Stream 2
   Shot(s) Files Deck Reel Remark
  2828 - 2399 2828 - 2399 4 86  
  2398 - 1969 2398 - 1969 3 87  
  1968 - 1539 1968 - 1539 4 88  
  1538 - 1109 1538 - 1109 3 89  
  1108 - 972 1108 - 972 4 90  

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  
2720-2707     2720-2707 2255-2291 Monowing wash Low frequency, high amplitude noise due to monowing wash
Warning
Shot(s)     File(s) Trace(s) Type Remark
2797-2786     2797-2786 369-373 Bird depth out of spec Bird C2-1
2700     2700 ALL Gun timing error Gun 5-3 error (ms) : -1.2
2695-2679     2695-2679 2258-2281 Bird depth out of spec Bird C7-4
2676-2649     2676-2649 2258-2281 Bird depth out of spec Bird C7-4
2644-2626     2644-2626 2258-2281 Bird depth out of spec Bird C7-4
2633-2616     2633-2616 2306-2329 Bird depth out of spec Bird C7-6
2631-2613     2631-2613 2282-2305 Bird depth out of spec Bird C7-5
2628-2595     2628-2595 2330-2353 Bird depth out of spec Bird C7-7
2615-2600     2615-2600 2306-2329 Bird depth out of spec Bird C7-6
1647-1637     1647-1637 74-97 Bird depth out of spec Bird C1-5
1641-1628     1641-1628 490-513 Bird depth out of spec Bird C2-7
1597-1586     1597-1586 98-121 Bird depth out of spec Bird C1-6
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 06:45:17utc 02-Aug-2002