ACQUISITION REPORT Sequence-004
 Survey:  
  Client Bass Strait Oil Company
  Area Vic/P42, GIPPSLAND BASIN
  Vessel GECO BETA
  JobNumber 9226
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename VP421024P004
  Preplot  VP1024
  Direction 193°
  SOL Date 20:43:00utc 28-Jul-2002
  EOL Date 22:29:53utc 28-Jul-2002

 Attributes:  
   Wind Force 12 [knots] Dir SW
   Swell Height 1.5 [meters] Dir SW
   Propellor rpm 125 [avg]  
   Propellor pitch 94 [avg]  
       
  SOL EOL  
   Waterdepth 61 67 [meters]
   Bottomspeed  3.7 3.7 [knots]
   Featherangle -7.3 port -6.5 port [deg]
   Cable noise 6.0 8.4 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Port Volume 3542 3542  
   Stbd Volume 3542 3542  
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) 975-976  
  SOL Dummy Record(s) 977-1006 977-1006  
  FSP Start of Line 1007 1007 20:43:00
  MSP      
  LSP End of Line 1632 1632 22:29:53
  EOL Dummy Record(s)      
  EOL Noise Record(s)   2959-2960  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
1007-1632  1007-1632  20:43:00 - 22:29:53 Prime 16 Valid  Line aborted dt auto fire
 Remarks:      
  Navigation Streamer depth at 8.0m    
  Recording QC Filter delay 5.6ms. Frontsheet Set 1. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1028mB. Str 6 Bird 12 reading bad depth.    
Auto fire at EOL noise records
Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
975-1404 975-1404 1 17  
1405-2960 1405-2960 2 18  
   
 
Stream 2
   Shot(s) Files Deck Reel Remark
975-1404 975-1404 3 17  
1405-2960 1405-2960 4 18  
 
 

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL ALL 1492 Weak Trace(s)
ALL ALL 161, 304 Noisy Trace(s)
ALL ALL 109 Spiking Trace(s)
1066 1066 ALL Externalheader Externalheader lost
1480 1480 ALL Externalheader Externalheader lost
 
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL ALL Bird depth out of spec Bird C6-12 bad depth reading
ALL ALL Bird depth out of spec Bird C8-4 ocassionally deep, 9.1-9.5m
1125-1138 1125-1138 Bird depth out of spec Bird C8-5
1166-1176 1166-1176 Bird depth out of spec Bird C7-5
1177-1189 1177-1189 Bird depth out of spec Bird C8-5
1201-1225 1201-1225 Bird depth out of spec Bird C8-5
1203-1227 1203-1227 Bird depth out of spec Bird C8-6
1256 1256 ALL Gun timing error Gun 5-3 error (ms):-1.1
Comment
Shot(s)     File(s) Trace(s) Type Remark
1632 1632 ALL Line information Last good SP before line aborted dt autofire

 
 List of used abbreviations
   SOL/EOL Start/End of line    Deg Degrees: e[0,360]
   FSP/LSP First/Last shotpoint of the line    rev Revolutions
   FCSP/LCSP First/Last chargeable shotpoint    utc Universal Time Coordinated
   MSP Midnight (last) shotpoint of the day    SPs Shotpoints
   FGSP/LGSP First/Last Good Shotpoint    CMP's Common midpoints
   FOSP/LOSP First/Last Overlap Shotpoint    NTBP Not to be processed
   FSP/LSP R/O First/Last Shotpoint Runout    SI Seismic Interference

TRILOGY INFORMATION MANAGER - ACQUISITION REPORT - GENERATED 23:33:23utc 28-Jul-2002