ACQUISITION REPORT Sequence-0853
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170C
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A0002JXT853
  Preplot G01A0002XT
  Direction 224.0°
  SOL Date 13:22:48utc 25-May-2002
  EOL Date 14:33:31utc 25-May-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir SE
   Swell Height 1.0 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 55.0 58.0 [meters]
   Bottomspeed  4.9 4.7 [knots]
   Featherangle port -2.1 port -12.8 [deg]
   Cable noise 6.6 6.2 [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 -6.0 3542.0 3 8
2 PORT -345.0 -25.0 -6.0 3542.0 3 8

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 -7.0 4600 Nessie-3 12.5 368 0001-0368
2 STBD -520.0 250.0 -7.0 4600 Nessie-3 12.5 368 0369-0736
3 STBD -520.0 150.0 -7.0 4600 Nessie-3 12.5 368 0737-1104
4 STBD -520.0 50.0 -7.0 4600 Nessie-3 12.5 368 1105-1472
5 PORT -520.0 -50.0 -7.0 4600 Nessie-3 12.5 368 1473-1840
6 PORT -520.0 -150.0 -7.0 4600 Nessie-3 12.5 368 1841-2208
7 PORT -520.0 -250.0 -7.0 4600 Nessie-3 12.5 368 2209-2576
8 PORT -520.0 -350.0 -7.0 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)   1412 - 1411  
   SOL Dummy Record(s) 1410 - 1401 1410 - 1401 13:21:34 - 13:22:40
   FSP Start of Line 1400 1400 13:22:48
   MSP      
   LSP End of Line 840 840 14:33:31
   EOL Dummy Record(s)      
   EOL Noise Record(s)   839 - 839  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1400 - 840 1400 - 840 13:22:48-14:33:31 Infill 16 Valid  
 Remarks:      
   Navigation Streamer depth 7mtrs    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1032mB. Low frequency strumming Str 6 channels 1841 - 1875. Strong reflection events during rig pass. Only one EOL noise file recorded.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1412 - 983 1412 - 983 2 10054  
  982 - 839 982 - 839 1 10055 Only one EOL noise file recorded.
Stream 2
   Shot(s) Files Deck Reel Remark
  1412 - 983 1412 - 983 4 10054  
  982 - 839 982 - 839 3 10055 Only one EOL noise file recorded.

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL-841 353, 377, 744, 2764 Killed traces  
ALL     ALL 1857 Noisy Trace(s)  
ALL     ALL 337, 349, 791, 1553 Spiking Trace(s)  
1041-1030     1041-1030 2259-2275 Bird depth out of spec Bird C7-4 max depth 9.2mtrs
850-844     850-844 2931-2944 Bird depth out of spec Bird C8-17 max depth 9.8mtrs
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
1118-1081     1118-1081 NONE Bird depth out of spec Bird C7-4
1050-1042     1050-1042 NONE Bird depth out of spec Bird C7-4
1029-1005     1029-1005 NONE Bird depth out of spec Bird C7-4
1015-1004     1015-1004 NONE Bird depth out of spec Bird C2-10
995-975     995-975 NONE Bird depth out of spec Bird C2-11
980-965     980-965 NONE Bird depth out of spec Bird C8-4
915-891     915-891 NONE Bird depth out of spec Bird C8-17
863-851     863-851 NONE Bird depth out of spec Bird C8-17
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL NONE Bird no comms Bird C4-2, C8-18


 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 15:00:15utc 25-May-2002