ACQUISITION REPORT Sequence-0423
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4400A423
  Preplot G01A4400
  Direction 18.0°
  SOL Date 06:55:19utc 09-May-2002
  EOL Date 08:56:04utc 09-May-2002
 Attributes:  
   Wind Force 15.0 [knots] Dir NNW
   Swell Height 1.0 [meters] Dir NNW
   Propellor rpm 122 [avg]  
   Propellor pitch 100 [avg]  
       
  SOL EOL  
   Waterdepth 105.0 94.0 [meters]
   Bottomspeed  4.8 4.4 [knots]
   Featherangle port -0.1 port -1.0 [deg]
   Cable noise 4.9 13.3 [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 24
2 PORT -345.0 -25.0 -6.0 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 -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)   1661 - 1662  
   SOL Dummy Record(s) 1663 - 1692 1663 - 1692 06:51:31 - 06:55:12
   FSP Start of Line 1693 1693 06:55:19
   MSP      
   LSP End of Line 2600 2600 08:56:04
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4311 - 4312  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1693 - 2600 1693 - 2600 06:55:19-08:56:04 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m.    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1013mB. Low frequency strumming Str 6 channels 1841 - 1875. Occassional burst of swell noise present on records,approx 2-3 µB, affecting 5 % of traces.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1661 - 2090 1661 - 2090 1 1786  
  2091 - 2520 2091 - 2520 2 1787  
  2521 - 4312 2521 - 4312 1 1788  
Stream 2
   Shot(s) Files Deck Reel Remark
  1661 - 2090 1661 - 2090 3 1786  
  2091 - 2520 2091 - 2520 4 1787  
  2521 - 4312 2521 - 4312 3 1788  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 744, 2764 Killed Trace(s)  
ALL     ALL 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 337, 349, 791, 1553 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
2544-2600     2544-2600 369-461 Streamer noise Low frequency noise dt turning to avoid rig.
2549-2600     2549-2600 1-85 Streamer noise Low frequency noise dt turning to avoid rig.
2553-2600     2553-2600 737-867 Streamer noise Low frequency noise dt turning to avoid rig.
2560-2600     2560-2600 1105-1191 Streamer noise Low frequency noise dt turning to avoid rig.
2561-2600     2561-2600 1841-1899 Streamer noise Low frequency noise dt turning to avoid rig.
2570-2600     2570-2600 1473-1534 Streamer noise Low frequency noise dt turning to avoid rig.
2578-2600     2578-2600 2577-2665 Streamer noise Low frequency noise dt turning to avoid rig.
2582-2600     2582-2600 2209-2278 Streamer noise Low frequency noise dt turning to avoid rig.
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1316 Fails PS test  
Comment
Shot(s)     File(s) Trace(s) Type Remark
2495     2495 ALL Line Information Turn to Starboard to avoid Rig


 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 09:43:45utc 09-May-2002