ACQUISITION REPORT Sequence-0329
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4960B329
  Preplot G01A4960
  Direction 198.0°
  SOL Date 08:21:49utc 25-Mar-2002
  EOL Date 13:34:06utc 25-Mar-2002
 Attributes:  
   Wind Force 17.0 [knots] Dir ENE
   Swell Height 1.5 [meters] Dir ENE
   Propellor rpm 122 [avg]  
   Propellor pitch 99 [avg]  
       
  SOL EOL  
   Waterdepth 83.0 301.0 [meters]
   Bottomspeed  4.75 4.0 [knots]
   Featherangle sb +4.2 port -6.3 [deg]
   Cable noise 4.6 14.8 [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)   4225 - 4224  
   SOL Dummy Record(s) 4223 - 4214 4223 - 4214 08:20:33 - 08:21:42
   FSP Start of Line 4213 4213 08:21:49
   MSP      
   LSP End of Line 1799 1799 13:34:06
   EOL Dummy Record(s) 1798 - 1798 1798 - 1798 13:34:15 - 13:34:15
   EOL Noise Record(s)   1798 - 1798  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4213 - 1799 4213 - 1799 08:21:49-13:34:06 Reshoot 16 Valid Reshoot of sequence 324
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1009mB. **Line contains duplicate file number (1798) Eol noise record dulicated with LSP of line.**    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4225 - 3796 4225 - 3796 1 1349  
  3795 - 3366 3795 - 3366 2 1350  
  3365 - 2936 3365 - 2936 1 1351  
  2935 - 2506 2935 - 2506 1 1352  
  2505 - 2076 2505 - 2076 2 1353  
  2075 - 1799 2075 - 1799 1 1354  
Stream 2
   Shot(s) Files Deck Reel Remark
  4225 - 3796 4225 - 3796 3 1349  
  3795 - 3366 3795 - 3366 3 1350  
  3365 - 2936 3365 - 2936 4 1351  
  2935 - 2506 2935 - 2506 3 1352  
  2505 - 2076 2505 - 2076 4 1353  
  2075 - 1799 2075 - 1799 3 1354  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1159 Noisy Trace(s)  
ALL     ALL 1476 Weak Trace(s) Trace signal less than -6dB of nominal value
2987-2976     2987-2976 419-435 Streamer depth Bird 4 cable 2 deep max 9.6 mtrs
2815-2796     2815-2796 419-435 Streamer depth Bird 4 cable 2 deep max 9.6 mtrs
1798     1798 ALL Bad SP Lsp of line 1798 bad d/t system error
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-10, 12, 369-373, 738, 744, 1841-1846, 2209-2220, 2223, 2577, 2585-2586, 2588 Slope alarm > 5% of total line
ALL     ALL 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
4005     4005 NONE Gun Timing Error Gun 1-2 error (ms) : -1.6
3901     3901 ALL Gun timing error Gun 1-2 error (ms) : -1.7
2410     2410 ALL Swell Noise Random swell noise slightly increasing ~5%
2000     2000 ALL Swell Noise Swell noise now increasing to 10-20%
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 18:56:29utc 25-Mar-2002