ACQUISITION REPORT Sequence-0330
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4528A330
  Preplot G01A4528
  Direction 18.0°
  SOL Date 16:33:35utc 25-Mar-2002
  EOL Date 22:09:48utc 25-Mar-2002
 Attributes:  
   Wind Force 20.0 [knots] Dir S
   Swell Height 2.5 [meters] Dir S
   Propellor rpm 120 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 186.0 54.0 [meters]
   Bottomspeed  4.8 4.4 [knots]
   Featherangle sb +8.2 port -1.1 [deg]
   Cable noise 13.6 5.8 [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)   1732 - 1733  
   SOL Dummy Record(s) 1734 - 1743 1734 - 1743 16:32:20 - 16:33:27
   FSP Start of Line 1744 1744 16:33:35
   MSP      
   LSP End of Line 4315 4315 22:09:48
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4316 - 4317  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1744 - 4315 1744 - 4315 16:33:35-22:09:48 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1011mB, pressure now 1018mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. STB guns firing on ODD SP.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1732 - 2161 1732 - 2161 2 1355  
  2162 - 2591 2162 - 2591 1 1356  
  2592 - 3021 2592 - 3021 2 1357  
  3022 - 3451 3022 - 3451 1 1358  
  3452 - 3881 3452 - 3881 2 1359  
  3882 - 4311 3882 - 4311 1 1360  
  4312 - 4317 4312 - 4317 1 1361  
Stream 2
   Shot(s) Files Deck Reel Remark
  1732 - 2161 1732 - 2161 4 1355  
  2162 - 2591 2162 - 2591 4 1356  
  2592 - 3021 2592 - 3021 3 1357  
  3022 - 3451 3022 - 3451 4 1358  
  3452 - 3881 3452 - 3881 3 1359  
  3882 - 4311 3882 - 4311 4 1360  
  4312 - 4317 4312 - 4317 3 1361  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1476 Weak Trace(s) Trace signal less than -6dB of nominal value
1871     1871 ALL Bad sp Bad ext header
3624-3638     3624-3638 419-435 Streamer depth Bird 2-4 deep max 9.5 mtrs (>9 mtrs for > 5 sp's)
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1633, 3782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL ALL Swell Noise Swell noise seen on all cables approx 20%
ALL     ALL NONE Monowing wash Occ cable depth fluctuations front end streamers 7 & 8 birds 3-6
ALL     ALL 1-14, 16-17, 369-383, 390, 737-753, 755-758, 760, 764, 1105-1106, 1109-1113, 1126, 1130, 1134-1135, 1489, 1841-1853, 1855-1856, 1873, 2209-2220, 2222-2225, 2577, 2585-2588, 2602 Slope alarm > 5% of total line
1792-1807     1792-1807 NONE Streamer depth Bird 7-4 deep max 8.8 mtrs
2240-2258     2240-2258 NONE Streamer depth Bird 8-5 deep max 8.8 mtrs
2369-2385     2369-2385 NONE Streamer depth Bird 8-4 deep max 9.4 mtrs
2372-2392     2372-2392 NONE Streamer depth Bird 8-5 deep max 8.9 mtrs
2377-2392     2377-2392 NONE Streamer depth Bird 7-4 deep max 9.3 mtrs
2382-2400     2382-2400 NONE Streamer depth Bird 7-4 deep max 9.2 mtrs
2389-2406     2389-2406 NONE Streamer depth Bird 7-6 deep max 8.3 mtrs
2576     2576 NONE Swell Noise Swell noise now increasing 0cc 25-30%
2817-2841     2817-2841 NONE Streamer depth Bird 7-3 shallow min 4.3 mtrs
2830-2843     2830-2843 NONE Streamer depth Bird 8-3 deep max 8.7 mtrs
3000     3000 ALL Swell Noise Swell noise now deacreasing back to approx 20%
3150-3170     3150-3170 NONE Streamer depth Bird 8-4 deep max 9.4 mtrs
3187-3208     3187-3208 NONE Streamer depth Bird 8-3 shallow min 4.9 mtrs
3191-3205     3191-3205 NONE Streamer depth Bird 8-4 shallow min 4.4 mtrs
3209-3233     3209-3233 NONE Streamer depth Bird 8-5 deep 9.2 mtrs
3256-3276     3256-3276 NONE Streamer depth Bird 7-4 deep max 9.2 mtrs
3258-3272     3258-3272 NONE Streamer depth Bird 7-3 deep max 8.3 mtrs
3700     3700 ALL Swell Noise Swell noise now decreasing futher approx 10%
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 22:48:53utc 25-Mar-2002