ACQUISITION REPORT Sequence-0818
 Survey:  
  Client ESSO Australia Pty Ltd
  Area Northern Fields 3D
  Vessel Geco Beta
  JobNumber 9170C
  Survey Type 3D, Dual source, 8 Streamers
   
 Sequence  
  Linename G01A1600PBA818
  Preplot G01A1600BA
  Direction 288.0°
  SOL Date 05:42:13utc 27-Feb-2002
  EOL Date 06:18:47utc 27-Feb-2002
 Attributes:  
   Wind Force 28.0 [knots] Dir SW
   Swell Height 2.5 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 40.0 38.0 [meters]
   Bottomspeed  4.3 4.3 [knots]
   Featherangle sb +9.6 sb +8.2 [deg]
   Cable noise 11.6 9.0 [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)   5096 - 5097  
   SOL Dummy Record(s) 5098 - 5127 5098 - 5127 05:38:00 - 05:42:04
   FSP Start of Line 5128 5128 05:42:13
   MSP      
   LSP End of Line 5387 5387 06:18:47
   EOL Dummy Record(s) 5388 - 5397 5388 - 5397 06:18:56 - 06:20:11
   EOL Noise Record(s)   5398 - 5399  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    5128 - 5387 5128 - 5387 05:42:13-06:18:47 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m. NAVRT External Header Block defines Job No. 9170C    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1020mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  5096 - 5399 5096 - 5399 1 10018  
Stream 2
   Shot(s) Files Deck Reel Remark
  5096 - 5399 5096 - 5399 3 10018  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1476, 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 109, 1657, 2307, 2772 Spiking Trace(s)  
ALL     ALL 1495 Noisy Trace(s)  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2034 Crossfeed Fails crossfeed test
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 occasionally deep, 8.1 - 8.2m
ALL     ALL 1, 3-5, 9, 12, 369, 371, 737-739, 741, 744, 1105-1110, 1841-1850, 2209-2220, 2222-2225, 2229-2230, 2577, 2585-2589, 2591, 2601-2602 Slope alarm > 5% of total line
Comment
Shot(s)     File(s) Trace(s) Type Remark
5128     5128 ALL Swell Noise Burst of swell noise affecting 15-20% of traces, 9µB RMS


 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 18:25:12utc 01-Mar-2002