ACQUISITION REPORT Sequence-0265
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A1280B265
  Preplot G01A1280
  Direction 198.0°
  SOL Date 23:37:31utc 08-Feb-2002
  EOL Date 01:01:24utc 09-Feb-2002
 Attributes:  
   Wind Force 25.0 [knots] Dir SW
   Swell Height 2.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 17.5 22.0 [meters]
   Bottomspeed  3.8 3.3 [knots]
   Featherangle port -18.4 port -1.3 [deg]
   Cable noise 7.1 30.5 [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)   2486 - 2485  
   SOL Dummy Record(s) 2484 - 2455 2484 - 2455 23:32:42 - 23:37:21
   FSP Start of Line 2454 2454 23:37:31
   MSP 2318 2318 23:59:59
   LSP End of Line 1972 1972 01:01:24
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1971 - 1970  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2454 - 1972 2454 - 1972 23:37:31-01:01:24 Prime 0 Scratched Line scratched dt swell noise
 Remarks:      
   Navigation Streamer depth 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1006mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. Bend noise on SOL noise record    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2486 - 2057 2486 - 2057 1 1077  
  2056 - 1970 2056 - 1970 2 1078  
Stream 2
   Shot(s) Files Deck Reel Remark
  2486 - 2057 2486 - 2057 3 1077  
  2056 - 1970 2056 - 1970 4 1078  

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 2307, 2782 Spiking Trace(s)  
ALL     ALL 1495 Noisy Trace(s)  
ALL     ALL 2034 Crossfeed Occasionally fails crossfeed
ALL     ALL- 1855 Killed traces  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL-1972 ALL Slope overload  
ALL     ALL 1-13, 15-17, 22, 369-383, 385, 389-390, 737-755, 757-758, 764, 1105-1113, 1126, 1473-1475, 1477-1478, 1480-1484, 2209-2237, 2239, 2577-2578, 2584-2593, 2601-2605, 2607 Slope alarm > 5% of total line
2480     2480 ALL Swell Noise Swell noise affecting approx. 5 % of traces. 6-8uB RMS
2454-2400     2454-2400 ALL Streamer noise Bend noise affecting tail third of cables.
2153-2152     2153-2152 ALL Source depth out of spec Source-depth for gun position 3-3 above 5.4 meter
2127     2127 ALL Swell Noise Swell noise affecting 5-10% of traces. 10-12uB RMS
2109     2109 ALL Gun timing error Gun 3-1 error (ms) : -1.9
2107     2107 ALL Gun timing error Gun 3-1 error (ms) : -1.7
2105     2105 ALL Gun timing error Gun 3-1 error (ms) : -1.7
2031     2031 ALL Swell Noise Swell noise affecting approx. 20% of traces. 24-28 uB RMS
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 05:18:14utc 09-Feb-2002