ACQUISITION REPORT Sequence-0305
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3712A305
  Preplot G01A3712
  Direction 18.0°
  SOL Date 10:12:45utc 08-Mar-2002
  EOL Date 16:55:11utc 08-Mar-2002
 Attributes:  
   Wind Force 12.0 [knots] Dir E
   Swell Height 1.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 60.0 48.1 [meters]
   Bottomspeed  3.4 4.2 [knots]
   Featherangle port -7.0 port -4.3 [deg]
   Cable noise 7.2 5.72 [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)   1627 - 1731  
   SOL Dummy Record(s) 1629 - 1761 1629 - 1761 02:11:43 - 10:12:34
   FSP Start of Line 1762 1762 10:12:45
   MSP      
   LSP End of Line 4258 4258 16:55:11
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4259 - 4260  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1762 - 4258 1762 - 4258 10:12:45-16:55:11 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1027mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. STB guns firing on ODD SP. Erratic gun depth reading d/t swell.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1730 - 2159 1730 - 2159 2 1237  
  2160 - 2589 2160 - 2589 1 1238  
  2590 - 3019 2590 - 3019 2 1239  
  3020 - 3449 3020 - 3449 1 1240  
  3450 - 3879 3450 - 3879 2 1241  
  3880 - 4260 3880 - 4260 1 1242  
Stream 2
   Shot(s) Files Deck Reel Remark
  1730 - 2159 1730 - 2159 3 1237  
  2160 - 2589 2160 - 2589 4 1238  
  2590 - 3019 2590 - 3019 3 1239  
  3020 - 3449 3020 - 3449 4 1240  
  3450 - 3879 3450 - 3879 3 1241  
  3880 - 4260 3880 - 4260 4 1242  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 2599 Killed traces  
ALL     ALL 1476, 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 109, 1657 Spiking Trace(s)  
2503-2508     2503-2508 2259-2275 Bird depth out of spec Bird C7-4
3536-3552     3536-3552 515-531 Bird depth out of spec Bird C2-8
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 occasionally deep, 8.1 - 8.4m
ALL     ALL ALL Source depth out of spec Source-depth for gun position 1-6 occasionally sligtly above 5.4 meter
ALL     ALL 2577-2581 Bird depth out of spec Bird C8-1 occasionally deep, 8.1 - 8.4m
ALL     ALL 1-17, 20, 22, 369-383, 385, 389-392, 737-758, 760-761, 763-764, 1105-1113, 1122-1123, 1125-1126, 1130-1133, 1135, 1473, 1481-1485, 1487, 1489, 1841-1857, 1860-1867, 2209-2227, 2229-2232, 2236, 2239, 2577, 2585-2589, 2591, 2601-2605 Slope alarm > 5% of total line
2038-2074     2038-2074 515-531 Bird depth out of spec Bird C2-8 erratic dept reading
2138     2138 ALL Gun timing error Gun 5-4 error (ms) : -1.1
2573-2584     2573-2584 2651-2667 Bird depth out of spec Bird C8-5
2842-2854     2842-2854 2259-2275 Bird depth out of spec Bird C7-4
2847-2858     2847-2858 2283-2299 Bird depth out of spec Bird C7-5
2937-2949     2937-2949 2651-2667 Bird depth out of spec Bird C8-5
3302-3312     3302-3312 2259-2275 Bird depth out of spec Bird C7-4
3408     3408 ALL Gun timing error Gun 5-3 error (ms) : -1.2
3444     3444 ALL Gun timing error Gun 5-3 error (ms) : -1.1
3676     3676 ALL Gun timing error Gun 5-1 error (ms) : -1.6
3698     3698 ALL Gun timing error Gun 5-1 error (ms) : 1.6
4016-4033     4016-4033 2627-2643 Bird depth out of spec Bird C8-4
4020-4034     4020-4034 2651-2667 Bird depth out of spec Bird C8-5
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Burst of swell noise affecting 5% of traces, 7 µB 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 17:07:31utc 08-Mar-2002