ACQUISITION REPORT Sequence-0115
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3440B115
  Preplot G01A3440
  Direction 198.0°
  SOL Date 14:12:40utc 09-Dec-2001
  EOL Date 19:24:50utc 09-Dec-2001
 Attributes:  
   Wind Force 12.0 [knots] Dir SW
   Swell Height 1.5 [meters] Dir E
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 50.0 66.0 [meters]
   Bottomspeed  4.2 4.6 [knots]
   Featherangle port -2.8 sb +3.3 [deg]
   Cable noise 0.0 14.0 [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)      
   SOL Dummy Record(s) 4150 - 3908 4150 - 3908 13:37:24 - 14:12:32
   FSP Start of Line 3907 3907 14:12:40
   MSP      
   LSP End of Line 1610 1610 19:24:50
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1609 - 1608  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3907 - 3826 3907 - 3826 14:12:40-14:24:26 Reshoot 0 Scratched Segment NTBP; still performing soft start
    3825 - 1610 3825 - 1610 14:24:34-19:24:50 Reshoot 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7. 0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017 mB, pressure now 1008 mB. Str 8 Bird 1 mask on External Header. No start of line noise records. Bird 8-17 intermittant. Swell noise increasing at EOL    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3915 - 3486 3915 - 3486 2 471  
  3485 - 3056 3485 - 3056 1 472  
  3055 - 2626 3055 - 2626 2 473  
  2625 - 2196 2625 - 2196 1 474  
  2195 - 1766 2195 - 1766 2 475  
  1765 - 1609 1765 - 1609 1 476  
Stream 2
   Shot(s) Files Deck Reel Remark
  3915 - 3486 3915 - 3486 4 471  
  3485 - 3056 3485 - 3056 3 472  
  3055 - 2626 3055 - 2626 4 473  
  2625 - 2196 2625 - 2196 3 474  
  2195 - 1766 2195 - 1766 4 475  
  1765 - 1609 1765 - 1609 3 476  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 1948, 2220 Killed traces  
ALL     ALL 1191, 2764, 2806 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 839, 1657, 2497 Spiking Trace(s)  
3824     3824 ALL Gun timing error Gun 5-2 error (ms) : 3.7
3147-3138     3147-3138 419-435 Bird depth out of spec Bird C2-4
3141-3134     3141-3134 443-459 Bird depth out of spec Bird C2-5
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2577-2581 Bird depth out of spec Bird C8-1 deep all line, max 8.5 m
ALL     ALL 2304 Crossfeed Fails crossfeed test
ALL     ALL 1-9, 11-12, 369-374, 376-380, 737-752, 755, 764, 1105-1113, 1126, 1130-1131, 1473, 1841-1842, 1845-1846, 1848-1850, 1852-1853, 1855-1856, 2577 Slope alarm > 5% of total line
3822     3822 ALL Gun timing error Gun 5-3 error (ms) : -1.1
3321     3321 ALL Gun timing error Gun 2-2 error (ms) : -1.7
3130-3119     3130-3119 467-483 Bird depth out of spec Bird C2-6
2933     2933 ALL Gun timing error Gun 2-2 error (ms) : -1.6
2401-2383     2401-2383 443-459 Bird depth out of spec Bird C2-5
2191     2191 ALL Gun timing error Gun 2-2 error (ms) : -1.7
2053-2035     2053-2035 2259-2275 Bird depth out of spec Bird C7-4
Comment
Shot(s)     File(s) Trace(s) Type Remark
3915     3915 ALL First recorded Shotpoint  
3907     3907 ALL General information First recorded shotpoint with QC
3825     3825 ALL Gun volume Source at full volume, FGSP
3825     3825 ALL Swell Noise Swellnoise affecting 10% of traces, RMS 11µB
3550     3550 ALL Swell Noise Swellnoise affecting 10% of traces, RMS 10µB
2052     2052 ALL Swell Noise Swellnoise affecting 10% of traces, RMS 10µB


 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 22:06:22utc 09-Dec-2001