ACQUISITION REPORT Sequence-0121
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3568A121
  Preplot G01A3568
  Direction 198.0°
  SOL Date 15:25:40utc 16-Dec-2001
  EOL Date 19:24:45utc 16-Dec-2001
 Attributes:  
   Wind Force 12.0 [knots] Dir SSW
   Swell Height 1.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 47.0 58.0 [meters]
   Bottomspeed  4.9 4.4 [knots]
   Featherangle sb +7.4 port -8.5 [deg]
   Cable noise 12.6 10.1 [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)   4133 - 4132  
   SOL Dummy Record(s) 4131 - 4102 4131 - 4102 15:21:54 - 15:25:32
   FSP Start of Line 4101 4101 15:25:40
   MSP      
   LSP End of Line 2220 2220 19:24:45
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2219 - 2218  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4101 - 2220 4101 - 2220 15:25:40-19:24:45 Prime 0 Scratched Line NTBP due to feather mismatch
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1015mB. Str7 Bird 1 mask on External Header, occasionally deep, 8.1m.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4133 - 3704 4133 - 3704 1 506  
  3703 - 3274 3703 - 3274 2 507  
  3273 - 2844 3273 - 2844 1 508  
  2843 - 2414 2843 - 2414 1 509  
  2413 - 2219 2413 - 2219 2 510  
Stream 2
   Shot(s) Files Deck Reel Remark
  4133 - 3704 4133 - 3704 3 506  
  3703 - 3274 3703 - 3274 4 507  
  3273 - 2844 3273 - 2844 3 508  
  2843 - 2414 2843 - 2414 4 509  
  2413 - 2219 2413 - 2219 4 510  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1191, 2307 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 2871 Noisy Trace(s)  
3532-3524     3532-3524 ALL Guns Disabled No guns fired due to TRISOR reboot
3522     3522 ALL Gun timing error Gun 6-2 error (ms) : 2.1
3520     3520 ALL Gun timing error Gun 6-2 error (ms) : -2.1
3085-3082     3085-3082 2283-2299 Bird depth out of spec Bird C7-5
3079-3062     3079-3062 2235-2251 Bird depth out of spec Bird C7-3
2815     2815 ALL Gun timing error Gun 1-2 error (ms) : -1.7
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 deep all line approx. 7.8 - 8.2m
ALL     ALL 1227, 2301 Crossfeed Fails crossfeed test
ALL     ALL 1-13, 16, 369-380, 383, 737-752, 755, 758, 760, 763-764, 1105-1113, 1121-1126, 1128-1135, 1137, 1473, 1484-1485, 1489, 1499, 1841-1853, 1855-1856, 2209-2220, 2223, 2225, 2577, 2585-2588 Slope alarm > 5% of total line
3647-3535     3647-3535 ALL Nil TRISOR QC TRISOR QC crashed
3093-3080     3093-3080 2259-2275 Bird depth out of spec Bird C7-4
3088-3086     3088-3086 2283-2299 Bird depth out of spec Bird C7-5
3086-3080     3086-3080 2235-2251 Bird depth out of spec Bird C7-3
3078-3063     3078-3063 2603-2619 Bird depth out of spec Bird C8-3
3077-3065     3077-3065 2259-2275 Bird depth out of spec Bird C7-4
3074-3067     3074-3067 2627-2643 Bird depth out of spec Bird C8-4
3071-3062     3071-3062 2235-2251 Bird depth out of spec Bird C7-3
3067-3063     3067-3063 2603-2619 Bird depth out of spec Bird C8-3
3051-3034     3051-3034 2627-2643 Bird depth out of spec Bird C8-4
3029-3023     3029-3023 2355-2371 Bird depth out of spec Bird C7-8
2832-2812     2832-2812 NONE Bird depth out of spec Bird C7-4
2499-2488     2499-2488 51-67 Bird depth out of spec Bird C1-4
Comment
Shot(s)     File(s) Trace(s) Type Remark
4101     4101 ALL Swell Noise Swell noise affecting 5% of traces, 10 - 12 uB RMS ambient noise
3500     3500 ALL Swell Noise Swell noise affecting 5% of traces, 8-10 uB RMS ambient noise
3000     3000 ALL Swell Noise Swell noise increasing, affecting 5% of traces, 8-10 uB RMS ambient noise
2797     2797 ALL Swell Noise Swell noise increasing, affecting 10% of traces, 10 uB RMS ambient noise
2400     2400 ALL Coverage Coverage optained again
2220     2220 ALL Line Aborted Line aborted


 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 16:33:47utc 17-Dec-2001