ACQUISITION REPORT Sequence-0462
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4880A462
  Preplot G01A4880
  Direction 198.0°
  SOL Date 19:41:45utc 30-May-2002
  EOL Date 01:32:11utc 31-May-2002
 Attributes:  
   Wind Force 11.0 [knots] Dir NW
   Swell Height 2.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 75.0 254.0 [meters]
   Bottomspeed  4.5 4.1 [knots]
   Featherangle port -3.8 port -3.1 [deg]
   Cable noise 6.13 5.78 [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)   4222 - 4221  
   SOL Dummy Record(s) 4220 - 4211 4220 - 4211 19:40:24 - 19:41:37
   FSP Start of Line 4210 4210 19:41:45
   MSP 2375 2375 23:59:56
   LSP End of Line 1766 1766 01:32:11
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1765 - 1764  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4210 - 1766 4210 - 1766 19:41:45-01:32:11 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 7.0m    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1026mB, pressure now 1026mB. Low frequency strumming Str 6 channels 1841 - 1875. Occassional burst of swell noise present on records,approx 5-10 µB, affecting 5 % of traces.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4222 - 3793 4222 - 3793 1 1873  
  3792 - 3363 3792 - 3363 2 1874  
  3362 - 2933 3362 - 2933 1 1875  
  2932 - 2503 2932 - 2503 2 1876  
  2502 - 2073 2502 - 2073 1 1877  
  2072 - 1764 2072 - 1764 2 1878  
Stream 2
   Shot(s) Files Deck Reel Remark
  4222 - 3793 4222 - 3793 3 1873  
  3792 - 3363 3792 - 3363 4 1874  
  3362 - 2933 3362 - 2933 3 1875  
  2932 - 2503 2932 - 2503 4 1876  
  2502 - 2073 2502 - 2073 3 1877  
  2072 - 1764 2072 - 1764 4 1878  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 353, 377, 744 Killed traces  
ALL     ALL 337, 349, 1553, 791 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
ALL     ALL 1-5 Bird depth out of spec Bird C1-1 max depth 11.2 m
4035-3998     4035-3998 51-67 Bird depth out of spec Bird C1-4 min depth 4.3 m
3540-3520     3540-3520 2259-2275 Bird depth out of spec Bird C7-4 max depth 10.3 m
3539-3510     3539-3510 2675-2691 Bird depth out of spec Bird C8-6 max depth 11.2 m
3536-3516     3536-3516 2283-2299 Bird depth out of spec Bird C7-5 max depth 10.1 m
3522-3513     3522-3513 2699-2715 Bird depth out of spec Bird C8-7 max depth 9.6 m
3166-3105     3166-3105 2228-2294 Streamer noise Low frequency noise dt currents approx 40uB
3166-3105     3166-3105 2591-2661 Streamer noise Low frequency noise dt currents approx 40uB
3162-3119     3162-3119 1841-1905 Streamer noise Low frequency noise dt currents approx 40uB
3139-3084     3139-3084 1906-1960 Streamer noise Low frequency noise dt currents approx 40uB
3129-3068     3129-3068 2295-2362 Streamer noise Low frequency noise dt currents approx 40uB
3128-3067     3128-3067 2662-2732 Streamer noise Low frequency noise dt currents approx 40uB
3111-3065     3111-3065 1960-1994 Streamer noise Low frequency noise dt currents approx 40uB
3084-3043     3084-3043 1995-2030 Streamer noise Low frequency noise dt currents approx 40uB
3083-3036     3083-3036 2733-2779 Streamer noise Low frequency noise dt currents approx 40uB
2433-2423     2433-2423 2931-2944 Bird depth out of spec Bird C8-17
1830     1830 ALL External header lost External header not recorded
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
4204-4190     4204-4190 NONE Bird depth out of spec Bird C2-11
4071-4036     4071-4036 NONE Bird depth out of spec Bird C1-4
3997-3957     3997-3957 NONE Bird depth out of spec Bird C1-4
3938-3872     3938-3872 NONE Bird depth out of spec Bird C1-4
3803-3785     3803-3785 NONE Bird depth out of spec Bird C1-4
3779-3768     3779-3768 NONE Bird depth out of spec Bird C1-2
3549-3519     3549-3519 NONE Bird depth out of spec Bird C8-4
3532-3512     3532-3512 NONE Bird depth out of spec Bird C7-6
3531-3504     3531-3504 NONE Bird depth out of spec Bird C8-8
3488-3459     3488-3459 NONE Bird depth out of spec Bird C2-11
3406-3392     3406-3392 NONE Bird depth out of spec Bird C8-17
3215-3194     3215-3194 NONE Bird depth out of spec Bird C8-4
3213-3187     3213-3187 NONE Bird depth out of spec Bird C7-4
2942-2908     2942-2908 NONE Bird depth out of spec Bird C2-11
2940-2929     2940-2929 NONE Bird depth out of spec Bird C1-4
2894-2880     2894-2880 NONE Bird depth out of spec Bird C8-4
2873-2845     2873-2845 NONE Bird depth out of spec Bird C7-4
2804-2782     2804-2782 NONE Bird depth out of spec Bird C2-11
2779-2765     2779-2765 NONE Bird depth out of spec Bird C7-5
2775-2733     2775-2733 NONE Bird depth out of spec Bird C2-11
2698-2636     2698-2636 NONE Bird depth out of spec Bird C2-11
2587-2572     2587-2572 NONE Bird depth out of spec Bird C7-4
2572-2476     2572-2476 NONE Bird depth out of spec Bird C8-17
2556-2503     2556-2503 NONE Bird depth out of spec Bird C2-11
2520-2500     2520-2500 NONE Bird depth out of spec Bird C1-4
2422-2406     2422-2406 NONE Bird depth out of spec Bird C8-17
2404-2367     2404-2367 NONE Bird depth out of spec Bird C8-17
2110-2090     2110-2090 NONE Bird depth out of spec Bird C1-4
Comment
Shot(s)     File(s) Trace(s) Type Remark
3530     3530 ALL Currents Current is affecting near traces
3170     3170 ALL Currents Current is affecting near traces
2488     2488 ALL Currents Current is affecting near traces
2088-1900     2088-1900 ALL Defraction noise Defraction noise affecting traces


 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 07:32:34utc 04-Jun-2002