ACQUISITION REPORT Sequence-0038
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3216A038
  Preplot G01A3216
  Direction 18.0°
  SOL Date 20:44:05utc 05-Nov-2001
  EOL Date 00:50:13utc 05-Nov-2001
 Attributes:  
   Wind Force 15.0 [knots] Dir W
   Swell Height 1.5 [meters] Dir W
   Propellor rpm 122 [avg]  
   Propellor pitch 99 [avg]  
       
  SOL EOL  
   Waterdepth 61.0 50.0 [meters]
   Bottomspeed  4.9 4.6 [knots]
   Featherangle sb +9.3 sb +2.3 [deg]
   Cable noise 4.2 4.8 [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 2.0 0001 0001-0001 0001 0001 - 0001 0.00
2 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0036 0001-0036 0036 0001 - 0036 0.00
3 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0036 0001-0036 0036 0001 - 0036 0.00
4 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0001 0001-0001 0001 0001 - 0001 0.00
5 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0001-0368 0368 0001 - 0368 5.60
6 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0369-0736 0368 0369 - 0736 5.60
7 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0737-1104 0368 0737 - 1104 5.60
8 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1105-1472 0368 1105 - 1472 5.60
9 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1473-1840 0368 1473 - 1840 5.60
10 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1841-2208 0368 1841 - 2208 5.60
11 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 2209-2576 0368 2209 - 2576 5.60
12 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) 1624 - 1625 1624 - 1625 20:42:31 - 20:42:40
   FSP Start of Line 1634   20:44:05
   MSP 3135 3135 23:59:54
   LSP End of Line 3528 3528 00:50:13
   EOL Dummy Record(s)      
   EOL Noise Record(s)      
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1634 - 1635   -    -  Prime 0 Scratched NTBP
    1636 - 1869   -    -  Prime 0 Scratched No data recorded d/t airleak array 3
    1870 - 1913 1870 - 1913 21:20:28-21:26:38 Prime 0 Scratched NTBP d/t guns tuning in
    1914 - 3478 1914 - 3478 21:26:46-00:43:40 Prime 16 Valid LGSP due to whales ahead.
    3479 - 3528 3479 - 3528 00:43:48-00:50:13 Prime 16 Scratched Standby time, no guns firing.
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC FGSP 1914 D/T GUN AIRLEAK Filter delay 5.6ms. Frontsheet Set 3. Gundepth calibrated at atmospheric pressure 1004mB, pressure now 1030mB. Str 8 Bird 1 mask on External Header, constantly deep, 8.1m. Gun PI string 2 occ erratic LGSP # 3478 due to whales ahead.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1622 - 2293 1622 - 2293 1 159  
  2294 - 2723 2294 - 2723 2 160  
  2724 - 3153 2724 - 3153 1 161  
  3154 - 3480 3154 - 3480 2 162 Only one noise file recorded
Stream 2
   Shot(s) Files Deck Reel Remark
  1622 - 2293 1622 - 2293 3 159  
  2294 - 2723 2294 - 2723 4 160  
  2724 - 3153 2724 - 3153 3 161  
  3154 - 3480 3154 - 3480 4 162 Only one noise file recorded

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1191, 1948 Weak Channels Weak Channels more than -6dB down
ALL     ALL 2775, 1127, 301 Noisy Channels  
1634-1869       ALL Missing File Files not recorded by recording system
1870-1913     1870-1913 ALL Missing File NTBP - guns tuning in
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 5, 9, 369-371, 373, 377, 737-742, 744-745, 748, 763-764, 1105-1110, 1112-1113, 1126, 1130, 1473, 2210 Slope alarm > 5% of total line
2021     2021 NONE Bird depth out of spec Bird C6-3
2024     2024 NONE Bird depth out of spec Bird C6-3
2035     2035 NONE Bird depth out of spec Bird C6-3
2186     2186 NONE Bird depth out of spec Bird C6-3
2329     2329 NONE Bird depth out of spec Bird C6-3
2341     2341 ALL Gun timing error Gun 2-1 error (ms) : -1.6
2848     2848 NONE Bird depth out of spec Bird C6-3
2888     2888 ALL Gun timing error Gun 4-2 error (ms) : -1.6
2987     2987 NONE Bird depth out of spec Bird C6-3
2992-2993     2992-2993 NONE Bird depth out of spec Bird C6-3
3034     3034 ALL Gun timing error Gun 4-2 error (ms) : -1.6
3036     3036 ALL Gun timing error Gun 4-2 error (ms) : -1.8
3050     3050 ALL Gun timing error Gun 4-2 error (ms) : -1.7
3062     3062 ALL Gun timing error Gun 4-5 error (ms) : -1.1
3183     3183 NONE Bird depth out of spec Bird C6-3
3468     3468 NONE Bird depth out of spec Bird C6-3
Comment
Shot(s)     File(s) Trace(s) Type Remark
1870     1870 ALL FSP RECORDED  
1914     1914 ALL FGSP of line  
3478     3478 ALL LGSP Last good shotpoint due to whales
3528     3528 ALL LSPR Last shotpoint recorded on tape.


 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 02:48:07utc 06-Nov-2001