ACQUISITION REPORT Sequence-0039
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3040A039
  Preplot  G01A3040
  Direction 198.0°
  SOL Date 04:12:30utc 06-Nov-2001
  EOL Date 08:27:46utc 06-Nov-2001
 
 Attributes:  
   Wind Force 18.0 [knots] Dir SSW
   Swell Height 0.9 [meters] Dir SSW
   Propellor rpm 122 [avg]  
   Propellor pitch 95 [avg]  
       
  SOL EOL  
   Waterdepth 46.0 49.0 [meters]
   Bottomspeed  4.2 4.2 [knots]
   Featherangle port -2.1 port -3.5 [deg]
   Cable noise 6.54 15.0 [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 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)      
   FSP Start of Line 3967 3967 04:12:30
   MSP      
   LSP End of Line 2314 2314 08:27:46
   EOL Dummy Record(s)      
   EOL Noise Record(s)      
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3967 - 3785 3967 - 3785 04:12:30-04:38:58 Reshoot 16 Scratched Soft start is still in progress
    3784 - 2975 3784 - 2975 04:39:07-06:39:39 Reshoot 16 Valid FGSP: 3784 due to whale sighting, LGSP: 2975 due to swell.
    2974 - 2314 2974 - 2314 06:39:48-08:27:46 Reshoot 16 Scratched Scratched due to level of swell noise.
 Remarks:      
   Navigation Streamer depth at 7.0m GUN SEQ INCORRECT - STBD GUNS FIRE ON EVEN SP'S    
   Recording QC Filter delay 5.6ms. Frontsheet Set 3. Gundepth calibrated at atmospheric pressure 1004mB, pressure now 1012mB. Str 8 Bird 1 mask on External Header, constantly deep, 8.1m. Gun PI string 2 occ erratic FGSP # 3784, LGSP # 2975.    
Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3969 - 3361 3969 - 3361 2 163  
  3360 - 2931 3360 - 2931 1 164  
  2930 - 2501 2930 - 2501 2 165  
  2500 - 2314 2500 - 2314 1 166 No EOL noise file recorded
Stream 2
   Shot(s) Files Deck Reel Remark
  3969 - 3361 3969 - 3361 3 163  
  3360 - 2931 3360 - 2931 4 164  
  2930 - 2501 2930 - 2501 3 165  
  2500 - 2314 2500 - 2314 3 166 No EOL noise file recorded

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 304, 1127 Noisy Trace(s)  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1, 3-7, 9, 369-374, 377, 737-745, 747-749, 752, 764, 1105-1113, 1126, 1130, 1473, 1841, 2210 Slope alarm > 5% of total line
ALL     ALL 2301 Fails Crossfeed test  
ALL     ALL 1191, 1948 Weak Trace(s)  
3645-3643     3645-3643 NONE Bird depth out of spec Bird C6-3
3641-3631     3641-3631 NONE Bird depth out of spec Bird C6-3
3629-3628     3629-3628 NONE Bird depth out of spec Bird C6-3
3626-3625     3626-3625 NONE Bird depth out of spec Bird C6-3
3600     3600 NONE Bird depth out of spec Bird C6-3
3598-3574     3598-3574 NONE Bird depth out of spec Bird C6-3
3489     3489 NONE Bird depth out of spec Bird C6-3
3486-3485     3486-3485 NONE Bird depth out of spec Bird C6-3
3243     3243 ALL Gun timing error Gun 4-2 error (ms) : -1.6 
3085     3085 ALL Gun timing error Gun 4-2 error (ms) : 1.6 
3019     3019 ALL Gun timing error Gun 4-2 error (ms) : -1.6 
2975     2975 ALL Gun timing error Gun 4-2 error (ms) : -1.9 
2847     2847 ALL Gun timing error Gun 4-2 error (ms) : -1.6 
2800     2800 ALL Swell Noise  
2793     2793 ALL Gun timing error Gun 4-2 error (ms) : -1.6 
2776     2776 NONE Bird depth out of spec Bird C6-4
2700     2700 ALL Swell Noise Swell noise level increasing.
Comment
Shot(s)     File(s) Trace(s) Type Remark
3967-3966   ALL Soft start still in progress Recorded to tape.
3965-3787   ALL Soft start still in progress No data recorded to tape.
3786   ALL   Start recording to tape
3784   ALL FGSP First Good Shotpoint
2975     2975 ALL LGSP Last good Shotpoint due to swell noise.
2314     2314 ALL LSPR Last shotpoint recorded to 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 09:38:21utc 06-Nov-2001