ACQUISITION REPORT Sequence-0064
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A2992A064
  Preplot G01A2992
  Direction 18.0°
  SOL Date 15:10:32utc 19-Nov-2001
  EOL Date 17:15:19utc 19-Nov-2001
 Attributes:  
   Wind Force 20.0 [knots] Dir SSE
   Swell Height 1.5 [meters] Dir SSE
   Propellor rpm 122 [avg]  
   Propellor pitch 95 [avg]  
       
  SOL EOL  
   Waterdepth 50.0 42.0 [meters]
   Bottomspeed  3.9 4.3 [knots]
   Featherangle port -12.1 port -9.0 [deg]
   Cable noise 6.7 7.6 [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)   3100 - 3101  
   SOL Dummy Record(s)      
   FSP Start of Line 3283 3283 15:10:32
   MSP      
   LSP End of Line 4104 4104 17:15:19
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4105 - 4106  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3283 - 3574 3283 - 3574 15:10:32-15:57:29 Prime 0 Scratched All data scratched d/t no coverage d/t propulsion failure
    3575 - 4104 3575 - 4104 15:57:39-17:15:19 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7m. FGSP of line was 3575 d/t loss of propulsion/vsl drifting offline. Source firing sequence incorrect, Source 1 fires even sp's.    
   Recording QC GUN SEQ SWAPPED - STBD GUNS FIRE ON even SP'S Random gun depths frequently deep/shallow d/t weather. Filter delay 5.6ms. Frontsheet Set 3. Gundepth calibrated at atmospheric pressure 1004mB, pressure now 1027mB. Str 8 Bird 1 mask on External Header, occasionally deep, 8.1m. Array 2 bad manifold sensor - pressure good.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3100 - 3710 3100 - 3710 1 262  
  3711 - 4106 3711 - 4106 1 263  
Stream 2
   Shot(s) Files Deck Reel Remark
  3100 - 3710 3100 - 3710 3 262  
  3711 - 4106 3711 - 4106 4 263  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 304, 1127 Noisy Traces  
3718     3718 ALL Gun Timing Error Gun 3-3 error (ms) : 2.2
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2301 Fails Crossfeed  
ALL     ALL 1191, 2164, 2806 Weak Traces Weak trace: 1191, 2164, 2806 more than -6 dB down
ALL     ALL 1-12, 16, 369-379, 737-749, 751-752, 758, 764, 1105-1113, 1126, 1473, 1841-1842, 1844-1845, 1848, 1850, 1852, 1855, 2209-2211, 2213-2214, 2216-2217, 2223, 2577 Slope alarm > 5% of total line
3490-3555     3490-3555 NONE Bird depth out of spec Bird C6-12
3503     3503 NONE Bird depth out of spec Bird C1-4
3557-3561     3557-3561 NONE Bird depth out of spec Bird C6-12
3560     3560 NONE Bird depth out of spec Bird C6-4
3591-3594     3591-3594 NONE Bird depth out of spec Bird C4-4
3607-3615     3607-3615 NONE Bird depth out of spec Bird C6-12
3638-3640     3638-3640 NONE Bird depth out of spec Bird C2-10
3645     3645 NONE Bird depth out of spec Bird C2-10
3654-3655     3654-3655 NONE Bird depth out of spec Bird C6-4
3660     3660 ALL Gun timing error Gun 2-1 error (ms) : -1.7
3686-3687     3686-3687 NONE Bird depth out of spec Bird C3-16
3689-3698     3689-3698 NONE Bird depth out of spec Bird C3-16
3700     3700 NONE Bird depth out of spec Bird C3-16
3716     3716 ALL Gun timing error Gun 3-3 error (ms) : 1.7
3754-3755     3754-3755 NONE Bird depth out of spec Bird C4-3
3757-3758     3757-3758 NONE Bird depth out of spec Bird C4-3
3772     3772 NONE Bird depth out of spec Bird C8-16
3780-3781     3780-3781 NONE Bird depth out of spec Bird C3-16
3800     3800 ALL Gun timing error Gun 3-3 error (ms) : 1.2
3843     3843 NONE Bird depth out of spec Bird C6-4
3864     3864 ALL Gun timing error Gun 3-3 error (ms) : 1.1
3928     3928 ALL Gun timing error Gun 3-3 error (ms) : 1.6
3930     3930 ALL Gun timing error Gun 3-3 error (ms) : 1.3
3932     3932 ALL Gun timing error Gun 3-3 error (ms) : 1.3
3934     3934 ALL Gun timing error Gun 3-3 error (ms) : 1.1
3935     3935 NONE Bird depth out of spec Bird C2-10
3993-3998     3993-3998 NONE Bird depth out of spec Bird C4-4
4041     4041 NONE Bird depth out of spec Bird C6-4
4042     4042 ALL Gun timing error Gun 3-3 error (ms) : 1.5
4044     4044 ALL Gun timing error Gun 3-3 error (ms) : 1.3
4048     4048 ALL Gun timing error Gun 3-3 error (ms) : 1.1
4080     4080 ALL Gun timing error Gun 3-3 error (ms) : 1.2
4102     4102 ALL Gun timing error Gun 3-3 error (ms) : -1.1
4104     4104 ALL Gun timing error Gun 3-3 error (ms) : -1.2
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Occ swell noise seen on all cables approx 5-10%


 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 20:04:58utc 19-Nov-2001