ACQUISITION REPORT Sequence-0312
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3744A312
  Preplot G01A3744
  Direction 18.0°
  SOL Date 04:12:39utc 12-Mar-2002
  EOL Date 06:42:15utc 12-Mar-2002
 Attributes:  
   Wind Force 16.0 [knots] Dir SSW
   Swell Height 2.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 86 [avg]  
       
  SOL EOL  
   Waterdepth 53.0 48.1 [meters]
   Bottomspeed  4.7 4.7 [knots]
   Featherangle sb +6.1 sb +4.9 [deg]
   Cable noise 8.75 6.9 [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)   3118 - 3119  
   SOL Dummy Record(s)      
   FSP Start of Line 3120 3120 04:12:39
   MSP      
   LSP End of Line 4266 4266 06:42:15
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4267 - 4268  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3120 - 4266 3120 - 4266 04:12:39-06:42:15 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1028mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. STB guns firing on ODD SP. Bird C2-18 masked on external header from SP 3212    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3118 - 3547 3118 - 3547 1 1279  
  3548 - 3977 3548 - 3977 2 1280  
  3978 - 4268 3978 - 4268 1 1281  
Stream 2
   Shot(s) Files Deck Reel Remark
  3118 - 3547 3118 - 3547 3 1279  
  3548 - 3977 3548 - 3977 4 1280  
  3978 - 4268 3978 - 4268 3 1281  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 2599 Killed traces  
ALL     ALL 1476, 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1657, 2600, 2772, 2389, 2782 Spiking Trace(s)  
3591     3591 ALL Gun timing error Gun 1-2 error (ms) : -2.2
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1, occasional depth 8.1-8.4m
ALL     ALL 1-14, 16-17, 20, 22, 369-384, 390, 737-761, 763-764, 769, 1105-1116, 1121-1126, 1128-1135, 1147, 1473, 1481-1485, 1487, 1489, 1841-1858, 1860-1867, 2209-2220, 2222-2226, 2229-2230, 2232, 2577, 2585-2588, 2602 Slope alarm > 5% of total line
3120-4265     3120-4265 ALL Slope overload  
3731-3756     3731-3756 2931-2944 Bird depth out of spec Bird C8-17
3809-3822     3809-3822 2563-2576 Bird depth out of spec Bird C7-17
3822-3848     3822-3848 2931-2944 Bird depth out of spec Bird C8-17
4071-4085     4071-4085 27-43 Bird depth out of spec Bird C1-3
4195-4200     4195-4200 563-579 Bird depth out of spec Bird C2-10
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Streamer noise Occassional burst of swell noise affecting 10% of traces 8µB RMS


 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 20:19:51utc 12-Mar-2002