ACQUISITION REPORT Sequence-0271
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A1024B271
  Preplot G01A1024
  Direction 18.0°
  SOL Date 07:15:58utc 13-Feb-2002
  EOL Date 09:12:54utc 13-Feb-2002
 Attributes:  
   Wind Force 20.0 [knots] Dir ENE
   Swell Height 1.5 [meters] Dir ENE
   Propellor rpm 122 [avg]  
   Propellor pitch 95 [avg]  
       
  SOL EOL  
   Waterdepth 16.0 16.0 [meters]
   Bottomspeed  4.5 4.3 [knots]
   Featherangle sb +4.8 0.0 [deg]
   Cable noise 11.3 10.2 [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)   1659 - 1660  
   SOL Dummy Record(s) 1661 - 1690 1661 - 1690 07:11:55 - 07:15:50
   FSP Start of Line 1691 1691 07:15:58
   MSP      
   LSP End of Line 2480 2480 09:12:54
   EOL Dummy Record(s)      
   EOL Noise Record(s)   3001 - 3002  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1691 - 1778 1691 - 1778 07:15:58-07:27:49 Reshoot 0 Scratched Scratched dt coverage NTBP
    1779 - 2480 1779 - 2480 07:27:57-09:12:54 Reshoot 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 1014mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. STB guns firing on ODD SP. Turn noise present on niose records. Strong ground roll noise present.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1659 - 2088 1659 - 2088 2 1091  
  2089 - 3002 2089 - 3002 1 1092  
Stream 2
   Shot(s) Files Deck Reel Remark
  1659 - 2088 1659 - 2088 4 1091  
  2089 - 3002 2089 - 3002 3 1092  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 2662 Killed traces  
ALL     ALL 1476 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1657, 2307, 2782 Spiking Trace(s)  
ALL     ALL 1495 Noisy Trace(s)  
1840-1874     1840-1874 1-4 Positioning Poor reciever group positioning
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL-2479 ALL Slope overload  
ALL     ALL 2034 Crossfeed Fail crossfeed test
ALL     ALL 1-20, 22-26, 369-392, 737-759, 761-764, 1105-1114, 1116, 1126, 1473-1475, 1477-1478, 1481, 1841-1858, 1860-1868, 2209-2239, 2243, 2577-2593, 2601-2609, 2614, 2617, 2620 Slope alarm > 5% of total line
1814-1942     1814-1942 ALL Streamer noise Front end turn noise moving down the cable affecting 50-80 traces from near traces to mid traces on all streames.
1939     1939 ALL Gun timing error Gun 3-1 error (ms) : -1.7
2058     2058 ALL Gun timing error Gun 5-4 error (ms) : -1.3
2344     2344 ALL Gun timing error Gun 5-4 error (ms) : -1.1
Comment
Shot(s)     File(s) Trace(s) Type Remark
1779     1779 ALL FSGSP First good shotpoint
2455     2455 ALL Streamer noise Start turning to STB


 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 17:09:48utc 19-Feb-2002