ACQUISITION REPORT Sequence-0262
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A1232J262
  Preplot G01A1232
  Direction 18.0°
  SOL Date 01:34:24utc 08-Feb-2002
  EOL Date 04:47:43utc 08-Feb-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir ENE
   Swell Height 2.0 [meters] Dir ENE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 33.0 15.4 [meters]
   Bottomspeed  4.78 3.3 [knots]
   Featherangle sb +8.1 port -3.3 [deg]
   Cable noise 6.21 17.4 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Port Volume 3542 3542  
   Stbd Volume 3542 3488  

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)   997 - 998  
   SOL Dummy Record(s) 999 - 1028 999 - 1028 01:30:38 - 01:34:17
   FSP Start of Line 1029 1029 01:34:24
   MSP      
   LSP End of Line 2525 2525 04:47:43
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2526 - 2527  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1029 - 2525 1029 - 2525 01:34:24-04:47:43 Infill 14 Valid Str#8 NTBP dt earth leakage
 Remarks:      
   Navigation Streamer at 7.0m. Streamer 8 affected by low level Earth Leakage.    
   Recording QC Streamer #8 NTBP dt earth leakage. Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1004mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. Str 6 status line used for second spare    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  997 - 1426 997 - 1426 2 1064  
  1427 - 1856 1427 - 1856 1 1065  
  1857 - 2286 1857 - 2286 1 1066  
  2287 - 2527 2287 - 2527 2 1067  
Stream 2
   Shot(s) Files Deck Reel Remark
  997 - 1426 997 - 1426 4 1064  
  1427 - 1856 1427 - 1856 3 1065  
  1857 - 2286 1857 - 2286 4 1066  
  2287 - 2527 2287 - 2527 3 1067  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 1855, 2641, 2662 Killed traces  
ALL     ALL 2307, 2782 Spiking Trace(s)  
ALL     ALL 1495 Noisy Trace(s)  
ALL     ALL 2577-2944 Streamer Earth Leakage  
1265     1265 ALL Gun not fired Gun 2-8. Source volume : 3488 cu.in.
1267     1267 ALL Gun not fired Gun 2-8. Source volume : 3488 cu.in.
1269     1269 ALL Gun not fired Gun 2-8. Source volume : 3488 cu.in.
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2304 Crossfeed Crossfeed test failed
ALL     ALL 1-20, 22-23, 369-390, 737-756, 758, 763-764, 1105-1113, 1126, 1473-1475, 1477-1478, 1481-1483, 1485, 2209-2227, 2229-2232, 2239, 2577-2593, 2601-2602, 2604-2606 Slope alarm > 5% of total line
1042     1042 ALL Gun timing error Gun 5-4 error (ms) : -1.1
1075     1075 ALL Gun timing error Gun 2-8 error (ms) : 1.2
1077     1077 ALL Gun timing error Gun 2-8 error (ms) : 1.1
1111     1111 ALL Gun timing error Gun 2-8 error (ms) : -1.2
1113     1113 ALL Gun timing error Gun 2-8 error (ms) : -1.1
1143     1143 ALL Gun timing error Gun 2-8 error (ms) : -1.1
1149     1149 ALL Gun timing error Gun 2-8 error (ms) : -2.0
1151     1151 ALL Gun timing error Gun 2-8 error (ms) : -1.9
1155     1155 ALL Gun timing error Gun 2-8 error (ms) : 1.7
1169     1169 ALL Gun timing error Gun 3-1 error (ms) : -1.6
1261     1261 ALL Gun timing error Gun 2-8 error (ms) : -1.6
1263     1263 ALL Gun timing error Gun 2-8 error (ms) : 1.7
1269     1269 ALL Gun timing error Gun 3-1 error (ms) : 1.6
2214     2214 ALL Gun timing error Gun 5-4 error (ms) : -1.3
2354     2354 ALL Gun timing error Gun 5-4 error (ms) : -1.2
2438     2438 ALL Streamer noise Start turning to STB d/t shallow water
2475-2525     2475-2525 ALL Streamer noise Low frequency turn noise dt turning to STB affecting near traces
Comment
Shot(s)     File(s) Trace(s) Type Remark
1270-2526     1270- ALL Gun disabled Gun 2-8. Source volume at shot 1270 : 3488 cu.in.
1347     1347 2577-2944 Streamer Earth Leakage Low level earth leakage no longer apparent
1439-1518     1439-1518 2723-2787 Monowing wash Low frequency, high amplitude noise due to monowing wash


 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 08:10:46utc 08-Feb-2002