ACQUISITION REPORT Sequence-0256
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A1216A256
  Preplot G01A1216
  Direction 18.0°
  SOL Date 06:20:06utc 06-Feb-2002
  EOL Date 10:53:28utc 06-Feb-2002
 Attributes:  
   Wind Force 18.0 [knots] Dir ENE
   Swell Height 2.0 [meters] Dir E
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 33.0 16.0 [meters]
   Bottomspeed  2.8 3.9 [knots]
   Featherangle port -9.9 port -3.7 [deg]
   Cable noise 6.8 8.8 [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)   1015 - 1016  
   SOL Dummy Record(s) 1017 - 1026 1017 - 1026 06:18:00 - 06:19:54
   FSP Start of Line 1027 1027 06:20:06
   MSP      
   LSP End of Line 2470 2470 10:53:28
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2509 - 2510  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1027 - 2470 1027 - 2470 06:20:06-10:53:28 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m. LSP 2470, no longer gaining coverage.    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1019mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1015 - 1444 1015 - 1444 1 1037  
  1445 - 1874 1445 - 1874 2 1038  
  1875 - 2304 1875 - 2304 1 1039  
  2305 - 2510 2305 - 2510 2 1040  
Stream 2
   Shot(s) Files Deck Reel Remark
  1015 - 1444 1015 - 1444 3 1037  
  1445 - 1874 1445 - 1874 4 1038  
  1875 - 2304 1875 - 2304 3 1039  
  2305 - 2510 2305 - 2510 4 1040  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1495, 2307 Noisy Channels  
1027-1169     1027-1169 2662 Spiking Trace  
1170-2470     1170-2470 2662 Killed trace  
1170-1402     1170-1402 2641 Spiking Trace  
1403-2470     1403-2470 2641 Killed trace  
2096     2096 ALL Gun timing error Gun 5-2 error (ms) : 2.8
2146     2146 ALL Gun timing error Gun 5-2 error (ms) : 2.8
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2034 Fails Crossfeed  
ALL     ALL 1841-2208 Parity errors Low level parity errors observed cable 6
ALL     ALL 1-17, 20, 22, 369-383, 385, 389-390, 737-755, 758, 763-764, 1105-1113, 1116, 1126, 1473-1483, 1485, 1487, 1841-1862, 1864-1867, 2209-2227, 2229-2232, 2236, 2239, 2577, 2585-2589, 2591-2592, 2601-2602 Slope alarm > 5% of total line
1326     1326 ALL Gun Timing Error Gun 5-4 (-1.4 ms)
1972     1972 ALL Gun timing error Gun 5-2 error (ms) : 1.6
2090     2090 ALL Gun timing error Gun 5-4 error (ms) : -1.3
2096     2096 ALL Gun timing error Gun 5-4 error (ms) : -1.4
2098     2098 ALL Gun timing error Gun 5-2 error (ms) : 2.0
2144     2144 ALL Gun timing error Gun 5-2 error (ms) : 2.0
2148     2148 ALL Gun timing error Gun 5-2 error (ms) : 1.9
2166     2166 ALL Gun timing error Gun 5-4 error (ms) : -1.2
2186     2186 ALL Gun timing error Gun 5-4 error (ms) : -1.3
2210     2210 ALL Gun timing error Gun 5-4 error (ms) : -1.3
2218     2218 ALL Gun timing error Gun 5-4 error (ms) : -1.3
2252     2252 ALL Gun timing error Gun 5-4 error (ms) : -1.3
2334     2334 ALL Gun timing error Gun 5-4 error (ms) : -1.6
2386     2386 ALL Gun timing error Gun 5-4 error (ms) : -1.1
2400     2400 ALL VSl Turning Vsl turning to stbd d/t shallows
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Occ swell noise seen approx 10%
2470     2470 NONE LSP LSP of line, no longer gaining coverage


 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 11:28:40utc 06-Feb-2002