ACQUISITION REPORT Sequence-0191
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A2864C191
  Preplot G01A2864
  Direction 198.0°
  SOL Date 06:30:17utc 14-Jan-2002
  EOL Date 08:15:05utc 14-Jan-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir SSE
   Swell Height 2.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 45.0 51.0 [meters]
   Bottomspeed  4.1 4.4 [knots]
   Featherangle 0.0 sb +0.8 [deg]
   Cable noise 8.2 24.7 [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)   3536 - 3535  
   SOL Dummy Record(s) 3534 - 3525 3534 - 3525 06:28:48 - 06:30:08
   FSP Start of Line 3524 3524 06:30:17
   MSP      
   LSP End of Line 2795 2795 08:15:05
   EOL Dummy Record(s) 2794 - 2759 2794 - 2759 08:15:14 - 08:20:45
   EOL Noise Record(s)   2759 - 2758  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3524 - 3515 3524 - 3515 06:30:17-06:31:38 Reshoot 16 Valid Overlap sp's
    3514 - 2795 3514 - 2795 06:31:46-08:15:05 Reshoot 16 Valid Line shot in opposite direction d/t snapper platform
 Remarks:      
   Navigation Streamer depth at 7.0m. LGSP of line 2795, vsl turning offline for Snapper platform.    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1016mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. Swell noise seen on all cables approx 10-20%    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3536 - 3107 3536 - 3107 1 785  
  3106 - 2997 3106 - 2997 2 786  
  2996 - 2759 2996 - 2759 1 787  
Stream 2
   Shot(s) Files Deck Reel Remark
  3536 - 3107 3536 - 3107 3 785  
  3106 - 2997 3106 - 2997 4 786  
  2996 - 2759 2996 - 2759 3 787  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1255 Killed traces  
ALL     ALL 1853 Killed traces  
ALL     ALL 1159 Noisy Channel  
ALL     ALL 2641 Spiking Channel  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2034 Fails Crossfeed  
ALL     ALL 1-9, 12, 369-374, 376-377, 737-742, 744-745, 747-748, 1105-1106, 1109, 1112-1113, 2209-2220, 2223-2224, 2577, 2585-2588 Slope alarm > 5% of total line
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Swell noise visible approx 10-20%
2859     2859 ALL Moving Offline Vessel moving offline to port to avoid Snapper platform
2795     2795 NONE LGSP LGSP of line d/t cable balance/noise d/t vsl turning offline.


 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 08:59:45utc 14-Jan-2002