ACQUISITION REPORT Sequence-0314
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4976B314
  Preplot G01A4976
  Direction 198.0°
  SOL Date 23:12:27utc 12-Mar-2002
  EOL Date 04:33:02utc 13-Mar-2002
 Attributes:  
   Wind Force 21.0 [knots] Dir W
   Swell Height 2.0 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 84.0 328.0 [meters]
   Bottomspeed  4.5 4.2 [knots]
   Featherangle sb +0.6 port -3.2 [deg]
   Cable noise 8.3 4.9 [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)   4246 - 4245  
   SOL Dummy Record(s) 4244 - 4215 4244 - 4215 23:08:25 - 23:12:19
   FSP Start of Line 4214 4214 23:12:27
   MSP 3852 3852 23:59:55
   LSP End of Line 1805 1805 04:33:02
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1804 - 1803  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4214 - 1805 4214 - 1805 23:12:27-04:33:02 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    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4246 - 3817 4246 - 3817 1 1283  
  3816 - 3387 3816 - 3387 2 1284  
  3386 - 2957 3386 - 2957 1 1285  
  2956 - 2527 2956 - 2527 1 1286  
  2526 - 2097 2526 - 2097 1 1287  
  2096 - 1804 2096 - 1804 2 1288  
Stream 2
   Shot(s) Files Deck Reel Remark
  4246 - 3817 4246 - 3817 3 1283  
  3816 - 3387 3816 - 3387 4 1284  
  3386 - 2957 3386 - 2957 3 1285  
  2956 - 2527 2956 - 2527 4 1286  
  2526 - 2097 2526 - 2097 3 1287  
  2096 - 1804 2096 - 1804 4 1288  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1476, 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 2772 Noisy Trace(s)  
ALL     ALL 1657, 2389, 2641 Spiking Trace(s)  
ALL     ALL- 2599 Killed traces  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise swell noise effect 5%, Average RMS 8uB
ALL     ALL 1-12, 369-374, 376-377, 737-738, 744, 1105, 1841-1843, 1845-1849, 2209-2220, 2223, 2577, 2585, 2587-2588 Slope alarm > 5% of total line
4198-4197     4198-4197 2209-2213 Bird depth out of spec Bird C7-1, occasionally deep 8.1m - 8.4m
3602-3591     3602-3591 2307-2323 Bird depth out of spec Bird C7-6
3560-3544     3560-3544 2699-2715 Bird depth out of spec Bird C8-7
3505-3488     3505-3488 2675-2691 Bird depth out of spec Bird C8-6
3440-3430     3440-3430 2651-2667 Bird depth out of spec Bird C8-5
3084     3084 ALL Gun timing error Gun 5-4 error (ms) : -1.1
2951-2470     2951-2470 ALL Ship Noise From slightly ahead. Level 10-15 uBar. Moveout 100 ms/km, affecting firts 50 traces
Comment
Shot(s)     File(s) Trace(s) Type Remark


 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 04:52:42utc 13-Mar-2002