ACQUISITION REPORT Sequence-0391
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3968C391
  Preplot G01A3968
  Direction 198.0°
  SOL Date 20:54:08utc 30-Apr-2002
  EOL Date 03:06:23utc 01-May-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir SW
   Swell Height 1.0 [meters] Dir E
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 48.0 67.7 [meters]
   Bottomspeed  4.3 5.0 [knots]
   Featherangle port -4.1 sb +11.8 [deg]
   Cable noise 4.8 5.28 [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)   4204 - 4203  
   SOL Dummy Record(s) 4202 - 4173 4202 - 4173 20:49:55 - 20:53:59
   FSP Start of Line 4172 4172 20:54:08
   MSP 2839 2839 23:59:57
   LSP End of Line 1399 1399 03:06:23
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1398 - 1397  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4172 - 3801 4172 - 3801 20:54:08-21:46:20 Prime 16 Valid Reference SEQ 374
    3800 - 2400 3800 - 2400 21:46:28-01:00:39 Infill 16 Valid  
    2399 - 1951 2399 - 1951 01:00:47-01:58:07 Infill 16 Scratched NTBP - Duplicate coverage
    1950 - 1900 1950 - 1900 01:58:15-02:04:20 Infill 16 Valid  
    1899 - 1399 1899 - 1399 02:04:28-03:06:23 Prime 16 Valid Reference SEQ 374
 Remarks:      
   Navigation Streamer depth 7m    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1025mB. Side swipes present at recording.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4204 - 3775 4204 - 3775 1 1669  
  3774 - 3345 3774 - 3345 2 1670  
  3344 - 2915 3344 - 2915 1 1671  
  2914 - 2485 2914 - 2485 2 1672  
  2484 - 2055 2484 - 2055 1 1673  
  2054 - 1625 2054 - 1625 2 1674  
  1624 - 1397 1624 - 1397 1 1675  
Stream 2
   Shot(s) Files Deck Reel Remark
  4204 - 3775 4204 - 3775 3 1669  
  3774 - 3345 3774 - 3345 4 1670  
  3344 - 2915 3344 - 2915 3 1671  
  2914 - 2485 2914 - 2485 4 1672  
  2484 - 2055 2484 - 2055 3 1673  
  2054 - 1625 2054 - 1625 4 1674  
  1624 - 1397 1624 - 1397 3 1675  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 744 Killed traces  
ALL     ALL 1476, 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 1533, 2265, 2764 Spiking Trace(s)  
ALL     ALL 1857, 2827, 2871 Noisy Trace(s)  
2399-1951     2399-1951 ALL Duplicate Coverage  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-14, 16-17, 20, 22, 369-385, 390, 1105-1113, 1115-1116, 1121-1126, 1129-1133, 1135, 1481, 1484, 1489, 1841-1856, 1860, 2209-2226, 2229, 2577-2578, 2584-2588, 2591, 2602 Slope alarm > 5% of total line
3739-3719     3739-3719 2675-2691 Bird depth out of spec Bird C8-6
3528     3528 ALL Streamer noise Noise affecting all streamers for this SP only
3004-2981     3004-2981 99-115 Bird depth out of spec Bird C1-6
2981-2954     2981-2954 147-163 Bird depth out of spec Bird C1-8
2953-2756     2953-2756 587-603 Bird depth out of spec Bird C2-11
2553-2543     2553-2543 2651-2667 Bird depth out of spec Bird C8-5
2550-2531     2550-2531 2765-2691 Bird depth out of spec Bird C8-6
2363-2265     2363-2265 ALL Streamer noise Low frequency noise dt currents approx 40-60uB
1418-1399     1418-1399 587-603 Bird depth out of spec Bird C2-11
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 07:28:49utc 01-May-2002