ACQUISITION REPORT Sequence-0002
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A2528A002
  Preplot G01A2528
  Direction 198.0°
  SOL Date 08:39:54utc 21-Oct-2001
  EOL Date 10:59:52utc 21-Oct-2001
 Attributes:  
   Wind Force 8.0 [knots] Dir ENE
   Swell Height 1.0 [meters] Dir ENE
   Propellor rpm 122 [avg]  
   Propellor pitch 92 [avg]  
       
  SOL EOL  
   Waterdepth 45.0 48.0 [meters]
   Bottomspeed  4.47 4.1 [knots]
   Featherangle port -3.8 port -2.9 [deg]
   Cable noise 5.67 4.0 [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 2.0 0001 0001-0001 0001 0001 - 0001 0.00
2 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0036 0001-0036 0036 0001 - 0036 0.00
3 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0036 0001-0036 0036 0001 - 0036 0.00
4 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0001 0001-0001 0001 0001 - 0001 0.00
5 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0001-0368 0368 0001 - 0368 5.60
6 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0369-0736 0368 0369 - 0736 5.60
7 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0737-1104 0368 0737 - 1104 5.60
8 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1105-1472 0368 1105 - 1472 5.60
9 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1473-1840 0368 1473 - 1840 5.60
10 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1841-2208 0368 1841 - 2208 5.60
11 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 2209-2576 0368 2209 - 2576 5.60
12 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)   3682 - 3681  
   SOL Dummy Record(s) 3680 - 3651 3680 - 3651 08:35:38 - 08:39:45
   FSP Start of Line 3650 3650 08:39:54
   MSP      
   LSP End of Line 2630 2630 10:59:52
   EOL Dummy Record(s)      
   EOL Noise Record(s)      
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3650 - 3161 3650 - 3161 08:39:54-09:48:03 Prime 0 Scratched Compressor Joy 2 blown
    3160 - 2670 3160 - 2670 09:48:11-10:54:13 Prime 16 Valid LGSP SP 2670
    2669 - 2630 2669 - 2630 10:54:21-10:59:52 Prime 0 Scratched Line aborted due to manifold pressure below spec
 Remarks:      
   Navigation Streamer depth 7.0m, STB Guns firing on ODD SP.    
   Recording QC Filter delay 5.6ms. Frontsheet Set 1. Bird 8-1 constantly deep, 8.1-8.4m. Gundepth calibrated at atmospheric preassure 1004mB, preassure now 1025mb. LGSP 2670, Line aborted dt manifold pressure below spec    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3682 - 3253 3682 - 3253 2 5  
  3252 - 2823 3252 - 2823 1 6  
  2822 - 2630 2822 - 2630 1 7  
Stream 2
   Shot(s) Files Deck Reel Remark
  3682 - 3253 3682 - 3253 3 5  
  3252 - 2823 3252 - 2823 4 6  
  2822 - 2630 2822 - 2630 3 7  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1191, 2764, 2806 Weak Trace(s) Trace signal less than -3dB of nominal value
ALL     ALL 304, 1495, 2775 Noisy Trace(s)  
ALL     ALL 1948 Spiking Trace(s)  
3650-3161     3650-3161 ALL Air preassure Low air preassure
2669-2630     2669-2630 ALL Air preassure Low air preassure
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-7, 9, 12, 369-374, 376-377, 737-745, 747-748, 1105-1113, 2210 Slope alarm > 5% of total line
3511     3511 ALL Manifold Pressure Compressor hose Joy 2 Blown
3510-3507     3510-3507 ALL Manifold pressure low All arrays below 1900 psi
2664-2653     2664-2653 ALL Manifold pressure low Subarray 4 below 1900 psi
2664-2653     2664-2653 ALL Manifold pressure low Subarray 5 below 1900 psi
2663-2652     2663-2652 ALL Manifold pressure low Subarray 1 below 1900 psi
2663-2652     2663-2652 ALL Manifold pressure low Subarray 3 below 1900 psi
2662-2653     2662-2653 ALL Manifold pressure low Subarray 6 below 1900 psi
2661-2654     2661-2654 ALL Manifold pressure low Subarray 2 below 1900 psi
2646-2631     2646-2631 ALL Manifold pressure low Subarray 5 below 1900 psi
2644-2633     2644-2633 ALL Manifold pressure low Subarray 4 below 1900 psi
2644-2633     2644-2633 ALL Manifold pressure low Subarray 6 below 1900 psi
2643-2632     2643-2632 ALL Manifold pressure low Subarray 1 below 1900 psi
2643-2632     2643-2632 ALL Manifold pressure low Subarray 2 below 1900 psi
2643-2632     2643-2632 ALL Manifold pressure low Subarray 3 below 1900 psi
Comment
Shot(s)     File(s) Trace(s) Type Remark
3509-3370     3509-3370 ALL Gun disabled All guns disabled. Source volume at shot 3509 : 0 cu.in.
3365     3365 ALL Soft Start Begin soft Start after compressor hose blown
3160     3160 ALL Array at Full strength First Good Shotpoint.
2670     2670 NONE LGSP LGSP SP 2670
2655-2652     2655-2652 ALL Gun disabled Gun 6-8. Source volume at shot 2655 : 0 cu.in.


 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 19:44:26utc 22-Oct-2001