ACQUISITION REPORT Sequence-0326
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3776A326
  Preplot G01A3776
  Direction 18.0°
  SOL Date 10:52:54utc 24-Mar-2002
  EOL Date 13:48:23utc 24-Mar-2002
 Attributes:  
   Wind Force 12.0 [knots] Dir ENE
   Swell Height 1.0 [meters] Dir E
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 64.0 56.0 [meters]
   Bottomspeed  3.4 3.6 [knots]
   Featherangle sb +8.9 sb +6.9 [deg]
   Cable noise 6.4 4.7 [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)   1681 - 1682  
   SOL Dummy Record(s) 1683 - 1692 1683 - 1692 10:51:05 - 10:52:43
   FSP Start of Line 1693 1693 10:52:54
   MSP      
   LSP End of Line 2735 2735 13:48:23
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4275 - 4276  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1693 - 2735 1693 - 2735 10:52:54-13:48:23 Prime 16 Valid LGSP 2735 d/t array 2 low pressure
 Remarks:      
   Navigation Streamer depth at 7.0m    
   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. STB guns firing on ODD SP.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1681 - 2110 1681 - 2110 1 1337  
  2111 - 2540 2111 - 2540 2 1338  
  2541 - 4276 2541 - 4276 1 1339  
Stream 2
   Shot(s) Files Deck Reel Remark
  1681 - 2110 1681 - 2110 3 1337  
  2111 - 2540 2111 - 2540 4 1338  
  2541 - 4276 2541 - 4276 3 1339  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1476 Weak Trace(s) Trace signal less than -6dB of nominal value
2503-2504     2503-2504 ALL Manifold pressure low Subarray 2 below 1900 psi
2559-2560     2559-2560 ALL Manifold pressure low Subarray 2 below 1900 psi
2631-2632     2631-2632 ALL Manifold pressure low Subarray 2 below 1900 psi
2639-2640     2639-2640 ALL Manifold pressure low Subarray 2 below 1900 psi
2675-2676     2675-2676 ALL Manifold pressure low Subarray 2 below 1900 psi
2709-2710     2709-2710 ALL Manifold pressure low Subarray 2 below 1900 psi
2713-2714     2713-2714 ALL Manifold pressure low Subarray 2 below 1900 psi
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-13, 16, 369-383, 405, 737-758, 760, 763-764, 1105-1106, 1108-1113, 1115-1116, 1121-1126, 1129-1135, 1138, 1147, 1473, 1483-1485, 1489, 1841-1857, 1860, 2209-2226, 2229-2230, 2577, 2584-2588, 2602 Slope alarm > 5% of total line
ALL     ALL 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
2198     2198 ALL Pressure Drop Subarray 2 pressure dropping to 1900 psi d/t air leak
Comment
Shot(s)     File(s) Trace(s) Type Remark
2228-2745     2228- ALL Gun disabled Gun 2-5. Source volume at shot 2228 : 3307 cu.in.
2735     2735 ALL   LIne ended early d/t air leak Subarray 2


 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 17:29:18utc 24-Mar-2002