ACQUISITION REPORT Sequence-0185
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A1920D185
  Preplot G01A1920
  Direction 198.0°
  SOL Date 01:26:10utc 07-Jan-2002
  EOL Date 02:58:13utc 07-Jan-2002
 Attributes:  
   Wind Force 15.0 [knots] Dir WSW
   Swell Height 2.0 [meters] Dir WSW
   Propellor rpm 122 [avg]  
   Propellor pitch 99 [avg]  
       
  SOL EOL  
   Waterdepth 39.0 43.0 [meters]
   Bottomspeed  3.5 3.6 [knots]
   Featherangle port -5.9 0.0 [deg]
   Cable noise 7.5 6.1 [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)   2101 - 2100  
   SOL Dummy Record(s) 2099 - 2090 2099 - 2090 01:24:27 - 01:26:00
   FSP Start of Line 2089 2089 01:26:10
   MSP      
   LSP End of Line 1536 1536 02:58:13
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1535 - 1535  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2089 - 2080 2089 - 2080 01:26:10-01:27:43 Reshoot 16 Valid Overlap SP's
    2079 - 1546 2079 - 1546 01:27:53-02:56:32 Reshoot 16 Valid Reshoot Seq's 169,173,177
    1545 - 1536 1545 - 1536 02:56:42-02:58:13 Reshoot 16 Valid Overlap SP's
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1000mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded. All gun DI's slightly erratic d/t swell. Swell noise seen on all cables approx 7-10%. Tailbouy jerk seen all cables.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2101 - 1672 2101 - 1672 1 763  
  1671 - 1535 1671 - 1535 2 764  
Stream 2
   Shot(s) Files Deck Reel Remark
  2101 - 1672 2101 - 1672 3 763  
  1671 - 1535 1671 - 1535 4 764  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1255 Killed traces  
ALL     ALL 1853 Killed traces  
ALL     ALL 1657, 2307, 2731 Spiking Channels Occ Spiking
ALL     ALL 1159 Noisy Channel  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2034 Fails Crossfeed  
ALL     ALL 1-12, 16, 369-374, 376-379, 737-749, 751-752, 764, 1105-1113, 1126, 1130, 1473, 1481, 2209-2220, 2222-2226, 2229-2232, 2577, 2585-2588, 2591, 2602 Slope alarm > 5% of total line
1749     1749 ALL Gun Timing Error Gun 3-5 -1.1ms
1707     1707 ALL Gun Timing Error Gun 3-5 -1.2ms
1567     1567 ALL Gun Timing Error Gun 3-5 -1.2ms
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 03:17:52utc 07-Jan-2002