ACQUISITION REPORT Sequence-0090
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3168A090
  Preplot G01A3168
  Direction 18.0°
  SOL Date 10:33:18utc 28-Nov-2001
  EOL Date 16:14:24utc 28-Nov-2001
 Attributes:  
   Wind Force 1.0 [knots] $(wind_dir)
   Swell Height 0.5 [meters] Dir NE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 60.0 42.0 [meters]
   Bottomspeed  4.2 5.0 [knots]
   Featherangle port -4.2 sb +2.5 [deg]
   Cable noise 5.45 5.8 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]

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)   1601 - 1602  
   SOL Dummy Record(s) 1603 - 1612 1603 - 1612 10:31:51 - 10:33:09
   FSP Start of Line 1613 1613 10:33:18
   MSP      
   LSP End of Line 4120 4120 16:14:24
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4121 - 4122  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1613 - 4120 1613 - 4120 10:33:18-16:14:24 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m. Occ random bird dropout seen streamer 7.    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1016mB. Str 8 Bird 1 mask on External Header, constantly deep, 8.1m. Traces 2529-2537 NTBP due to earth leakage from SOL to sp 3537. Traces 2529-2576 NTBP sp 3538-EOL . Also d/t leakage.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1601 - 2030 1601 - 2030 1 340  
  2031 - 2460 2031 - 2460 2 341  
  2461 - 2890 2461 - 2890 1 342  
  2891 - 3320 2891 - 3320 1 343  
  3321 - 3750 3321 - 3750 1 344  
  3751 - 4122 3751 - 4122 2 345  
Stream 2
   Shot(s) Files Deck Reel Remark
  1601 - 2030 1601 - 2030 3 340  
  2031 - 2460 2031 - 2460 4 341  
  2461 - 2890 2461 - 2890 3 342  
  2891 - 3320 2891 - 3320 4 343  
  3321 - 3750 3321 - 3750 3 344  
  3751 - 4122 3751 - 4122 4 345  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2220 killed trace  
1613-3537     1613-3537 2529-2537 Spiking d/t E/L  
3538-4120     3538-4120 2529-2576 dead traces traces NTBP - bubble initialisation lost d/t E/L
4057     4057 ALL hdr lost Extnal hdr lost
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2301 Fails Crossfeed  
ALL     ALL 1191 Weak Traces Weak trace: 1191, more than -6 dB down
ALL     ALL 1-9, 12, 369-374, 376-377, 737-745, 748, 1105-1106, 1108-1113, 1130, 1473, 1484, 1489, 1499, 1841-1845, 1849-1850, 1852, 1855-1856 Slope alarm > 5% of total line
1951     1951 NONE Bird depth out of spec Bird C7-4
2102-2104     2102-2104 NONE Bird depth out of spec Bird C2-4
2533     2533 ALL Gun timing error Gun 3-3 error (ms) : -1.7
2535     2535 ALL Gun timing error Gun 3-3 error (ms) : -1.2
2537     2537 ALL Gun timing error Gun 3-3 error (ms) : -1.8
3080-3086     3080-3086 NONE Bird depth out of spec Bird C7-2
3117     3117 ALL Gun timing error Gun 3-3 error (ms) : -1.1
3120     3120 NONE Bird depth out of spec Bird C7-6
3122-3126     3122-3126 NONE Bird depth out of spec Bird C7-6
3128     3128 NONE Bird depth out of spec Bird C7-6
3131     3131 NONE Bird depth out of spec Bird C7-6
3175-3184     3175-3184 NONE Bird depth out of spec Bird C7-6
3187     3187 NONE Bird depth out of spec Bird C7-6
3445     3445 ALL Gun timing error Gun 3-3 error (ms) : -1.3
3447     3447 ALL Gun timing error Gun 3-3 error (ms) : -1.4
3449     3449 ALL Gun timing error Gun 3-3 error (ms) : -1.2
3485     3485 ALL Gun timing error Gun 3-3 error (ms) : -1.2
3816     3816 NONE Bird depth out of spec Bird C7-2
3970     3970 NONE Bird depth out of spec Bird C5-17
4075-4076     4075-4076 NONE Bird depth out of spec Bird C7-2
4076     4076 NONE Bird depth out of spec Bird C6-1
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 19:51:02utc 28-Nov-2001