ACQUISITION REPORT Sequence-0491
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170B
  Survey Type 6 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3968N491
  Preplot G01A3968
  Direction 18.0°
  SOL Date 14:42:51utc 01-Jul-2002
  EOL Date 15:23:36utc 01-Jul-2002
 Attributes:  
   Wind Force 18.0 [knots] Dir WSW
   Swell Height 2.0 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 84 [avg]  
       
  SOL EOL  
   Waterdepth 66.0 62.0 [meters]
   Bottomspeed  4.9 5.2 [knots]
   Featherangle port -10.2 0.0 [deg]
   Cable noise 7.5 36.6 [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 -520.0 250.0 -7.0 4600 Nessie-3 12.5 368 0001-0368
2 STBD -520.0 150.0 -7.0 4600 Nessie-3 12.5 368 0369-0736
3 STBD -520.0 50.0 -7.0 4600 Nessie-3 12.5 368 0737-1104
4 PORT -520.0 -50.0 -7.0 4600 Nessie-3 12.5 368 1105-1472
5 PORT -520.0 -150.0 -7.0 4600 Nessie-3 12.5 368 1473-1840
6 PORT -520.0 -250.0 -7.0 4600 Nessie-3 12.5 368 1841-2208

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

Production
  Shotpoint File Time [utc]
   SOL Noise Record(s)   1487 - 1488  
   SOL Dummy Record(s) -1 - 1518 9999 - 1518 06:05:03 - 14:42:44
   FSP Start of Line 1519 1519 14:42:51
   MSP      
   LSP End of Line 1840 1840 15:23:36
   EOL Dummy Record(s)      
   EOL Noise Record(s)   4293 - 4294  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1519 - 1840 1519 - 1840 14:42:51-15:23:36 Infill 12 Valid  
 Remarks:      
   Navigation Streamer depth 7.0mtr. Six streamer line.    
   Recording QC Frontsheet Set 5. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1016mB. Using Six streamer. Bird C6-11 No Comms. Turn noise at EOL and EOL noise records dt turning off for rig.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1487 - 4294 1487 - 4294 2 1975  
Stream 2
   Shot(s) Files Deck Reel Remark
  1487 - 4294 1487 - 4294 4 1975  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2067, 2134 Noisy Trace(s)  
1571     1571 ALL Gun timing error Gun 3-2 error (ms) : -2.2
1613-1618     1613-1618 51-67 Bird depth out of spec Bird C1-4,max depth 9.6m
1810-1840     1810-1840 369-450 Streamer noise Low frequency noise dt turn
1815-1840     1815-1840 1-84 Streamer noise Low frequency noise dt turn
1815-1840     1815-1840 737-803 Streamer noise Low frequency noise dt turn
1815-1840     1815-1840 1105-1173 Streamer noise Low frequency noise dt turn
1815-1840     1815-1840 1473-1515 Streamer noise Low frequency noise dt turn
1820-1840     1820-1840 1841-1879 Streamer noise Low frequency noise dt turn
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1127, 379, 1895 Noisy Trace(s)  
ALL     ALL 1-13, 22, 369-385, 387, 389-390, 392, 395-396, 1105, 1110, 1112-1117, 1121, 1473-1487, 1492-1493, 1841-1857 Slope alarm > 5% of total line
1544     1544 ALL Gun timing error Gun 5-4 error (ms) : -1.1
1569     1569 ALL Gun timing error Gun 3-2 error (ms) : -1.9
1573     1573 ALL Gun timing error Gun 3-2 error (ms) : -1.9
1583-1595     1583-1595 1763-1779 Bird depth out of spec Bird C5-14
1607-1625     1607-1625 27-43 Bird depth out of spec Bird C1-3
1638-1652     1638-1652 51-67 Bird depth out of spec Bird C1-4
1643-1653     1643-1653 27-43 Bird depth out of spec Bird C1-3
1756-1768     1756-1768 27-43 Bird depth out of spec Bird C1-3
1822-1834     1822-1834 NONE Bird depth out of spec Bird C1-16
Comment
Shot(s)     File(s) Trace(s) Type Remark
1805     1805 ALL Turning Start turning for rig


 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 02:23:22utc 02-Jul-2002