ACQUISITION REPORT Sequence-0247
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A2304K247
  Preplot G01A2304
  Direction 18.0°
  SOL Date 01:37:50utc 01-Feb-2002
  EOL Date 07:05:27utc 01-Feb-2002
 Attributes:  
   Wind Force 25.0 [knots] Dir NE
   Swell Height 2.0 [meters] Dir NE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 50.0 38.0 [meters]
   Bottomspeed  3.8 4.0 [knots]
   Featherangle port -6.1 port -3.8 [deg]
   Cable noise 9.2 8.7 [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)   1551 - 1552  
   SOL Dummy Record(s) 1290 - 1562 1290 - 1562 00:54:10 - 01:37:40
   FSP Start of Line 1563 1563 01:37:50
   MSP      
   LSP End of Line 3621 3621 07:05:27
   EOL Dummy Record(s)      
   EOL Noise Record(s)   3622 - 3623  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1563 - 3621 1563 - 3621 01:37:50-07:05:27 Infill 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7m    
   Recording QC ODD sp's only between sp 2667 - 2859 inclusive NTBP d/t bad stbd source geometry, (separation rope broken between subarray 1 and 2) Bird 2-14 mask on ext header, see annotations for info. Strong bursts of swell affecting random traces. Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1015mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1551 - 1980 1551 - 1980 1 1004  
  1981 - 2410 1981 - 2410 2 1005  
  2411 - 2840 2411 - 2840 1 1006  
  2841 - 3270 2841 - 3270 2 1007  
  3271 - 3623 3271 - 3623 1 1008  
Stream 2
   Shot(s) Files Deck Reel Remark
  1551 - 1980 1551 - 1980 3 1004  
  1981 - 2410 1981 - 2410 4 1005  
  2411 - 2840 2411 - 2840 3 1006  
  2841 - 3270 2841 - 3270 4 1007  
  3271 - 3623 3271 - 3623 4 1008  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1495, 2307 Noisy Channels  
ALL     ALL 109, 519, 1767 Spiking Trace(s)  
1756-1765     1756-1765 2259-2275 Bird depth out of spec Bird C7-4 max 9.9 mtrs
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1-7, 9, 12, 369-374, 377, 737-741, 744, 1105-1106, 1109, 1112, 1841-1849, 2209-2211, 2213-2214, 2216-2219, 2223 Slope alarm > 5% of total line
1619     1619 ALL Gun timing error Gun 2-6 error (ms) : -1.1
1641     1641 ALL Gun timing error Gun 2-6 error (ms) : -1.1
1681     1681 ALL Gun timing error Gun 2-6 error (ms) : -1.1
1705-1715     1705-1715 NONE Bird depth out of spec Bird C7-4 max 8.6 mtrs
1715     1715 ALL Gun timing error Gun 2-6 error (ms) : -1.1
1741     1741 ALL Gun timing error Gun 2-6 error (ms) : -1.4
1755-1769     1755-1769 NONE Bird depth out of spec Bird C7-3 max 8.9 mtrs
1764-1775     1764-1775 NONE Bird depth out of spec Bird C8-4 max 9.0 mtrs
1766-1775     1766-1775 NONE Bird depth out of spec Bird C8-5 max 9.0 mtrs
1767     1767 ALL Gun timing error Gun 2-6 error (ms) : -1.1
1804-1812     1804-1812 NONE Bird depth out of spec Bird C1-3 max 8.7 mtrs
1826     1826 ALL Gun timing error Gun 5-4 error (ms) : -1.2
1895     1895 ALL Gun timing error Gun 2-6 error (ms) : -1.1
1899     1899 ALL Gun timing error Gun 2-6 error (ms) : -1.2
1909     1909 ALL Gun timing error Gun 2-6 error (ms) : -1.1
1925     1925 ALL Gun timing error Gun 1-2 error (ms) : -1.9
1979     1979 ALL Gun timing error Gun 2-6 error (ms) : -1.1
2174     2174 ALL Gun timing error Gun 5-4 error (ms) : -1.1
2243     2243 ALL Gun timing error Gun 2-6 error (ms) : -1.1
2263     2263 ALL Gun timing error Gun 2-6 error (ms) : -1.2
2267     2267 ALL Gun timing error Gun 2-6 error (ms) : -1.2
2352     2352 ALL Gun timing error Gun 5-4 error (ms) : -1.1
2389     2389 ALL Gun timing error Gun 2-6 error (ms) : -1.1
2427     2427 ALL Gun timing error Gun 2-6 error (ms) : -1.1
2449     2449 ALL Gun timing error Gun 2-6 error (ms) : -1.1
2495     2495 ALL Gun timing error Gun 2-6 error (ms) : -1.1
2592     2592 ALL Gun timing error Gun 5-4 error (ms) : -1.4
2609     2609 ALL Gun timing error Gun 2-6 error (ms) : -1.3
2613     2613 ALL Gun timing error Gun 2-6 error (ms) : -1.1
2667-2859     2667-2859 ALL Bad Gun Geometry Do not process ODD sp's only between sp's 2667-2859 inclusive d/t bad stbd source geometry
2960     2960 ALL Gun timing error Gun 5-4 error (ms) : -1.1
3108     3108 ALL Gun timing error Gun 5-4 error (ms) : -1.1
3127     3127 ALL Gun timing error Gun 2-6 error (ms) : -1.1
3191     3191 ALL Gun timing error Gun 2-6 error (ms) : -1.2
3204     3204 ALL Gun Timing Error Gun 5-4 (-1.1 ms)
3393     3393 ALL Gun timing error Gun 2-6 error (ms) : -1.1
3444     3444 ALL Gun timing error Gun 5-4 error (ms) : -1.3
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL ALL Swell Noise Swell noise seen on all cables approx 5-10%
ALL     ALL 1841-2208 Parity errors Low level parity errors observed on streamer 6 during line
ALL     ALL 659-675 Streamer depth Bird 2-14 occ reading shallow during line, min 5.5 mtrs average 6.0 mtrs
ALL     ALL NONE Gun Depths All gun depths occ erratic d/t swell.


 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 09:46:59utc 01-Feb-2002