ACQUISITION REPORT Sequence-0285
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4208A285
  Preplot G01A4208
  Direction 0.0°
  SOL Date 16:01:44utc 16-Feb-2002
  EOL Date 22:16:17utc 16-Feb-2002
 Attributes:  
   Wind Force 12.0 [knots] Dir SSW
   Swell Height 1.0 [meters] Dir E
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 4.4 74.0 [meters]
   Bottomspeed  4.7 4.1 [knots]
   Featherangle sb +3.9 port -7.1 [deg]
   Cable noise 4.5 6.5 [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)   4214 - 4213  
   SOL Dummy Record(s) 4212 - 4183 4212 - 4183 15:57:39 - 16:01:36
   FSP Start of Line 4182 4182 16:01:44
   MSP      
   LSP End of Line 1495 1495 22:16:17
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1494 - 1490  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    4182 - 1495 4182 - 1495 16:01:44-22:16:17 Unknown 0 Valid  
 Remarks:      
   Navigation      
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1017mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  4214 - 3785 4214 - 3785 1 1135  
  3784 - 3355 3784 - 3355 2 1136  
  3354 - 2925 3354 - 2925 2 1137  
  2924 - 2495 2924 - 2495 1 1138  
  2494 - 2065 2494 - 2065 2 1139  
  2064 - 1635 2064 - 1635 2 1140  
  1634 - 1490 1634 - 1490 1 1141  
Stream 2
   Shot(s) Files Deck Reel Remark
  4214 - 3785 4214 - 3785 3 1135  
  3784 - 3355 3784 - 3355 4 1136  
  3354 - 2925 3354 - 2925 3 1137  
  2924 - 2495 2924 - 2495 4 1138  
  2494 - 2065 2494 - 2065 4 1139  
  2064 - 1635 2064 - 1635 3 1140  
  1634 - 1490 1634 - 1490 3 1141  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1476, 1633 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 109, 1657, 2641 Spiking Trace(s)  
ALL     ALL 1495 Noisy Trace(s)  
3936-3930     3936-3930 1105-1472 Parity errors Command and Seismic Data Parity errors
3927     3927 1105-1472 Parity errors Command and Seismic Data Parity errors
3925-3924     3925-3924 1105-1472 Parity errors Command and Seismic Data Parity errors
3574     3574 2139, 2155, 2171, 2187, 2203 Seismic data parity errors Seismic Data Parity errors affecting Line 11 Str 6, 5 Ch's Only
3171-3170     3171-3170 1848, 1864, 1880, 1896, 1912, 1928, 1944, 1960, 1976, 1992, 2008, 2024, 2040, 2056, 2072, 2088, 2104, 2120, 2136, 2152, 2168, 2184, 2200 Seismic data parity errors Seismic Data Parity errors affecting Line 8 Str 6
2823-2817     2823-2817 395-411 Bird depth out of spec Bird C2-3
2530-2509     2530-2509 51-67 Bird depth out of spec Bird C1-4
2523-2518     2523-2518 419-435 Bird depth out of spec Bird C2-4
2522-2518     2522-2518 27-43 Bird depth out of spec Bird C1-3
2518-2512     2518-2512 75-91 Bird depth out of spec Bird C1-5
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2034 Crossfeed Occasionally fails crossfeed
ALL     ALL 2209-2213 Bird depth out of spec Bird C7-1 occasionaly deep, approx 7.9 - 8.3m
ALL     ALL 1-17, 20, 22, 369-383, 390, 405, 737-761, 763-764, 768-770, 1105-1144, 1147-1148, 1473-1475, 1477-1491, 1493-1496, 1499, 1508, 1510, 1512-1514, 1516, 1841-1870, 1873, 1875, 1880, 2209-2227, 2229-2232, 2235-2237, 2239, 2243, 2577, 2584-2589, 2591, 2593, 2601-2606, 2629 Slope alarm > 5% of total line
3700     3700 ALL Gun timing error Gun 5-4 error (ms) : -1.2
3350-3280     3350-3280 ALL Streamer noise Bend noise on front ends due to Heading Change
3345-3300     3345-3300 1105-1211 Streamer noise Moderate Amplitude noise on front of cable dt Heading Change
3342-3289     3342-3289 737-823 Streamer noise Moderate Amplitude noise on front of cable dt Heading Change
3340-3290     3340-3290 1-100 Streamer noise Moderate Amplitude noise on front of cable dt Heading Change
3337-3293     3337-3293 369-450 Streamer noise Moderate Amplitude noise on front of cable dt Heading Change
3178     3178 ALL Gun timing error Gun 5-4 error (ms) : -1.1
3084     3084 ALL Gun timing error Gun 5-4 error (ms) : -1.2
3018-2991     3018-2991 2081-2111 Streamer noise Object strike, moving down the streamer
2853     2853 ALL Gun timing error Gun 3-1 error (ms) : -1.8
2823-2814     2823-2814 27-43 Bird depth out of spec Bird C1-3
2823-2812     2823-2812 51-67 Bird depth out of spec Bird C1-4
2814-2805     2814-2805 419-435 Bird depth out of spec Bird C2-4
2810-2801     2810-2801 443-459 Bird depth out of spec Bird C2-5
2740     2740 ALL Gun timing error Gun 5-4 error (ms) : -1.1
2709-2696     2709-2696 2209-2213 Bird depth out of spec Bird C7-1
2626     2626 ALL Gun timing error Gun 5-4 error (ms) : -1.2
2343-2333     2343-2333 75-91 Bird depth out of spec Bird C1-5
2194     2194 ALL Gun timing error Gun 5-4 error (ms) : -1.2
2192     2192 ALL Gun timing error Gun 5-4 error (ms) : -1.1
1959-1941     1959-1941 2651-2667 Bird depth out of spec Bird C8-5
1608-1589     1608-1589 2307-2323 Bird depth out of spec Bird C7-6
1602-1581     1602-1581 2331-2347 Bird depth out of spec Bird C7-7
Comment
Shot(s)     File(s) Trace(s) Type Remark
3620     3620 ALL Line Information Start to move to Port to avoid Rig.
3350     3350 ALL Line Information Steady course heading maintained after rig pass
3270     3270 ALL Line Information Start to move Stbd to Original line DC


 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 22:51:53utc 16-Feb-2002