ACQUISITION REPORT Sequence-0276
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A1760A276
  Preplot G01A1760
  Direction 18.0°
  SOL Date 10:46:31utc 14-Feb-2002
  EOL Date 16:06:59utc 14-Feb-2002
 Attributes:  
   Wind Force 20.0 [knots] Dir ENE
   Swell Height 1.5 [meters] Dir SE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 42.0 33.1 [meters]
   Bottomspeed  3.9 3.9 [knots]
   Featherangle port -1.3 port -1.8 [deg]
   Cable noise 5.7 4.5 [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)   1062 - 1063  
   SOL Dummy Record(s) 1064 - 1093 1064 - 1093 10:41:49 - 10:46:22
   FSP Start of Line 1094 1094 10:46:31
   MSP      
   LSP End of Line 3072 3072 16:06:59
   EOL Dummy Record(s)      
   EOL Noise Record(s)   3073 - 3074  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1094 - 3072 1094 - 3072 10:46:31-16:06:59 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1016mB. SSE functions on TRISOR disabled, GUNPOS block NOT recorded.STB guns firing on ODD SP. Strong ground roll noise present. Sporadic low level paritys on str #5    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1062 - 1491 1062 - 1491 2 1107  
  1492 - 1921 1492 - 1921 1 1108  
  1922 - 2351 1922 - 2351 1 1109  
  2352 - 2781 2352 - 2781 2 1110  
  2782 - 3074 2782 - 3074 1 1111  
Stream 2
   Shot(s) Files Deck Reel Remark
  1062 - 1491 1062 - 1491 4 1107  
  1492 - 1921 1492 - 1921 3 1108  
  1922 - 2351 1922 - 2351 4 1109  
  2352 - 2781 2352 - 2781 4 1110  
  2782 - 3074 2782 - 3074 4 1111  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 2662 Killed traces  
ALL     ALL 2307, 2782, 1657, 2641, 1991 Spiking Trace(s)  
ALL     ALL 1476 Noisy Trace(s)  
ALL     ALL 1476 Weak Trace(s) Trace signal less than -6dB of nominal value
2116-2123     2116-2123 2651-2667 Bird depth out of spec Bird C8-5
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2034 Crossfeed Fails crossfeed test
ALL     ALL 1-12, 16, 369-374, 376-377, 737-742, 744-749, 751, 1105-1113, 1126, 1473, 1841-1850, 1852-1853, 1855-1856, 2209-2220, 2222-2226, 2229-2231, 2577, 2585, 2587-2588 Slope alarm > 5% of total line
1121     1121 ALL Gun timing error Gun 3-1 error (ms) : -1.6
1290     1290 1488, 1504, 1520, 1536, 1552, 1568, 1584, 1600, 1616, 1632, 1648, 1664, 1680, 1698, 1712, 1728, 1744, 1760, 1776, 1792, 1808, 1824, 1840 Parity errors Low level parity errors affecting Line 16 Str 5, 47 parities
1296     1296 1488, 1504, 1520, 1536, 1552, 1568, 1584, 1600, 1616, 1632, 1648, 1664, 1680, 1698, 1712, 1728, 1744, 1760, 1776, 1792, 1808, 1824, 1840 Parity errors Low level parity errors affecting Line 16 Str 5, 82 parities
1687     1687 1488, 1504, 1520, 1536, 1552, 1568, 1584, 1600, 1616, 1632, 1648, 1664, 1680, 1698, 1712, 1728, 1744, 1760, 1776, 1792, 1808, 1824, 1840 Parity errors Low level parity errors affecting Line 16 Str 5, 42 parities
1816     1816 ALL External header lost External Header data not recorded on tape
2287-2296     2287-2296 2651-2667 Bird depth out of spec Bird C8-5
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 16:31:06utc 14-Feb-2002