ACQUISITION REPORT Sequence-0008
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A2704A008
  Preplot G01A2704
  Direction 18.0°
  SOL Date 19:40:29utc 22-Oct-2001
  EOL Date 23:55:44utc 22-Oct-2001
 Attributes:  
   Wind Force 15.0 [knots] Dir NE
   Swell Height 0.5 [meters] Dir NE
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 53.0 43.0 [meters]
   Bottomspeed  4.2 4.8 [knots]
   Featherangle sb +1.4 sb +2.8 [deg]
   Cable noise 6.2 6.7 [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 2.0 0001 0001-0001 0001 0001 - 0001 0.00
2 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0036 0001-0036 0036 0001 - 0036 0.00
3 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0036 0001-0036 0036 0001 - 0036 0.00
4 NFH SEGD 8015, Rev.2 NONE 6.0 0.25 0001 0001-0001 0001 0001 - 0001 0.00
5 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0001-0368 0368 0001 - 0368 5.60
6 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0369-0736 0368 0369 - 0736 5.60
7 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 0737-1104 0368 0737 - 1104 5.60
8 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1105-1472 0368 1105 - 1472 5.60
9 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1473-1840 0368 1473 - 1840 5.60
10 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 1841-2208 0368 1841 - 2208 5.60
11 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0368 2209-2576 0368 2209 - 2576 5.60
12 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)   1888 - 1889  
   SOL Dummy Record(s) 1890 - 1919 1890 - 1919 19:36:10 - 19:40:20
   FSP Start of Line 1920 1920 19:40:29
   MSP      
   LSP End of Line 3887 3887 23:55:44
   EOL Dummy Record(s)      
   EOL Noise Record(s)   3888 - 3889  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    1920 - 3887 1920 - 3887 19:40:29-23:55:44 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7.0m, STB Guns firing on EVEN SP.    
   Recording QC Filter delay 5.6ms. Frontsheet Set 1. Bird 8-1 constantly deep, 8.1-8.4m. Gundepth calibrated at atmospheric preassure 1004mB, preassure now 1017mb. Str 8 Bird 1 mask on External Header. Tugging noise present on all tail ends.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  1888 - 2317 1888 - 2317 1 31  
  2318 - 2747 2318 - 2747 2 32  
  2748 - 3177 2748 - 3177 1 33  
  3178 - 3607 3178 - 3607 2 34  
  3608 - 3889 3608 - 3889 1 35  
Stream 2
   Shot(s) Files Deck Reel Remark
  1888 - 2317 1888 - 2317 3 31  
  2318 - 2747 2318 - 2747 4 32  
  2748 - 3177 2748 - 3177 3 33  
  3178 - 3607 3178 - 3607 4 34  
  3608 - 3889 3608 - 3889 3 35  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 1948 Killed traces  
ALL     ALL 1191, 2764, 2806 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 304, 1127, 1495, 2775 Noisy Trace(s)  
2237-3887     2237-3887 1191, 2764, 2806 Killed traces  
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2577-2584 Bird depth out of spec Bird C8-1 Deep all line 7.5m to 8.5m
ALL     ALL 1, 3-7, 9, 12, 369-373, 377, 737-745, 747-749, 1105-1113, 1473, 1841, 2209-2211, 2217 Slope alarm > 5% of total line
3068     3068 NONE Bird depth out of spec Bird C6-16
3208     3208 ALL Gun timing error Gun 3-2 error (ms) : -1.6
3661     3661 NONE Bird depth out of spec Bird C2-14
Comment
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL NONE   NFH 1.4 using GSAP reference


 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 12:17:40utc 23-Oct-2001