ACQUISITION REPORT Sequence-0848
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170C
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename 7256PMA848
  Preplot G01A7256MA
  Direction 288.0°
  SOL Date 16:42:21utc 15-May-2002
  EOL Date 17:12:27utc 15-May-2002
 Attributes:  
   Wind Force 22.0 [knots] Dir NE
   Swell Height 1.5 [meters] Dir SW
   Propellor rpm 122 [avg]  
   Propellor pitch 98 [avg]  
       
  SOL EOL  
   Waterdepth 54.0 53.0 [meters]
   Bottomspeed  4.5 4.5 [knots]
   Featherangle sb +0.8 port -1.3 [deg]
   Cable noise 8.7 7.01 [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 8
2 PORT -345.0 -25.0 -6.0 3542.0 3 8

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)   2802 - 2803  
   SOL Dummy Record(s) 2804 - 2833 2804 - 2833 16:38:22 - 16:42:14
   FSP Start of Line 2834 2834 16:42:21
   MSP      
   LSP End of Line 3060 3060 17:12:27
   EOL Dummy Record(s)      
   EOL Noise Record(s)   3061 - 3062  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2834 - 3060 2834 - 3060 16:42:21-17:12:27 Prime 16 Valid  
 Remarks:      
   Navigation Streamer depth 7m. NAVRT External Header Block defines Job No. 9170C    
   Recording QC Frontsheet Set 4. Gundepth calibrated at atmospheric pressure 1017mB, pressure now 1022 mB. Low frequency strumming Str 6 channels 1841 - 1875. NFH 2-2 dead. Occassional burst of swell noise present on records, affected 5-10 % traces.    

Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  2802 - 3062 2802 - 3062 2 10048  
Stream 2
   Shot(s) Files Deck Reel Remark
  2802 - 3062 2802 - 3062 4 10048  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL- 377, 744, 2764 Killed traces  
ALL     ALL 1633, 2782 Weak Trace(s) Trace signal less than -6dB of nominal value
ALL     ALL 337, 349, 1553, 791 Spiking Trace(s)  
ALL     ALL 1857 Noisy Trace(s)  
2858-2899     2858-2899 2675-2691 Bird depth out of spec Bird C8-6, max depth 10.8m
2864-2880     2864-2880 2651-2667 Bird depth out of spec Bird C8-5, max depth 9.5m
2876-2890     2876-2890 2699-2715 Bird depth out of spec Bird C8-7, max depth 9.6m
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1316 Fails PS  
2852-2863     2852-2863 2651-2667 Bird depth out of spec Bird C8-5
2855-2863     2855-2863 2627-2643 Bird depth out of spec Bird C8-4
2861-2875     2861-2875 2259-2275 Bird depth out of spec Bird C7-4
2864-2873     2864-2873 2283-2299 Bird depth out of spec Bird C7-5
2865-2877     2865-2877 2627-2643 Bird depth out of spec Bird C8-4
2869-2875     2869-2875 2699-2715 Bird depth out of spec Bird C8-7
2879-2884     2879-2884 1-5 Bird depth out of spec Bird C1-1
2880-2896     2880-2896 2723-2739 Bird depth out of spec Bird C8-8
2881-2892     2881-2892 2651-2667 Bird depth out of spec Bird C8-5
2893-2899     2893-2899 2699-2715 Bird depth out of spec Bird C8-7
2896-2907     2896-2907 2283-2299 Bird depth out of spec Bird C7-5
2900-2912     2900-2912 2675-2691 Bird depth out of spec Bird C8-6
2940-2985     2940-2985 2675-2691 Bird depth out of spec Bird C8-6
2968-2987     2968-2987 1-5 Bird depth out of spec Bird C1-1
3004-3029     3004-3029 1-5 Bird depth out of spec Bird C1-1
3031-3042     3031-3042 1-5 Bird depth out of spec Bird C1-1
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 17:33:00utc 15-May-2002