ACQUISITION REPORT Sequence-0958
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170D
  Survey Type 4 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A4128RHA958
  Preplot G01A4128
  Direction 198.0°
  SOL Date 23:34:20utc 18-Jul-2002
  EOL Date 00:06:52utc 19-Jul-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir NW
   Swell Height 0.5 [meters] Dir W
   Propellor rpm 134 [avg]  
   Propellor pitch 55 [avg]  
       
  SOL EOL  
   Waterdepth 71.1 70.0 [meters]
   Bottomspeed  4.5 5.2 [knots]
   Featherangle port -8.1 sb +4.1 [deg]
   Cable noise 8.3 5.2 [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 -180.0 25.0 -6.0 3542.0 3 24
2 PORT -180.0 -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 -330.0 150.0 -7.0 2600 Nessie-3 12.5 208 0001-0208
2 STBD -330.0 50.0 -7.0 2600 Nessie-3 12.5 208 0209-0416
3 PORT -330.0 -50.0 -7.0 2600 Nessie-3 12.5 208 0417-0624
4 PORT -330.0 -150.0 -7.0 2600 Nessie-3 12.5 208 0625-0832

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 0208 0001-0208 0208 0001 - 0208 5.60
3 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0208 0209-0416 0208 0209 - 0416 5.60
4 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0208 0417-0624 0208 0417 - 0624 5.60
5 SEIS SEGD 8015, Rev.2 NONE 6.0 2.0 0208 0625-0832 0208 0625 - 0832 5.60

Production
  Shotpoint File Time [utc]
   SOL Noise Record(s)   2082 - 2081  
   SOL Dummy Record(s) 2080 - 2051 2080 - 2051 23:30:12 - 23:34:12
   FSP Start of Line 2050 2050 23:34:20
   MSP 1845 1845 23:59:57
   LSP End of Line 1785 1785 00:06:52
   EOL Dummy Record(s)      
   EOL Noise Record(s)   1784 - 1783  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2050 - 1785 2050 - 1785 23:34:20-00:06:52 Reshoot 8 Valid Orthogonal line East of Halibut
 Remarks:      
   Navigation Streamer depth 7.0mtr. Four by 2.6km streamer line. Water speed 5.8 knots at SOL noise record    
   Recording QC Frontsheet Set 6. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1032mB. Using Four by 2.6km streamer. Side swipes present on records.    

Tape-list
Stream 2
   Shot(s) Files Deck Reel Remark
  2082 - 1784 2082 - 1784 1 10166  
Stream 3
   Shot(s) Files Deck Reel Remark
  2082 - 1784 2082 - 1784 3 10166  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 417-721 Bird depth out of spec Bird C3-1 occasionally out of spec, 8.1-8.7m
2030-1935     2030-1935 1-113 Noisy Trace(s) Low frequency, low amplitude noise due ti rip current
2030-1935     2030-1935 220-320 Noisy Trace(s) Low frequency, low amplitude noise due ti rip current
2030-1935     2030-1935 425-535 Noisy Trace(s) Low frequency, low amplitude noise due ti rip current
2030-1935     2030-1935 640-735 Noisy Trace(s) Low frequency, low amplitude noise due ti rip current
1840     1840 ALL Gun Timing Error Gun 5-2 error (ms): -1.6
1800     1800 ALL Gun timing error Gun 5-2 error (ms) : -1.9
1786     1786 ALL Gun timing error Gun 5-2 error (ms) : -1.7
Comment
Shot(s)     File(s) Trace(s) Type Remark
1950-1785     1950-1785 ALL Ship Noise Prop noise increase due to feather swing towards platform


 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 10:28:38utc 19-Jul-2002