ACQUISITION REPORT Sequence-0925
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170D
  Survey Type 4 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A7688KWT925
  Preplot G01A7688WT
  Direction 108.0°
  SOL Date 15:06:26utc 13-Jul-2002
  EOL Date 15:41:00utc 13-Jul-2002
 Attributes:  
   Wind Force 10.0 [knots] Dir NW
   Swell Height 1.0 [meters] Dir E
   Propellor rpm 135 [avg]  
   Propellor pitch 60 [avg]  
       
  SOL EOL  
   Waterdepth 55.0 60.0 [meters]
   Bottomspeed  4.7 4.5 [knots]
   Featherangle port -3.5 port -5.8 [deg]
   Cable noise 4.8 8.4 [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)   2342 - 2341  
   SOL Dummy Record(s) 2340 - 2311 2340 - 2311 15:02:32 - 15:06:18
   FSP Start of Line 2310 2310 15:06:26
   MSP      
   LSP End of Line 2050 2050 15:41:00
   EOL Dummy Record(s)      
   EOL Noise Record(s)   2049 - 2048  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    2310 - 2050 2310 - 2050 15:06:26-15:41:00 Infill 8 Valid Orthogonal line North of West Tuna platform
 Remarks:      
   Navigation Streamer depth 7.0mtr. Four by 2.6km streamer line.    
   Recording QC Frontsheet Set 6. Gundepth calibrated at atmospheric pressure 1014mB, pressure now 1012mB. Using Four by 2.6km streamer. Side swipes present on records. Ocassional swell bursts.    

Tape-list
Stream 2
   Shot(s) Files Deck Reel Remark
  2342 - 2049 2342 - 2049 1 10133  
Stream 3
   Shot(s) Files Deck Reel Remark
  2342 - 2049 2342 - 2049 4 10133  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
2112-2100     2112-2100 417-421 Bird depth out of spec Bird C3-1, max dept 9.4m
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 417-421 Bird depth out of spec Bird C3-1, ocassional deep 8.1-9.0m
ALL     ALL 1-26, 28-29, 209-226, 228-229, 232-233, 237, 417-435, 437-446, 450, 454, 625-642, 644-654, 656 Slope alarm > 5% of total line
2240-2150     2240-2150 ALL Rig noise/Ship noise Low level noise from rig <5µB
Comment
Shot(s)     File(s) Trace(s) Type Remark
2310     2310 ALL Swell Noise Swell bursts affecting <5% of traces, 5µB RMS


 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 01:59:03utc 14-Jul-2002