ACQUISITION REPORT Sequence-0040

    
 Survey:  
  Client Esso Australia Pty Ltd
  Area Northern Fields 3D
  Vessel GECO_BETA
  JobNumber 9170A
  Survey Type 8 STREAMER DUAL SOURCE
   
 Sequence  
  Linename G01A3216B040
  Preplot  G01A3216
  Direction 18.0°
  SOL Date 23:02:02utc 08-Nov-2001
  EOL Date 00:56:10utc 09-Nov-2001
 Attributes:  
   Wind Force 10.0 [knots] Dir ENE
   Swell Height 2.0 [meters] Dir ENE
   Propellor rpm 122 [avg]  
   Propellor pitch 75 [avg]  
       
  SOL EOL  
   Waterdepth 50.0 43.1 [meters]
   Bottomspeed  3.4 3.5 [knots]
   Featherangle sb +3.7 sb +6.5 [deg]
   Cable noise 7.8 5.73 [µBar rms]
   Lowcut filter 3 3 [hz]
   Filter slope 18 18 [dB]
   Port Volume 3542 3072  
   Stbd Volume 3542 3072  
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)   4134 - 3457  
   SOL Dummy Record(s) 3459 - 3468 3459 - 3468 23:00:16 - 23:01:51
   FSP Start of Line 3469 3469 23:02:02
   MSP 3802 3802 23:59:58
   LSP End of Line 4132 4132 00:56:10
   EOL Dummy Record(s)
   EOL Noise Record(s)   4133-4134  
 Line-segments:
    SPs Files Times [utc] Type # CMPs Status Remarks
    3469 - 4132 3469-4132 23:02:02-00:56:10 Reshoot 16 Valid  
 Remarks:      
   Navigation Streamer depth at 7m    
   Recording QC Filter delay 5.6ms. Frontsheet Set 3. Gundepth calibrated at atmospheric pressure 1004mB, pressure now 1012mB. Str 8 Bird 1 mask on External Header, constantly deep, 8.1m. All gun DI's occ erratic d/t swell. Swell noise seen on all cables approx 5-10%     
Tape-list
Stream 1
   Shot(s) Files Deck Reel Remark
  3457 - 3886 3457 - 3886 1 167  
  3887 - 4134 3887 - 4134 1 168  
Stream 2
   Shot(s) Files Deck Reel Remark
  3457 - 3886 3457 - 3886 4 167  
  3887 - 4134 3887 - 4134 3 168  

Seismic Data Annotations

NTBP
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 1191, 1948 Weak Traces Weak trace: 1191, 1948, more than -6 dB down
ALL     ALL 304, 2919 Noisy Channels  
3469-3471     3469-3471 1827-1840 Bird depth out of spec Bird C5-17
3569-3614     3569-3614 1827-1840 Bird depth out of spec Bird C5-17
Warning
Shot(s)     File(s) Trace(s) Type Remark
ALL     ALL 2301 Fails Crossfeed  
ALL     ALL ALL Swell Noise Swell noise seen on all cables approx 5-10%
ALL     ALL ALL Gun PI Gun PI string 2 occ erratic readings.
ALL     ALL 1-14, 16, 369-383, 389, 737-753, 755, 757-759, 763-764, 1105-1113, 1126, 1130-1131, 1473, 1481-1485, 1487, 1489, 1493, 1499, 1841-1842, 1845, 1849-1850, 1852, 1855-1856, 1860, 2209-2214, 2216-2217, 2225, 2229, 2232, 2585 Slope alarm > 5% of total line
ALL     ALL ALL Guns disabled Guns 1-1, 1-2, 6-1, 6-2 disabled from sp 3072 d/t low air 
3472-3483    3472-3483 NONE Bird depth out of spec Bird C5-17
3536    3536 NONE Bird depth out of spec Bird C5-17
3545    3545 NONE Bird depth out of spec Bird C5-17
3560    3560 NONE Bird depth out of spec Bird C5-17
3568    3568 NONE Bird depth out of spec Bird C5-17
3601-3604    3601-3604 NONE Bird depth out of spec Bird C5-16
3615-3617    3615-3617 NONE Bird depth out of spec Bird C5-17
3624-3629    3624-3629 NONE Bird depth out of spec Bird C5-17
3631    3631 NONE Bird depth out of spec Bird C6-2
3791    3791 NONE Bird depth out of spec Bird C6-4
3799    3799 NONE Bird depth out of spec Bird C6-2
3818    3818 NONE Bird depth out of spec Bird C6-2
3821    3821 NONE Bird depth out of spec Bird C6-2
3849    3849 NONE Bird depth out of spec Bird C6-2
3850    3850 NONE Bird depth out of spec Bird C1-3
3852-3867    3852-3867 NONE Bird depth out of spec Bird C1-3
3854    3854 NONE Bird depth out of spec Bird C1-4
3855-3858    3855-3858 NONE Bird depth out of spec Bird C6-2
3860    3860 NONE Bird depth out of spec Bird C1-4
3863-3865    3863-3865 NONE Bird depth out of spec Bird C6-2
3867-3868    3867-3868 NONE Bird depth out of spec Bird C1-4
3870    3870 NONE Bird depth out of spec Bird C1-3
3871    3871 NONE Bird depth out of spec Bird C6-2
3873    3873 NONE Bird depth out of spec Bird C6-2
3876-3877    3876-3877 NONE Bird depth out of spec Bird C6-2
3879-3881    3879-3881 NONE Bird depth out of spec Bird C6-2
3884-3886    3884-3886 NONE Bird depth out of spec Bird C6-2
3930-3931    3930-3931 NONE Bird depth out of spec Bird C6-2
3939    3939 NONE Bird depth out of spec Bird C6-2
3941    3941 NONE Bird depth out of spec Bird C6-2
3943    3943 NONE Bird depth out of spec Bird C6-2
3968-3970    3968-3970 NONE Bird depth out of spec Bird C5-13
3972-4064    3972-4064 NONE Bird depth out of spec Bird C5-13
3985-4106    3985-4106 NONE Bird depth out of spec Bird C1-17
3985-3990    3985-3990 NONE Bird depth out of spec Bird C8-17
3988-4006    3988-4006 NONE Bird depth out of spec Bird C1-3
3991-4012    3991-4012 NONE Bird depth out of spec Bird C1-4
3992-4132    3992-4132 NONE Bird depth out of spec Bird C8-17
3997    3997 NONE Bird depth out of spec Bird C6-2
3998-4013    3998-4013 NONE Bird depth out of spec Bird C1-5
4001    4001 NONE Bird depth out of spec Bird C6-7
4014    4014 NONE Bird depth out of spec Bird C1-4
4066-4078    4066-4078 NONE Bird depth out of spec Bird C5-13
4071    4071 NONE Bird depth out of spec Bird C6-3
4077-4078    4077-4078 NONE Bird depth out of spec Bird C5-17
4080-4084    4080-4084 NONE Bird depth out of spec Bird C6-3
4081    4081 NONE Bird depth out of spec Bird C5-13
4081    4081 NONE Bird depth out of spec Bird C5-17
4083    4083 NONE Bird depth out of spec Bird C5-13
4083-4100    4083-4100 NONE Bird depth out of spec Bird C5-17
4086    4086 NONE Bird depth out of spec Bird C5-13
4086-4091    4086-4091 NONE Bird depth out of spec Bird C6-3
4089-4090    4089-4090 NONE Bird depth out of spec Bird C5-13
4092-4093    4092-4093 NONE Bird depth out of spec Bird C5-13
4093-4094    4093-4094 NONE Bird depth out of spec Bird C6-3
4097    4097 NONE Bird depth out of spec Bird C5-13
4097-4107    4097-4107 NONE Bird depth out of spec Bird C6-3
4102-4132    4102-4132 NONE Bird depth out of spec Bird C5-17
4103-4106    4103-4106 NONE Bird depth out of spec Bird C5-13
4105    4105 ALL Source depth out of spec Source-depth for gun position 5-6 above 5.5 meter
4108-4132    4108-4132 NONE Bird depth out of spec Bird C1-17
4109-4110    4109-4110 NONE Bird depth out of spec Bird C5-13
4115-4132    4115-4132 NONE Bird depth out of spec Bird C5-13
Comment
Shot(s)     File(s) Trace(s) Type Remark
3484-4133    3484-4133 ALL Gun disabled Gun 1-1 & 1-2. Source volume at shot 3484 : 3072 cu.in.
3484-4133    3484-4133 ALL Gun disabled Gun 6-1. Source volume at shot 3484 : 3072 cu.in.
3484-4133    3484-4133 ALL Gun disabled Gun 6-2. Source volume at shot 3484 : 3072 cu.in.
3800    3800 ALL Cable Imbalance Cable imbalance seen from this sp d/t vsl slow speed/currents...

 
 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 05:19:17utc 09-Nov-2001