ACQUISITION REPORT

Locked date: 08-Apr-2007 03:03:54


Sequence: 0002, Line name: GAP07B1312P002, Seismic datatype(s): AF


<maintitle>ACQUISITION REPORT </maintitle>
Survey
ClientApache
Client Reference Id 
Areaelver
VesselWestern Trident
Job Number9606
Survey Type3D Marine Streamer

Sequence
Line NameGAP07B1312P002
Preplot Line Name1312
Direction197.0°
Chargeable Line Length20812.5m
SOL Time (utc)18:47:15 04-Apr-2007
EOL Time (utc)21:11:55 04-Apr-2007

Attributes
Wind Speed / Direction24.0 / SW[knots]
Swell Height / Direction2.5 / SW[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.314.8[knots]
Water Depth563.0133.0[meters]
Feather Angle0.0-1.6[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise5.370.0[µBar avg rms]
Lowcut Filter Cutoff/Slope2 / 122 / 12[Hz] / [dB/oct]


Production
 
  Shotpoint File Time [utc]
SOL Noise Record(s)   
SOL Dummy Record(s)2123 - 2047 2122 - 2046 18:43:02 - 18:53:47 
FSP Start of Line2046 2045 18:47:15 04-Apr-2007 
MSP(midnight sp)   
LSP End of Line468 467 21:11:55 04-Apr-2007
EOL Dummy Record(s)467 - 433 466 - 432 22:18:06 - 22:22:16 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
2046-09842045 - 98318:53:56 - 21:11:56Prime16ValidFGSP 2046
0983-0468982 - 46721:12:04 - 22:17:59Unknown16UnknownShooting on Run-out

Positioning remark 
FGSP 2046 d/t Trinav problem
Line ok

Acquisition remark 
BOL noise test SP 2119 Tape FIle 2120 SP file 1 out
FSP 2093 @ 18:47
SP 2007-2004 guns off to send config to Nav.
SP 1968 FGSP to confirm @ 19:05
LSP 984 @ : 21:11
EOL noise test NA shooting on run out.
SP 433 EOL @ 22:22



Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
12522123 -  12742122 -  12738503  
12531273 -  4331272 -  4328282  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
52522123 -  12742122 -  12738506  
52531273 -  4331272 -  4328284  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL3296-297Noisy Trace(s)AFNoisy trace(s)
ALLALL4222-223Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Spiking AF TracesAFSpiking AF trace(s)
ALLALL8271Spiking AF TracesAFSpiking AF trace(s)
ALLALL3305Spiking AF TracesAFSpiking AF trace(s)
ALLALL3309Noisy Trace(s)AFNoisy trace(s)
ALLALL8319Dead trace(s)AFAF traces dead
2008-20042007-2003ALLALLGun not firedAFGuns offline to send config to Nav
20072006ALLALLIncomplete external headerAFBlock TRIGUN missing
20062005ALLALLIncomplete external headerAFBlock TRIGUN missing
20052004ALLALLIncomplete external headerAFBlock TRIGUN missing
20042003ALLALLIncomplete external headerAFBlock TRIGUN missing
17601759ALLALLIncomplete external headerAFBlock TRIGUN missing
14481447ALLALLIncomplete external headerAFBlock TRIGUN missing
13181317ALLALLIncomplete external headerAFBlock TRIGUN missing
12721271ALLALLMissing FileAFFile has not been recorded by recording system
12711270ALLALLMissing FileAFFile has not been recorded by recording system
11141113ALLALLIncomplete external headerAFBlock TRIGUN missing
ALLALL170-71Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6130Spiking AF TracesAFSpiking AF trace(s)
ALLALL6133Spiking AF TracesAFSpiking AF trace(s)

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL279Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL7194Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL6289Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL8292Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
20032002ALLALLGun timing errorAFTD Gun 1-7 error (ms) : 1.3
10451044ALLALLSource depth out of specAFTD Source-depth for gun position 1-6 below 8.0 meter (value is: 8.0)
ALLALL513, 36, 52Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
20032002ALLALLSource sequence changeAFTD Source 1 fired at this shot



List of used abbreviations
SOL/EOLStart/End of line.
FSP/LSPFirst/Last shotpoint of the line.
FCSP/LCSPFirst/Last chargeable shotpoint
MSPMidnight (last) shotpoint of the day
FGSP/LGSPFirst/Last Good Shotpoint
FOSP/LOSPFirst/Last Overlap Shotpoint
FSP/LSP R/OFirst/Last Shotpoint Runout
DEC_FILT/SS_FILTFiltered Decimated Single Sensor/Filtered Single Sensor. ALL in the context of Seismic Datatype means both DEC_FILT and SS_FILT
AFArray Formed
DegDegrees: e[0,360]
revRevolutions
utcUniversal Time Coordinate
SPsShotpoints
CMPsCommon midpoints
NTBPNot to be processed
SISeismic interference
No.Number / Number Of

TIM - ACQUISITION REPORT - Sequence: 0002, Line name: GAP07B1312P002, Seismic datatype(s): AF - Locked date: 08-Apr-2007 03:03:54
GENERATED Sunday, April 8, 2007 3:06:04 AM GMT+00:00