ACQUISITION REPORT

Locked date: 08-Apr-2007 03:03:56


Sequence: 0008, Line name: GAP07B1360P008, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1360P008
Preplot Line Name1360
Direction197.0°
Chargeable Line Length20531.25m
SOL Time (utc)23:40:27 05-Apr-2007
EOL Time (utc)02:03:04 06-Apr-2007

Attributes
Wind Speed / Direction25.0 / SE[knots]
Swell Height / Direction3.0 / SE[meters]
Propeller Speed125[avg rpm]
Propeller Pitch65[avg %]

  SOL EOL 
Bottom Speed4.74.5[knots]
Water Depth625.0115.0[meters]
Feather Angle0.52.9[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise0.00.0[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)2122 - 2093 2122 - 2093 23:36:28 - 23:40:20 
FSP Start of Line2092 2092 23:40:27 05-Apr-2007 
MSP(midnight sp)1939 1939 23:59:55 05-Apr-2007
LSP End of Line1332 1332 02:03:04 06-Apr-2007
EOL Dummy Record(s)1331 - 988 1331 - 988 01:18:10 - 02:04:30 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
2092-13322092 - 133223:40:28 - 01:18:02Prime16ValidLGSP d/t guns

Positioning remark 
LGSP 1332 d/t gun air leak

Acquisition remark 
SP 2120 BOL noise test
BOL SP 2092 @ 23:40
LGSP 1332 @ 01:18 due to autofire on gun string 1
EOL SP 998 @ 02:03 do not process SP 1331-998


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
12652122 -  12732122 -  12738503  
12661272 -  9881272 -  9882851 LGSp. 1332. Do not Process Sp's 1331-998.

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
52652122 -  12732122 -  12738506  
52661272 -  9881272 -  9882854  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
15261526ALLALLIncomplete external headerAFBlock TRIGUN missing
14171417ALLALLGun autofireAFTD Gun 1-8 at 910 ms after aimpoint
13891389ALLALLGun autofireAFTD Gun 1-8 at 940 ms after aimpoint
13771377ALLALLGun autofireAFTD Gun 1-8 at 920 ms after aimpoint
13751375ALLALLGun autofireAFTD Gun 1-8 at 910 ms after aimpoint
1331-9981331-998ALLALLAutofireAFGun(s)
ALLALL833Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL279Spiking AF TracesAFSpiking AF trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL8119Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6130Spiking AF TracesAFSpiking AF trace(s)
ALLALL6131Spiking AF TracesAFSpiking AF trace(s)
ALLALL6133Noisy Trace(s)AFNoisy trace(s)
ALLALL6135Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Spiking AF TracesAFSpiking AF trace(s)
ALLALL7194Dead trace(s)AFAF traces dead
ALLALL3271Spiking AF TracesAFSpiking AF trace(s)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
ALLALL3296Noisy Trace(s)AFNoisy trace(s)
ALLALL8319Dead trace(s)AFAF traces dead

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
19671967ALLALLGun autofireAFTD Gun 1-8 at 970 ms after aimpoint
18331833ALLALLGun autofireAFTD Gun 1-8 at 930 ms after aimpoint
18211821ALLALLGun autofireAFTD Gun 1-8 at 940 ms after aimpoint
18071807ALLALLGun autofireAFTD Gun 1-8 at 930 ms after aimpoint
ALLALL513, 36, 52Weak 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



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: 0008, Line name: GAP07B1360P008, Seismic datatype(s): AF - Locked date: 08-Apr-2007 03:03:56
GENERATED Sunday, April 8, 2007 3:06:05 AM GMT+00:00