ACQUISITION REPORT

Locked date: 10-Apr-2007 03:08:20


Sequence: 0005, Line name: GAP07B1040P005, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1040P005
Preplot Line Name1040
Direction17.0°
Chargeable Line Length22331.25m
SOL Time (utc)09:21:35 05-Apr-2007
EOL Time (utc)11:49:03 05-Apr-2007

Attributes
Wind Speed / Direction16.0 / SSW[knots]
Swell Height / Direction2.5 / SW[meters]
Propeller Speed126[avg rpm]
Propeller Pitch60[avg %]

  SOL EOL 
Bottom Speed4.74.29[knots]
Water Depth105.0300.0[meters]
Feather Angle7.0-4.3[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise0.166.5[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)751 - 780 751 - 780 08:47:35 - 08:51:17 
FSP Start of Line781 781 09:21:35 05-Apr-2007 
MSP(midnight sp)   
LSP End of Line2201 2201 11:49:03 05-Apr-2007
EOL Dummy Record(s)2202 - 2211 2202 - 2211 11:49:11 - 11:50:18 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
0781-1010781 - 101008:51:25 - 09:21:28Unknown16UnknownShooting on Run-in at client's request
1011-22011011 - 220109:21:35 - 11:49:04Prime16Valid 

Positioning remark 
Line ok

Acquisition remark 
SP 755 : SOL Noise Test
SP 781-1010 : Shooting on Run-in
SP 1011 : First SP @ 09:21
SP 2201 : Last SP @ 11:49
SP 2203 : EOL Noise Test


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
1258751 -  1600751 -  16008502  
12591601 -  22111601 -  22116113  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
5258751 -  1600751 -  16008505  
52591601 -  22111601 -  22116116  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL170-71Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6133Spiking AF TracesAFSpiking AF trace(s)
ALLALL6135Spiking AF TracesAFSpiking AF trace(s)
ALLALL3271Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8319Dead trace(s)AFAF traces dead
11971197ALLALLIncomplete external headerAFBlock TRIGUN missing
20612061ALLALLIncomplete external headerAFBlock TRIGUN missing

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
OPENOPENALLALLNFHAFNFH 3-3 noisy. Pos, slight air leak.
ALLALL513Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL536Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL552Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL279Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL7194Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
10641064ALLALLGun timing errorAFTD Gun 5-2 error (ms) : 1.3

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALLALLALLNoise RecordAFEOL Noise Record
755755ALLALLNoise RecordAFSOL Noise Record



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: 0005, Line name: GAP07B1040P005, Seismic datatype(s): AF - Locked date: 10-Apr-2007 03:08:20
GENERATED Tuesday, April 10, 2007 3:11:22 AM GMT+00:00