ACQUISITION REPORT

Locked date: 10-Apr-2007 22:16:13


Sequence: 0028, Line name: GAP07B1520P028, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1520P028
Preplot Line Name1520
Direction197.0°
Chargeable Line Length17212.5m
SOL Time (utc)19:41:19 09-Apr-2007
EOL Time (utc)21:36:17 09-Apr-2007

Attributes
Wind Speed / Direction5.0 / SW[knots]
Swell Height / Direction0.5 / SW[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.814.72[knots]
Water Depth0.0425.0[meters]
Feather Angle1.1-3.2[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise4.183.95[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)1992 - 1963 1992 - 1963 19:37:34 - 19:41:13 
FSP Start of Line1962 1962 19:41:19 09-Apr-2007 
MSP(midnight sp)   
LSP End of Line1045 1045 21:36:17 09-Apr-2007
EOL Dummy Record(s)1044 - 1035 1044 - 1035 21:36:26 - 21:37:35 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1962-10451962 - 104519:41:20 - 21:36:18Prime16ValidProduction Shots

Positioning remark 
Line ok
No runout sp's d/t boat work

Acquisition remark 
SP. 1990 - SOL Noise.
SP. 1962 - SOL @ 19:41
SP. 1045 - EOL @ 21:36
SP. 1043 - EOL Noise.



Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13121992 -  11431992 -  11438501  
13131142 -  10351142 -  10351082  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53121992 -  11431992 -  11438504  
53131142 -  10351142 -  10351085  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL1106-107Noisy Trace(s)AFNoisy trace(s)
ALLALL4222-223Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6133Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8271Spiking AF TracesAFSpiking AF trace(s)
ALLALL3309Spiking AF TracesAFSpiking AF trace(s)
17561756ALLALLIncomplete external headerAFBlock TRIGUN missing
17281728ALLALLIncomplete external headerAFBlock TRIGUN missing
13791379ALLALLIncomplete external headerAFBlock TRIGUN missing
13381338ALLALLIncomplete external headerAFBlock TRIGUN missing
10551055ALLALLIncomplete external headerAFBlock TRIGUN missing
ALLALL3296-297Noisy Trace(s)AFNoisy trace(s)
ALLALL6130-131Spiking AF TracesAFSpiking AF trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6135Spiking AF TracesAFSpiking AF trace(s)

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
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
ALLALL8225Weak 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
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
19901990ALLALLNoise RecordAFSOL Noise Record
10431043ALLALLNoise RecordAFEOL 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: 0028, Line name: GAP07B1520P028, Seismic datatype(s): AF - Locked date: 10-Apr-2007 22:16:13
GENERATED Tuesday, April 10, 2007 10:16:32 PM GMT+00:00