ACQUISITION REPORT

Locked date: 24-Apr-2007 18:40:08


Sequence: 0095, Line name: GAP07B1104J095, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1104J095
Preplot Line Name1104
Direction17.0°
Chargeable Line Length21975.0m
SOL Time (utc)00:15:46 23-Apr-2007
EOL Time (utc)02:43:37 23-Apr-2007

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

  SOL EOL 
Bottom Speed4.64.49[knots]
Water Depth140.0325.0[meters]
Feather Angle-6.6-6.1[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise8.411.84[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)1000 - 1029 1000 - 1029 00:11:50 - 00:15:38 
FSP Start of Line1030 1030 00:15:46 23-Apr-2007 
MSP(midnight sp)   
LSP End of Line2201 2201 02:43:37 23-Apr-2007
EOL Dummy Record(s)2202 - 2211 2202 - 2211 02:43:46 - 02:44:59 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1030-22011030 - 220100:15:46 - 02:43:38Infill16ValidInfill Shotpoints

Positioning remark 
Line ok

Acquisition remark 
Infill Line.
Cable depths unstable and continuous breakout present at 10% of traces at approx 20-30uB.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
14571000 -  18491000 -  18498501  
14581850 -  22111850 -  22113622  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
54571000 -  18491000 -  18498504  
54581850 -  22111850 -  22113625  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL1106-107Noisy Trace(s)AFNoisy trace(s)
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL4222-223Noisy Trace(s)AFNoisy trace(s)
ALLALL3210, 271Noisy Trace(s)AFNoisy trace(s)
ALLALL5105-106Noisy Trace(s)AFNoisy trace(s)
ALLALL5234, 272Spiking AF TracesAFSpiking AF trace(s)
ALLALL8204, 268Spiking AF TracesAFSpiking AF trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL259Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL7118Spiking AF TracesAFSpiking AF trace(s)
ALLALL8141Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Spiking AF TracesAFSpiking AF trace(s)
ALLALL8220Spiking AF TracesAFSpiking AF trace(s)
ALLALL4230Spiking AF TracesAFSpiking AF trace(s)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL513, 36, 52Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL8230, 292Weak 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
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
10841084ALLALLIncomplete external headerAFBlock TRIGUN missing
11101110ALLALLIncomplete external headerAFBlock TRIGUN missing
18221822ALLALLIncomplete external headerAFBlock TRIGUN missing

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
10101010ALLALLNoise RecordAFSOL Noise Record
10301030ALLALLBOLAFFirst Infill SP.
22012201ALLALLEOLAFLast Infill Shotpoint.
22042204ALLALLNoise 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: 0095, Line name: GAP07B1104J095, Seismic datatype(s): AF - Locked date: 24-Apr-2007 18:40:08
GENERATED Tuesday, April 24, 2007 6:40:50 PM GMT+00:00