ACQUISITION REPORT

Locked date: 21-Apr-2007 20:27:38


Sequence: 0086, Line name: GAP07B1840J086, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1840J086
Preplot Line Name1840
Direction197.0°
Chargeable Line Length18037.5m
SOL Time (utc)07:06:42 21-Apr-2007
EOL Time (utc)09:10:53 21-Apr-2007

Attributes
Wind Speed / Direction16.0 / SE[knots]
Swell Height / Direction1.0 / SE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.44.81[knots]
Water Depth2096.0914.0[meters]
Feather Angle6.8-8.2[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise5.734.45[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)2130 - 2101 2130 - 2101 07:02:35 - 07:06:35 
FSP Start of Line2100 2100 07:06:42 21-Apr-2007 
MSP(midnight sp)   
LSP End of Line1139 1139 09:10:53 21-Apr-2007
EOL Dummy Record(s)1138 - 1120 1138 - 1120 09:11:01 - 09:13:19 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
2100-11392100 - 113907:06:43 - 09:10:54Infill16ValidInfill line

Positioning remark 
Line OK

Acquisition remark 
Infill



Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
14392130 -  12812130 -  12818502  
14401280 -  11201280 -  11201613  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
54392130 -  12812130 -  12818505  
54401280 -  11201280 -  11201616  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
12421242ALLALLIncomplete external headerAFBlock TRIGUN missing
ALLALL4190, 230Spiking AF TracesAFSpiking AF trace(s)
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL1106-107Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL8141Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL8220Spiking AF TracesAFSpiking AF trace(s)
ALLALL8258Spiking 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
ALLALL8225, 230Weak 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
ALLALL6289Weak 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
21272127ALLALLNoise RecordAFSOL Noise Record
21002100ALLALLBOLAFFirst Infill Shotpoint
11391139ALLALLEOLAFLast Infill Shotpoint
11201120ALLALLNoise 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: 0086, Line name: GAP07B1840J086, Seismic datatype(s): AF - Locked date: 21-Apr-2007 20:27:38
GENERATED Saturday, April 21, 2007 8:28:27 PM GMT+00:00