ACQUISITION REPORT

Locked date: 19-Apr-2007 04:59:03


Sequence: 0073, Line name: GAP07B1712P073, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1712P073
Preplot Line Name1712
Direction197.0°
Chargeable Line Length16031.25m
SOL Time (utc)15:03:11 18-Apr-2007
EOL Time (utc)17:34:16 18-Apr-2007

Attributes
Wind Speed / Direction10.0 / W[knots]
Swell Height / Direction1.5 / NE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.84.9[knots]
Water Depth2153.0685.0[meters]
Feather Angle3.4-2.4[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise6.535.77[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)4235 - 1957 4235 - 1957 17:35:58 - 15:03:04 
FSP Start of Line1956 1956 15:03:11 18-Apr-2007 
MSP(midnight sp)   
LSP End of Line732 732 17:34:16 18-Apr-2007
EOL Dummy Record(s)731 - 721 731 - 721 17:34:25 - 17:35:50 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1956-11021956 - 110215:03:12 - 16:47:57Prime16ValidProduction Shotpoints
1101-07321101 - 73216:48:05 - 17:34:17Unknown16UnknownShooting on Run-Out

Positioning remark 
P190 made for SP 1956-732. Line Good

Acquisition remark 
Shooting on Run-out


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
14071986 -  11371986 -  11378503  
14081136 -  7321136 -  7324231 LSP 732 -- DNP 4235-4229

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
54071986 -  11371986 -  11378506  
54081136 -  7321136 -  7324234 LSP 732 -- DNP 4235-4229


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
1101-11001101-1100ALLALLGun disabledAFALL Guns Disabled for EOL Noise Record
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL885Spiking AF TracesAFSpiking AF trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Spiking 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
18461846ALLALLIncomplete external headerAFBlock TRIGUN missing
18441844ALLALLIncomplete external headerAFBlock TRIGUN missing
18201820ALLALLIncomplete external headerAFBlock TRIGUN missing
14771477ALLALLIncomplete external headerAFBlock TRIGUN missing
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
ALLALL7194Weak 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
19761976ALLALLNoise RecordAFSOL Noise Record
19561956ALLALLBOLAFFirst production SP
11021102ALLALLEOLAFLast Production Shot Point
11001100ALLALLNoise RecordAFEOL Noise Record
732732ALLALLLast Run-out Shot PointAFLast Run-Out Shot Point



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: 0073, Line name: GAP07B1712P073, Seismic datatype(s): AF - Locked date: 19-Apr-2007 04:59:03
GENERATED Thursday, April 19, 2007 4:59:32 AM GMT+00:00