ACQUISITION REPORT

Locked date: 20-Apr-2007 17:46:16


Sequence: 0077, Line name: GAP07B1728P077, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1728P077
Preplot Line Name1728
Direction197.0°
Chargeable Line Length15937.5m
SOL Time (utc)12:05:14 19-Apr-2007
EOL Time (utc)14:33:40 19-Apr-2007

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

  SOL EOL 
Bottom Speed4.94.7[knots]
Water Depth1951.0683.0[meters]
Feather Angle-5.7-0.9[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise5.520.0[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)4311 - 1956 4311 - 1956 14:34:47 - 12:05:07 
FSP Start of Line1955 1955 12:05:14 19-Apr-2007 
MSP(midnight sp)  00:00:00 00-???-00
LSP End of Line778 778 14:33:40 19-Apr-2007
EOL Dummy Record(s)777 - 768 777 - 768 14:33:22 - 14:34:37 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1955-11061955 - 110612:05:14 - 13:49:41Prime16ValidProduction Shotpoints
1105-07781105 - 77813:49:49 - 14:33:13Unknown16UnknownShooting on run out

Positioning remark 
SP 1941 not issuing APM
SP 859-856, 828-825 DNP'd d/t unable to solve network on turn
Line ok

Acquisition remark 
Extra SPs recorded before BOL d/t Nav. DNP SP 2123-1956
Shooting on Run-out.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
14182123 -  11482123 -  11488501 FSP 1955
14191147 -  7781147 -  7783862 LSP 778

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
54182123 -  11482123 -  11488504 FSP 1955
54191147 -  7781147 -  7783865 LSP 778


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
2123-21112123-2111ALLALLDNPAFDNP - Extra Shots Recorded d/t Navigation
1985-19561985-1956ALLALLDNPAFDNP- Extra shots recorded d/t Nav
1941ALLALLMissing shot timeAFMissing shot time due to lost aimpoint
131013103104-105Spiking AF TracesAFSpiking AF trace(s)
859-856859-856ALLALLDNPAFDo Not Process. Navigation does not resolve.
828-825828-825ALLALLDNPAFDo Not Process. Navigation does not resolve.
ALLALL1106-107Noisy Trace(s)AFNoisy trace(s)
ALLALL4222-223Noisy Trace(s)AFNoisy trace(s)
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy 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)
ALLALL8258Noisy Trace(s)AFNoisy trace(s)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
ALLALL8292Spiking AF TracesAFSpiking AF trace(s)

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
17941794ALLALLIncomplete external headerAFBlock TRIGUN missing
17681768ALLALLIncomplete external headerAFBlock TRIGUN missing
13661366ALLALLIncomplete 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
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
19801980ALLALLNoise RecordAFSOL Noise Record
19551955ALLALLBOLAFFirst Production SP.
11061106ALLALLEOLAFLast Production SP.
778778ALLALLLast 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: 0077, Line name: GAP07B1728P077, Seismic datatype(s): AF - Locked date: 20-Apr-2007 17:46:16
GENERATED Friday, April 20, 2007 5:46:40 PM GMT+00:00