ACQUISITION REPORT

Locked date: 21-Apr-2007 20:27:39


Sequence: 0085, Line name: GAP07B1840A085, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1840A085
Preplot Line Name1840
Direction197.0°
Chargeable Line Length10443.75m
SOL Time (utc)04:39:52 21-Apr-2007
EOL Time (utc)05:52:07 21-Apr-2007

Attributes
Wind Speed / Direction12.0 / SE[knots]
Swell Height / Direction1.0 / SE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.614.7[knots]
Water Depth2449.02055.0[meters]
Feather Angle3.4-0.5[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise4.194.42[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)3235 - 3206 3235 - 3206 04:35:58 - 04:39:45 
FSP Start of Line3205 3205 04:39:52 21-Apr-2007 
MSP(midnight sp)   
LSP End of Line2649 2649 05:52:07 21-Apr-2007
EOL Dummy Record(s)2648 - 2639 2648 - 2639 05:52:16 - 05:53:26 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
3205-30023205 - 300204:39:53 - 05:06:20Reshoot16ValidReshoot Seq. 63.
3001-29203001 - 292005:06:28 - 05:16:59Infill16ValidInfill
2919-27372919 - 273705:17:07 - 05:40:45Unknown0ScratchedDo Not Process. Data Not Required.
2736-26492736 - 264905:40:53 - 05:52:08Reshoot16ValidReshoot Seq. 55

Positioning remark 
Line ok

Acquisition remark 

Reshoots of Seq. 55 & 63. Plus Infill.



Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
14383235 -  26393235 -  26395971  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
54383235 -  26393235 -  26395974  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
31743174ALLALLIncomplete external headerAFBlock TRIGUN missing
31463146ALLALLIncomplete external headerAFBlock TRIGUN missing
2919-27372919-2737ALLALLDNPAFDo Not Process. Data Not Required.
ALLALL4190, 230Spiking AF TracesAFSpiking AF trace(s)
ALLALL1106-107Noisy 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)
ALLALL8141Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL8220Spiking AF TracesAFSpiking AF trace(s)
ALLALL8249Spiking 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
32323232ALLALLNoise RecordAFSOL Noise Record
32053205ALLALLBOLAFFirst Reshoot Shotpoint. Seq. 63.
30123012ALLALLReshootAFLast Reshoot Shotpoint.
30023002ALLALLReshootAFLast Reshoot Overlap Shotpoint.
30013001ALLALLInfillAFFirst Infill Shotpoint.
29202920ALLALLInfillAFLast Infill Shotpoint.
27362736ALLALLReshootAFFirst Reshoot Overlap Shotpoint. Seq 55.
27262726ALLALLReshootAFFirst Reshoot Shotpoint.
26592659ALLALLReshootAFLast Reshoot Shotpoint.
26492649ALLALLEOLAFLast Reshoot Overlap Shotpoint.
26462646ALLALLNoise 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: 0085, Line name: GAP07B1840A085, Seismic datatype(s): AF - Locked date: 21-Apr-2007 20:27:39
GENERATED Saturday, April 21, 2007 8:28:20 PM GMT+00:00