ACQUISITION REPORT

Locked date: 17-Apr-2007 18:25:58


Sequence: 0065, Line name: GAP07B1680P065, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1680P065
Preplot Line Name1680
Direction197.0°
Chargeable Line Length16237.5m
SOL Time (utc)19:39:13 16-Apr-2007
EOL Time (utc)21:28:16 16-Apr-2007

Attributes
Wind Speed / Direction5.0 / N[knots]
Swell Height / Direction2.5 / S[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.94.92[knots]
Water Depth1825.0595.0[meters]
Feather Angle0.02.9[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise8.636.51[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)1987 - 1958 1987 - 1958 19:35:26 - 19:39:07 
FSP Start of Line1957 1957 19:39:13 16-Apr-2007 
MSP(midnight sp)   
LSP End of Line1092 1092 21:28:16 16-Apr-2007
EOL Dummy Record(s)1091 - 976 1091 - 976 21:28:25 - 21:43:02 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1957-10921957 - 109219:39:14 - 21:28:17Prime16ValidProduction Sp's

Positioning remark 
P190 Made for SP 1957-1092, Line Good

Acquisition remark 
Swell noise evident throughout line.
No shooting on run out d/t NAV problem GPS.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13871987 -  11381987 -  11388501  
13881137 -  9771137 -  9771612  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53871987 -  11381987 -  11388504  
53881137 -  9771137 -  9771615  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8271Noisy Trace(s)AFNoisy trace(s)

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
16761676ALLALLIncomplete external headerAFBlock TRIGUN missing
15431543ALLALLIncomplete external headerAFBlock TRIGUN missing
14461446ALLALLIncomplete external headerAFBlock TRIGUN missing
14311431ALLALLIncomplete external headerAFBlock TRIGUN missing
ALLALL513, 36, 52Weak 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

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
19851985ALLALLNoise RecordAFSOL Noise Record
19571957ALLALLSOLAFFirst Production Shot Point
10921092ALLALLEOLAFLast Production Shot Point
10901090ALLALLNoise 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: 0065, Line name: GAP07B1680P065, Seismic datatype(s): AF - Locked date: 17-Apr-2007 18:25:58
GENERATED Tuesday, April 17, 2007 6:26:46 PM GMT+00:00