ACQUISITION REPORT

Locked date: 21-Apr-2007 22:19:13


Sequence: 0084, Line name: GAP07B1936A084, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1936A084
Preplot Line Name1936
Direction17.0°
Chargeable Line Length37762.5m
SOL Time (utc)22:01:48 20-Apr-2007
EOL Time (utc)01:59:13 21-Apr-2007

Attributes
Wind Speed / Direction8.0 / E[knots]
Swell Height / Direction1.0 / NE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.84.4[knots]
Water Depth1304.02537.0[meters]
Feather Angle9.10.0[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise0.03.59[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)1245 - 1274 1245 - 1274 21:58:02 - 22:01:42 
FSP Start of Line1275 1275 22:01:48 20-Apr-2007 
MSP(midnight sp)2208 2208 23:59:55 20-Apr-2007
LSP End of Line3100 3100 01:59:13 21-Apr-2007
EOL Dummy Record(s)3101 - 3110 3101 - 3110 01:59:22 - 02:00:36 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1275-13561275 - 135622:01:49 - 22:12:04Reshoot16ValidReshoot of seq 46
1357-31001357 - 310022:12:12 - 01:59:14Infill16ValidInfill to EOL

Positioning remark 
Line ok

Acquisition remark 
Reshoot and infill line.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
14341245 -  12551245 -  1255113 Device timed out Dummy SPs only DNP
14351256 -  21051256 -  21058501  
14362106 -  29552106 -  29558502  
14372956 -  31102956 -  31101553  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
54341245 -  12611245 -  1261176 Dummy SP's only
54351262 -  21051262 -  21058444  
54362106 -  29552106 -  29558505  
54372956 -  31102956 -  31101556  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL1106Noisy Trace(s)AFNoisy trace(s)
ALLALL1107Noisy Trace(s)AFNoisy trace(s)
ALLALL7117Noisy Trace(s)AFNoisy trace(s)
ALLALL3128Noisy Trace(s)AFNoisy trace(s)
ALLALL5130Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Spiking AF TracesAFSpiking AF trace(s)
ALLALL8212Noisy Trace(s)AFNoisy trace(s)
ALLALL8213Noisy Trace(s)AFNoisy trace(s)
ALLALL4222Noisy Trace(s)AFNoisy trace(s)
ALLALL4223Noisy Trace(s)AFNoisy trace(s)
ALLALL4230Spiking AF TracesAFSpiking AF trace(s)
ALLALL8258Spiking AF TracesAFSpiking AF trace(s)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
18091809761-62Spiking AF TracesAFSpiking AF trace(s)
18831883124Noisy Trace(s)AFNoisy trace(s)

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
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
ALLALL8225Weak 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
23492349ALLALLIncomplete external headerAFBlock TRIGUN missing

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
12501250ALLALLNoise RecordAFSOL Noise Record
12751275ALLALLBOLAFFirst Reshoot Shot Point
13451345ALLALLReshootAFLast Reshoot Shotpoint
13561356ALLALLReshootAFLast Reshoot Overlap Shotpoint
13571357ALLALLInfillAFFirst Infill Shotpoint.
31003100ALLALLEOLAFLast Infill Shotpoint
31053105ALLALLNoise 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: 0084, Line name: GAP07B1936A084, Seismic datatype(s): AF - Locked date: 21-Apr-2007 22:19:13
GENERATED Saturday, April 21, 2007 10:19:36 PM GMT+00:00