ACQUISITION REPORT

Locked date: 10-Apr-2007 03:08:26


Sequence: 0018, Line name: GAP07B1440P018, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1440P018
Preplot Line Name1440
Direction197.0°
Chargeable Line Length20081.25m
SOL Time (utc)22:34:57 07-Apr-2007
EOL Time (utc)00:52:20 08-Apr-2007

Attributes
Wind Speed / Direction11.0 / SW[knots]
Swell Height / Direction1.0 / SE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.444.84[knots]
Water Depth1372.5320.0[meters]
Feather Angle3.80.0[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise0.05.38[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)2113 - 2093 2113 - 2093 22:32:05 - 22:34:49 
FSP Start of Line2092 2092 22:34:57 07-Apr-2007 
MSP(midnight sp)1436 1436 23:59:54 07-Apr-2007
LSP End of Line1022 1022 00:52:20 08-Apr-2007
EOL Dummy Record(s)1021 - 1012 1021 - 1012 00:52:29 - 00:53:36 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
2092-18542092 - 185422:34:57 - 23:07:39Prime16ScratchedShooting halted d/t presence of whales in vicinity
1853-10221853 - 102223:07:47 - 00:52:21Prime16Valid 

Positioning remark 
FGSP 1853 d/t whales
Not shooting on run out d/t workboat activity

Acquisition remark 
SOL. SP's. 2092-1854.... Not shooting d/t presence of whales in vicinity
No SOL Noise Record. Cables surfaced
FGSP. 1853................ SOL @ 23:07
LSP. 1022................. EOL @ 52:20
EOL Noise SP. 1018


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
12872113 -  12592113 -  12598501 FGSP. 1853
12881258 -  10121258 -  10122472  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
52872113 -  12592113 -  12598504 FGSP. 1853
52881258 -  10121258 -  10122475  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
2092-18542092-1854ALLALLWhale sightingAFHalted shooting d/t whale sighting
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL3296-297Noisy Trace(s)AFNoisy trace(s)
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL8118Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6130Spiking AF TracesAFSpiking AF trace(s)
ALLALL6131Spiking AF TracesAFSpiking AF trace(s)
ALLALL6133Spiking AF TracesAFSpiking AF trace(s)
ALLALL6135Spiking AF TracesAFSpiking AF trace(s)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
ALLALL3305Spiking AF TracesAFSpiking AF trace(s)
ALLALL3309Spiking AF TracesAFSpiking AF 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
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
13371337ALLALLIncomplete external headerAFBlock TRIGUN missing
11201120ALLALLIncomplete external headerAFBlock TRIGUN missing
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
ALLALLALLALLNoise 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: 0018, Line name: GAP07B1440P018, Seismic datatype(s): AF - Locked date: 10-Apr-2007 03:08:26
GENERATED Tuesday, April 10, 2007 3:11:33 AM GMT+00:00