ACQUISITION REPORT

Locked date: 08-Apr-2007 03:03:55


Sequence: 0004, Line name: GAP07B1328P004, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1328P004
Preplot Line Name1328
Direction197.0°
Chargeable Line Length20718.75m
SOL Time (utc)04:37:02 05-Apr-2007
EOL Time (utc)06:56:47 05-Apr-2007

Attributes
Wind Speed / Direction23.0 / WSW[knots]
Swell Height / Direction2.5 / SW[meters]
Propeller Speed126[avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.824.34[knots]
Water Depth5.12104.0[meters]
Feather Angle7.70.0[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise9.550.0[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)2123 - 2094 2123 - 2094 04:33:20 - 04:36:55 
FSP Start of Line2093 2093 04:37:02 05-Apr-2007 
MSP(midnight sp)   
LSP End of Line654 654 06:56:47 05-Apr-2007
EOL Dummy Record(s)653 - 646 653 - 646 07:46:23 - 07:47:21 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
2093-09892093 - 98904:37:03 - 06:56:48Prime16ValidValid
0988-0654988 - 65406:56:56 - 07:46:16Unknown16UnknownShooting on Run-out at Client's request

Positioning remark 
P190 prepared for SP 2093-654
Line Ok


Acquisition remark 
SP 2120 : SOL Noise Test
SP 2093 : First SP @ 04:37
SP 989 : Last SP @ 06:56
SP 988-654 : Shooting on Run-out
SP 980 : EOL Noise Test


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
12562123 -  12742123 -  12748503  
12571273 -  6461273 -  6466281  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
52562123 -  12742123 -  12748506  
52571273 -  6461273 -  6466284  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8319Dead trace(s)AFAF traces dead
20772077ALLALLIncomplete external headerAFBlock TRIGUN missing
19071907ALLALLIncomplete external headerAFBlock TRIGUN missing
1906ALLALLMissing FileAFFile has not been recorded by recording system
19041904ALLALLIncomplete external headerAFBlock TRIGUN missing
12961296ALLALLIncomplete external headerAFBlock TRIGUN missing
12241224ALLALLIncomplete external headerAFBlock TRIGUN missing
11311131ALLALLIncomplete external headerAFBlock TRIGUN missing
ALLALL170-71Noisy Trace(s)AFNoisy trace(s)
ALLALL121Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF 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)
ALLALL3271Noisy 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
ALLALL6289Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL8292Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
13201320ALLALLSource depth out of specAFTD Source-depth for gun position 3-5 above 6.0 meter (value is: 6.0)
11121112ALLALLSource depth out of specAFTD Source-depth for gun position 2-4 below 8.0 meter (value is: 8.1)

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
981981ALLALLGun disabledAFAll Guns disabled d/t Noise record.
980980ALLALLNoise 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: 0004, Line name: GAP07B1328P004, Seismic datatype(s): AF - Locked date: 08-Apr-2007 03:03:55
GENERATED Sunday, April 8, 2007 3:06:04 AM GMT+00:00