ACQUISITION REPORT

Locked date: 16-Apr-2007 18:52:14


Sequence: 0062, Line name: GAP07B1984P062, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1984P062
Preplot Line Name1984
Direction17.0°
Chargeable Line Length33618.75m
SOL Time (utc)00:36:10 16-Apr-2007
EOL Time (utc)05:20:55 16-Apr-2007

Attributes
Wind Speed / Direction15.0 / SW[knots]
Swell Height / Direction2.0 / W[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.24.3[knots]
Water Depth1390.02521.0[meters]
Feather Angle-5.11.9[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise0.08.41[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)1029 - 1058 1029 - 1058 00:31:34 - 00:36:04 
FSP Start of Line1059 1059 00:36:10 16-Apr-2007 
MSP(midnight sp)   
LSP End of Line3081 3081 05:20:55 16-Apr-2007
EOL Dummy Record(s)3082 - 3091 3082 - 3091 05:21:05 - 05:22:23 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1059-12881059 - 128800:36:13 - 01:09:02Unknown16UnknownShooting on run in
1289-30811289 - 308101:09:11 - 05:20:56Prime16ValidProduction SP

Positioning remark 
SP 1284-1285 noise strip
Line ok

Acquisition remark 
Shooting on run in.
From approx Sp. 2950 to EOL: Late return from previous shot records seen @ 1 to 1.3 sec. Abeam of cables, This is also seen on EOL noise record.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13781029 -  18781029 -  18788502  
13791879 -  27281879 -  27288503  
13802729 -  30912729 -  30913631  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53781029 -  18781029 -  18788505  
53791879 -  27281879 -  27288506  
53802729 -  30912729 -  30913634  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL749Dead trace(s)AFAF traces dead
ALLALL698Spiking AF TracesAFSpiking AF 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)
ALLALL4230Spiking AF TracesAFSpiking AF trace(s)
ALLALL8271Dead trace(s)AFAF traces dead
1284-12851284-1285ALLALLGun disabledAFGun . New source volume cu.inch.
22432243ALLALLIncomplete external headerAFBlock TRIGUN missing
24332433ALLALLIncomplete external headerAFBlock TRIGUN missing
30623062ALLALLIncomplete external headerAFBlock TRIGUN missing

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
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
13731373ALLALLGun timing errorAFTD Gun 3-2 error (ms) : 1.6
26432643ALLALLGun timing errorAFTD Gun 3-2 error (ms) : 1.7
30813081ALLALLEOLAFLast Production Sp.

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
10591059ALLALLFSPAFShooting on run in
12851285ALLALLNoise RecordAFSOL Noise Record
12891289ALLALLBOLAFFirst production SP
30833083ALLALLNoise 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: 0062, Line name: GAP07B1984P062, Seismic datatype(s): AF - Locked date: 16-Apr-2007 18:52:14
GENERATED Monday, April 16, 2007 6:52:32 PM GMT+00:00