ACQUISITION REPORT

Locked date: 24-Apr-2007 04:28:44


Sequence: 0097, Line name: GAP07B1216J097, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1216J097
Preplot Line Name1216
Direction17.0°
Chargeable Line Length18768.75m
SOL Time (utc)09:04:08 23-Apr-2007
EOL Time (utc)11:23:04 23-Apr-2007

Attributes
Wind Speed / Direction20.0 / SSE[knots]
Swell Height / Direction4.0 / SE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.434.34[knots]
Water Depth262.00.0[meters]
Feather Angle0.00.5[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise11.199.42[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)1170 - 1199 1170 - 1199 08:59:57 - 09:04:01 
FSP Start of Line1200 1200 09:04:08 23-Apr-2007 
MSP(midnight sp)   
LSP End of Line2200 2200 11:23:04 23-Apr-2007
EOL Dummy Record(s)2201 - 2210 2201 - 2210 11:23:13 - 11:24:28 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1200-22001200 - 220009:04:09 - 11:23:05Infill16ValidInfill Shotpoint.

Positioning remark 
P190 made for SP 1200-2200.
Str 5 and 7 on surface online.
Line Ok

Acquisition remark 
Infill Line.
Cable depths unstable, Random breakout on streamers @ 20% approx. 3-40 uB. due to sea state.
Sp's 1350-1550 Cable 7 shallow 0-6 mtrs,
Sp 1550 Cable 7 Depth set to 9m.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
14611170 -  20191170 -  20198501  
14622020 -  21382020 -  21381192 Copy of copy d/t no EOF mark.
14632139 -  22102139 -  2210723  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
54611170 -  20191170 -  20198504  
54622020 -  21452020 -  21451265  
54632146 -  22102146 -  2210656  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL4190, 230Spiking AF TracesAFSpiking AF trace(s)
ALLALL8269, 271Noisy Trace(s)AFNoisy trace(s)
ALLALL1106-107Noisy Trace(s)AFNoisy trace(s)
ALLALL4222-223Noisy Trace(s)AFNoisy trace(s)
ALLALL3128, 271Spiking AF TracesAFSpiking AF trace(s)
ALLALL554, 105-106Noisy Trace(s)AFNoisy trace(s)
ALLALL7107, 118Noisy Trace(s)AFNoisy trace(s)
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL8141, 220Spiking AF TracesAFSpiking AF trace(s)
ALLALL8267-268Spiking AF TracesAFSpiking AF trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL259Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
1348-14661348-1466723-122Noisy Trace(s)AFNoisy trace(s)
1360-15171360-15177123-194Noisy Trace(s)AFNoisy trace(s)
1391-15331391-15337195-243Noisy Trace(s)AFNoisy trace(s)
1417-15511417-15517244-306Noisy Trace(s)AFNoisy trace(s)
14311431ALLALLIncomplete external headerAFBlock TRIGUN missing

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
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
ALLALL6289Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
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
11731173ALLALLNoise RecordAFSOL Noise Record
12001200ALLALLInfillAFFirst Infill Shotpoint.
22002200ALLALLInfillAFLast Infill Shotpoint.
22032203ALLALLNoise 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: 0097, Line name: GAP07B1216J097, Seismic datatype(s): AF - Locked date: 24-Apr-2007 04:28:44
GENERATED Tuesday, April 24, 2007 4:29:18 AM GMT+00:00