ACQUISITION REPORT

Locked date: 12-Apr-2007 20:59:10


Sequence: 0037, Line name: GAP07B1296P037, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1296P037
Preplot Line Name1296
Direction17.0°
Chargeable Line Length20906.25m
SOL Time (utc)10:32:24 11-Apr-2007
EOL Time (utc)13:20:04 11-Apr-2007

Attributes
Wind Speed / Direction20.0 / SE[knots]
Swell Height / Direction2.0 / SE[meters]
Propeller Speed125[avg rpm]
Propeller Pitch70[avg %]

  SOL EOL 
Bottom Speed4.64.82[knots]
Water Depth236.0467.0[meters]
Feather Angle3.30.07[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise7.497.3[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)880 - 909 880 - 909 10:28:34 - 10:32:17 
FSP Start of Line910 910 10:32:24 11-Apr-2007 
MSP(midnight sp)   
LSP End of Line2200 2200 13:20:04 11-Apr-2007
EOL Dummy Record(s)2201 - 2210 2201 - 2210 13:19:57 - 13:21:05 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
0910-1085910 - 108510:32:24 - 10:54:47Unknown16UnknownShooting on Turn-in
1086-22001086 - 220010:54:55 - 13:19:50Prime16ValidProduction Shots

Positioning remark 
Late start on runin d/t time required for gunners to solve problem with air leak on array #5
10:28 20:28 880 FDSP

10:32 20:32 910 FSP/SOL Shooting on runin at client's request
10:54 20:54 1086 FPPSP
DC 4m F/A 3.3E Depth 238m

13:06 23:06 2093 LPPSP

13:19 23:19 2200 LFFSP/EOL
DC -43m F/A 7.3E Depth 467m

13:21 23:21 2210 LDSP

P190 made for SP 910-2200. Line Ok

Acquisition remark 
Shooting on Run-in.



Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
1331880 -  1729880 -  17298501  
13321730 -  22101730 -  22104812  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
5331880 -  1729880 -  17298504  
53321730 -  22101730 -  22104815  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL6135-136Spiking AF TracesAFSpiking AF trace(s)
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6130Spiking AF TracesAFSpiking AF trace(s)
ALLALL6133Spiking AF TracesAFSpiking AF trace(s)
ALLALL4230Spiking AF TracesAFSpiking AF trace(s)
ALLALL3305Spiking AF TracesAFSpiking AF trace(s)
ALLALL3309Spiking AF TracesAFSpiking AF trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL2161Noisy Trace(s)AFNoisy trace(s)
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8258Noisy Trace(s)AFNoisy trace(s)
ALLALL8268Noisy Trace(s)AFNoisy trace(s)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
ALLALL3296Noisy Trace(s)AFNoisy trace(s)
ALLALL3297Noisy Trace(s)AFNoisy trace(s)
12331233ALLALLIncomplete external headerAFBlock TRIGUN missing
13331333ALLALLIncomplete external headerAFBlock TRIGUN missing
15821582ALLALLIncomplete external headerAFBlock TRIGUN missing
19311931ALLALLIncomplete 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
ALLALL8292Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
1302-13031302-1303ALLALLSource depth out of specAFTD Source-depth for gun position 4-2 below 8.0 meter (value is: 8.0)

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
890890ALLALLNoise RecordAFSOL Noise Record
910910ALLALLRun-in Sp.AFFirst Run-in Sp.
10861086ALLALLBOLAFFirst Production SP.
22002200ALLALLEOLAFLast Production Sp.



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: 0037, Line name: GAP07B1296P037, Seismic datatype(s): AF - Locked date: 12-Apr-2007 20:59:10
GENERATED Thursday, April 12, 2007 9:00:54 PM GMT+00:00