ACQUISITION REPORT

Locked date: 18-Apr-2007 18:00:21


Sequence: 0069, Line name: GAP07B1696P069, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1696P069
Preplot Line Name1696
Direction197.0°
Chargeable Line Length16125.0m
SOL Time (utc)17:49:28 17-Apr-2007
EOL Time (utc)19:40:32 17-Apr-2007

Attributes
Wind Speed / Direction30.0 / NE[knots]
Swell Height / Direction3.0 / NE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.874.7[knots]
Water Depth1875.0595.0[meters]
Feather Angle-7.7-2.6[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise7.185.81[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)1986 - 1957 1986 - 1957 17:45:42 - 17:49:21 
FSP Start of Line1956 1956 17:49:28 17-Apr-2007 
MSP(midnight sp)   
LSP End of Line760 760 19:40:32 17-Apr-2007
EOL Dummy Record(s)759 - 754 759 - 754 20:25:26 - 20:26:07 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1956-10971956 - 109717:49:29 - 19:40:33Prime16ValidProduction Shots
1096-07601096 - 76019:40:40 - 20:25:18Unknown16UnknownShooting on run out

Positioning remark 
P190 made for SP 1956-760. Line Good

Acquisition remark 
Cable 7 birds 5-11 set to 8.5m for more depth control.
Cable 5 birds 14-17 set to 8.5m to help with depth control.
Random intermittent breakout d/t sea state and cable depths unstable.
Shooting on run-out.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13971986 -  11371986 -  11378502  
13981136 -  7541136 -  7543833  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53971986 -  11371986 -  11378505  
53981136 -  7541136 -  7543836  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
1095-10961095-1096ALLALLGun disabledAFGun . New source volume cu.inch.
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL7152Spiking AF TracesAFSpiking AF trace(s)
ALLALL4230Spiking 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
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
14071407ALLALLIncomplete external headerAFBlock TRIGUN missing
13991399ALLALLIncomplete external headerAFBlock TRIGUN missing
13221322ALLALLIncomplete external headerAFBlock TRIGUN missing
12501250ALLALLIncomplete external headerAFBlock TRIGUN missing

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
19841984ALLALLNoise RecordAFSOL Noise Record
19561956ALLALLSOLAFFirst Production Shot Point
10971097ALLALLEOLAFLast Production Shot Point
10951095ALLALLNoise RecordAFEOL Noise Record
760760ALLALLLSPAFShooting on run out



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: 0069, Line name: GAP07B1696P069, Seismic datatype(s): AF - Locked date: 18-Apr-2007 18:00:21
GENERATED Wednesday, April 18, 2007 6:00:54 PM GMT+00:00