ACQUISITION REPORT

Locked date: 08-Apr-2007 03:03:58


Sequence: 0015, Line name: GAP07B1120P015, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1120P015
Preplot Line Name1120
Direction17.0°
Chargeable Line Length21900.0m
SOL Time (utc)08:48:23 07-Apr-2007
EOL Time (utc)11:14:14 07-Apr-2007

Attributes
Wind Speed / Direction8.0 / SSW[knots]
Swell Height / Direction2.0 / NNE[meters]
Propeller Speed126[avg rpm]
Propeller Pitch70[avg %]

  SOL EOL 
Bottom Speed4.74.7[knots]
Water Depth174.0329.0[meters]
Feather Angle3.00.9[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise0.05.98[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)755 - 803 755 - 803 08:11:56 - 08:17:44 
FSP Start of Line804 804 08:48:23 07-Apr-2007 
MSP(midnight sp)  00:00:00 00-???-00
LSP End of Line2201 2201 11:14:14 07-Apr-2007
EOL Dummy Record(s)2202 - 2211 2202 - 2211 11:14:23 - 11:15:32 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
0804-1033804 - 103308:17:52 - 08:46:44Unknown16UnknownExtra shots on runin on client's request
1034-22011034 - 220108:46:52 - 11:14:15Prime16Valid 

Positioning remark 
8:14 18:14 774 FDSP

8:17 18:17 804 SOL/First SP- Shooting on runin at client's request
8:46 18:46 1034 First Preplot SP
DC 21m F/A 3.0E Depth 139m

11:00 21:00 2094 Last Preplot SP

11:14 21:14 2201 EOL/Last SP
DC -24m F/A 0.9E Depth 328m

11:15 21:15 2211 LDSP


Acquisition remark 
No SOL Noise Test d/t shooting on turning
SP. 774 ................... FDSP.
SP. 804 - 1033 ...... Shooting on Run-in.
SP. 1034 ................ BOL @ 08:46
SP. 2201 ................ EOL @ 11:14
SP. 2203................. EOL Noise Record



Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
1281755 -  1604755 -  16048501  
12821605 -  22111605 -  22116072  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
5281755 -  1604755 -  16048504  
52821605 -  22111605 -  22116075  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6130Spiking AF TracesAFSpiking AF trace(s)
ALLALL6131Spiking AF TracesAFSpiking AF trace(s)
ALLALL6135Spiking AF TracesAFSpiking AF trace(s)
ALLALL330Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Noisy Trace(s)AFNoisy trace(s)
ALLALL1106Noisy Trace(s)AFNoisy trace(s)
ALLALL1107Noisy Trace(s)AFNoisy trace(s)
ALLALL6133Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
ALLALL3296Noisy Trace(s)AFNoisy trace(s)
ALLALL3297Noisy Trace(s)AFNoisy trace(s)
10881088ALLALLIncomplete external headerAFBlock TRIGUN missing
1089ALLALLMissing FileAFFile has not been recorded by recording system

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
12601260ALLALLIncomplete external headerAFBlock TRIGUN missing
14821482ALLALLIncomplete external headerAFBlock TRIGUN missing
19781978ALLALLIncomplete external headerAFBlock TRIGUN missing

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
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: 0015, Line name: GAP07B1120P015, Seismic datatype(s): AF - Locked date: 08-Apr-2007 03:03:58
GENERATED Sunday, April 8, 2007 3:06:01 AM GMT+00:00