ACQUISITION REPORT

Locked date: 10-Apr-2007 03:08:25


Sequence: 0014, Line name: GAP07B1408P014, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1408P014
Preplot Line Name1408
Direction197.0°
Chargeable Line Length20268.75m
SOL Time (utc)04:14:17 07-Apr-2007
EOL Time (utc)06:28:36 07-Apr-2007

Attributes
Wind Speed / Direction4.0 / S[knots]
Swell Height / Direction0.5 / S[meters]
Propeller Speed126[avg rpm]
Propeller Pitch73[avg %]

  SOL EOL 
Bottom Speed4.844.5[knots]
Water Depth665.2254.0[meters]
Feather Angle2.74.2[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise6.130.0[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)2122 - 2093 2122 - 2093 04:10:14 - 04:14:10 
FSP Start of Line2092 2092 04:14:17 07-Apr-2007 
MSP(midnight sp)   
LSP End of Line640 640 06:28:36 07-Apr-2007
EOL Dummy Record(s)639 - 639 639 - 639 07:21:44 - 07:21:44 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
2092-10122092 - 101204:14:18 - 06:28:37Prime16Valid 
1011-06401011 - 64006:28:45 - 07:21:31Unknown16UnknownShooting on Run-out

Positioning remark 
4:10 14:10 2122 FDSP

4:11 14:11 Second helicopter on deck. OMS crew change.
4:14 14:14 2092 SOL/First Preplot SP
DC -20m F/A 2.7W Depth 703m

4:20 14:20 Helicopter departed.

6:14 16:14 1119 Last Preplot SP

6:28 16:28 1012 Last runout SP for preplot line
DC -15m F/A 4.2W Depth 275m

6:29 16:29 1002 First turn SP - shooting in turn at client's request
7:21 17:21 640 EOL/LSP

7:23 17:23 630 LDSP


Acquisition remark 
SP. 2122 ................ FDSP.
SP. 2120 ................ BOL Noise Record.
SP. 2092 ................ SOL @ 04:14.
SP. 1012 ................ EOL @ 06:28
No EOL Noise Record.
SP. 1011 - 640 ............... Shooting on Run Out.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
12792122 -  12732122 -  12738502  
12801272 -  6391272 -  6396343  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
52792122 -  12732122 -  12738505  
52801272 -  6391272 -  6396346  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL1106Noisy Trace(s)AFNoisy trace(s)
ALLALL1107Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
18561856ALLALLIncomplete external headerAFBlock TRIGUN missing
17721772ALLALLIncomplete external headerAFBlock TRIGUN missing
17531753ALLALLIncomplete external headerAFBlock TRIGUN missing
17141714ALLALLIncomplete external headerAFBlock TRIGUN missing
16881688ALLALLIncomplete external headerAFBlock TRIGUN missing
14411441ALLALLIncomplete external headerAFBlock TRIGUN missing
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL282Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6130Spiking AF TracesAFSpiking AF trace(s)
ALLALL6131Spiking AF TracesAFSpiking AF trace(s)
ALLALL6133Noisy Trace(s)AFNoisy trace(s)
ALLALL6133Spiking AF TracesAFSpiking AF trace(s)
ALLALL6135Spiking 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
ALLALL8319Weak 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
ALLALLALLALLNoise RecordAFSOL 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: 0014, Line name: GAP07B1408P014, Seismic datatype(s): AF - Locked date: 10-Apr-2007 03:08:25
GENERATED Tuesday, April 10, 2007 3:11:18 AM GMT+00:00