ACQUISITION REPORT

Locked date: 12-Apr-2007 21:55:35


Sequence: 0042, Line name: GAP07B1920P042, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1920P042
Preplot Line Name1920
Direction17.0°
Chargeable Line Length38306.25m
SOL Time (utc)04:43:48 12-Apr-2007
EOL Time (utc)09:35:13 12-Apr-2007

Attributes
Wind Speed / Direction10.0 / SW[knots]
Swell Height / Direction1.5 / SE[meters]
Propeller Speed126[avg rpm]
Propeller Pitch65[avg %]

  SOL EOL 
Bottom Speed4.84.9[knots]
Water Depth1300.02580.0[meters]
Feather Angle-3.01.2[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise10.5417.5[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)1017 - 1039 1018 - 1040 04:40:34 - 04:43:27 
FSP Start of Line1040 1041 04:43:48 12-Apr-2007 
MSP(midnight sp)   
LSP End of Line3312 3313 09:35:13 12-Apr-2007
EOL Dummy Record(s)3313 - 3322 3314 - 3323 09:35:21 - 09:36:28 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1040-12691041 - 127004:43:35 - 05:12:41Unknown16UnknownShooting on Run-in
1270-33121271 - 331305:12:49 - 09:35:14Prime16ValidProduction

Positioning remark 
4:39 14:39 1010 FDSP

4:43 14:43 1040 FSP/SOL Shooting on runin at client's request

5:12 15:12 1270 FPPSP
DC -3m F/A 3.0W Depth 1286m

9:22 19:22 3205 LPPSP

9:35 19:35 3312 LFFSP / EOL
DC 12m F/A 1.2E Depth 2580m

9:36 19:36 3322 LDSP
Line ok

Acquisition remark 
Shotpoints Number and File out of sync. by (1).
Shooting on Run-in.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13381017 -  18661018 -  18678501 Shotpoint and File Number out of sync.
13391867 -  27161868 -  27178502 Shotpoint and File Number out of sync.
13402717 -  33222718 -  33236063 Shotpoint and File Number out of sync.

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53381017 -  18661018 -  18678504  Shotpoint & File out of sync.
53391867 -  27161868 -  27178505  Shotpoint & File out of sync.
53402717 -  33222718 -  33236066  Shotpoint & File out of sync.


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)
ALLALL698Noisy Trace(s)AFNoisy trace(s)
ALLALL8118Noisy Trace(s)AFNoisy trace(s)
ALLALL2161Noisy Trace(s)AFNoisy trace(s)
ALLALL4190Spiking AF TracesAFSpiking AF trace(s)
ALLALL8258Noisy Trace(s)AFNoisy trace(s)
ALLALL3296Noisy Trace(s)AFNoisy trace(s)
ALLALL3297Noisy Trace(s)AFNoisy trace(s)
ALLALL3305Spiking AF TracesAFSpiking AF trace(s)
ALLALL3309Spiking AF TracesAFSpiking AF trace(s)
2304230Spiking AF TracesAFSpiking AF trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
17831784ALLALLIncomplete external headerAFBlock TRIGUN missing
19161917ALLALLIncomplete external headerAFBlock TRIGUN missing
22422243ALLALLIncomplete external headerAFBlock TRIACQ missing
22432244ALLALLIncomplete external headerAFBlock TRIACQ missing
22442245ALLALLIncomplete external headerAFBlock TRIACQ missing
22452246ALLALLIncomplete external headerAFBlock TRIACQ 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
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
10221023ALLALLNoise RecordAFSOL Noise Record
10401041ALLALLRun-in SP.AFFirst Run-in SP.
12701271ALLALLBOLAFFirst Production SP.
33123313ALLALLEOLAFLast Production SP.
33143315ALLALLNoise 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: 0042, Line name: GAP07B1920P042, Seismic datatype(s): AF - Locked date: 12-Apr-2007 21:55:35
GENERATED Thursday, April 12, 2007 9:56:09 PM GMT+00:00