ACQUISITION REPORT

Locked date: 11-Apr-2007 19:52:03


Sequence: 0031, Line name: GAP07B1248P031, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1248P031
Preplot Line Name1248
Direction17.0°
Chargeable Line Length21168.75m
SOL Time (utc)08:51:18 10-Apr-2007
EOL Time (utc)11:16:42 10-Apr-2007

Attributes
Wind Speed / Direction1.0 / VAR[knots]
Swell Height / Direction1.0 / SSW[meters]
Propeller Speed126[avg rpm]
Propeller Pitch60[avg %]

  SOL EOL 
Bottom Speed4.54.7[knots]
Water Depth237.0413.0[meters]
Feather Angle9.95.6[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise10.574.07[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)812 - 841 812 - 841 08:19:18 - 08:23:00 
FSP Start of Line842 842 08:51:18 10-Apr-2007 
MSP(midnight sp)  00:00:00 00-???-00
LSP End of Line2200 2200 11:16:42 10-Apr-2007
EOL Dummy Record(s)2201 - 2210 2201 - 2210 11:16:50 - 11:18:00 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
0842-1071842 - 107108:23:08 - 08:51:11Prime16ValidShooting on Run-in
1072-22001072 - 220008:51:19 - 11:16:42Prime16ValidSOL/EOL

Positioning remark 
8:19 18:19 812 FDSP

8:23 18:23 842 FSP/SOL Shooting on runin at client's request
8:51 18:51 1072 FPPSP
DC -12m F/A 9.9E Depth 238m

11:02 21:02 2093 LPPSP

11:16 21:16 2200 LFFSP/EOL - Shooting on runout on client's request DC -35m F/A 5.6E Depth 412m

11:17 21:17 2210 LDSP

P190 Made for SP 842-2200. Line Ok

Acquisition remark 
SP. 812 : FDSP
SP. 814 : SOL Noise test. High result d/t cables bend.
SP. 842 - 1071 : Shooting on Run-in
SP. 1072 : FSP @ 08:51 SOL
SP.2200 : LSP @ 11:16 EOL



Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
1318812 -  1661812 -  16618501  
13191662 -  17211662 -  1721602 Copied from copy tape d/t no eof mark
13201722 -  22101722 -  22104893  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
5318812 -  1661812 -  16618504  
53191662 -  17771662 -  17771165  
53201778 -  22101778 -  22104336  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL6130-131Spiking AF TracesAFSpiking AF trace(s)
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6135Spiking AF TracesAFSpiking AF trace(s)
ALLALL3305Spiking AF TracesAFSpiking AF trace(s)
ALLALL3309Spiking AF TracesAFSpiking AF trace(s)
ALLALL3296-297Noisy Trace(s)AFNoisy trace(s)
ALLALL4222-223Noisy Trace(s)AFNoisy trace(s)
ALLALL8212-213Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Noisy Trace(s)AFNoisy trace(s)
ALLALL6133Spiking AF TracesAFSpiking AF 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)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
12201220ALLALLIncomplete external headerAFBlock TRIGUN missing
13891389ALLALLIncomplete 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
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
842842ALLALLFirst Run-in SPAF 
10721072ALLALLBOLAFFirst 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: 0031, Line name: GAP07B1248P031, Seismic datatype(s): AF - Locked date: 11-Apr-2007 19:52:03
GENERATED Wednesday, April 11, 2007 7:52:23 PM GMT+00:00