ACQUISITION REPORT

Locked date: 08-Apr-2007 03:03:55


Sequence: 0003, Line name: GAP07B1024P003, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1024P003
Preplot Line Name1024
Direction17.0°
Chargeable Line Length22443.75m
SOL Time (utc)23:57:20 04-Apr-2007
EOL Time (utc)02:26:23 05-Apr-2007

Attributes
Wind Speed / Direction25.0 / SW[knots]
Swell Height / Direction3.0 / S[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.764.9[knots]
Water Depth180.0283.0[meters]
Feather Angle-2.9-8.6[deg]
Sources Volume s1,s2 ..3147, 31473157, 3147[cu inch]
Background Noise11.117.16[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)716 - 745 716 - 745 23:18:20 - 23:22:21 
FSP Start of Line746 746 23:57:20 04-Apr-2007 
MSP(midnight sp)1026 1026 23:59:56 04-Apr-2007
LSP End of Line2202 2202 02:26:23 05-Apr-2007
EOL Dummy Record(s)2203 - 2212 2203 - 2212 02:26:32 - 02:27:38 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
0746-1005746 - 100523:22:29 - 23:57:13Unknown16UnknownShooting on Run-in
1006-22021006 - 220223:57:21 - 02:26:24Prime16Valid 

Positioning remark 
Shooting on runin on client's request
P190 prepared for SP: 746-2202
Line Ok

Acquisition remark 
SP 720 : SOL Noise Test ( Noise value higher as streamer is in the bend )
SP 746-1005 : Shooting on Run-in
SP 1006 : First SP
SP 2202 : Last SP
SP 2205 : EOL Noise Test


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
1254716 -  1565716 -  15658501  
12551566 -  22121566 -  22126472  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
5254716 -  1565716 -  15658504  
52551566 -  22121566 -  22126475  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL121Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Noisy Trace(s)AFNoisy trace(s)
ALLALL6130Noisy Trace(s)AFNoisy trace(s)
ALLALL6131Noisy Trace(s)AFNoisy trace(s)
ALLALL6133Noisy Trace(s)AFNoisy trace(s)
ALLALL6135Noisy Trace(s)AFNoisy trace(s)
ALLALL3271Noisy Trace(s)AFNoisy trace(s)
ALLALL4222-223Noisy Trace(s)AFNoisy trace(s)
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL7194Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL3309Noisy Trace(s)AFNoisy trace(s)
ALLALL8319Dead trace(s)AFAF traces dead
127612768271Spiking AF TracesAFSpiking AF trace(s)
13401340ALLALLIncomplete external headerAFBlock TRIGUN missing
18141814ALLALLIncomplete external headerAFBlock TRIGUN missing

Warnings 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL3296-297Noisy Trace(s)AFNoisy trace(s)
ALLALL8224-225Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
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
ALLALL1274Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL8292Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
10381038ALLALLSource depth out of specAFTD Source-depth for gun position 4-2 below 8.0 meter (value is: 8.2)

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
720720ALLALLNoise RecordAFSOL Noise Record
22052205ALLALLNoise 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: 0003, Line name: GAP07B1024P003, Seismic datatype(s): AF - Locked date: 08-Apr-2007 03:03:55
GENERATED Sunday, April 8, 2007 3:05:06 AM GMT+00:00