ACQUISITION REPORT

Locked date: 18-Apr-2007 18:00:21


Sequence: 0068, Line name: GAP07B2176P068, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B2176P068
Preplot Line Name2176
Direction17.0°
Chargeable Line Length17025.0m
SOL Time (utc)13:15:13 17-Apr-2007
EOL Time (utc)15:23:27 17-Apr-2007

Attributes
Wind Speed / Direction30.0 / NE[knots]
Swell Height / Direction2.5 / NE[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.24.3[knots]
Water Depth0.02430.0[meters]
Feather Angle5.43.1[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise11.1615.76[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)1085 - 1114 1085 - 1114 12:35:22 - 12:40:29 
FSP Start of Line1115 1115 13:15:13 17-Apr-2007 
MSP(midnight sp)   
LSP End of Line2252 2252 15:23:27 17-Apr-2007
EOL Dummy Record(s)2253 - 2262 2253 - 2262 15:23:36 - 15:24:55 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1115-13441115 - 134412:40:40 - 13:15:05Unknown16UnknownShooting on run in
1345-22521345 - 225213:15:14 - 15:23:28Prime16ValidProduction Shotpoints

Positioning remark 

DO NOT PROCESS LINE. Compass & Depth data out of spec.

P190 made for SP 1115-2252,



Acquisition remark 
DO NOT PROCESS

Shooting on Run-in
SOL Noise, Bend in cables.
Cable depths slightly unstable due to strong currents sea conditions.
SP 1765 Cable 7 birds 5-11 set to 8.5m d/t unstable depths. Cable going shallow doing Mexican wave along cable.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13951085 -  19341085 -  19348503 DO NOT PROCESS
13961935 -  22621935 -  22623281 DO NOT PROCESS

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53951085 -  19341085 -  19348506 DO NOT PROCESS
53961935 -  22621935 -  22623284 DO NOT PROCESS


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Spiking AF TracesAFSpiking AF trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Spiking AF TracesAFSpiking AF trace(s)
ALLALL8212Noisy Trace(s)AFNoisy trace(s)
ALLALL8213Noisy Trace(s)AFNoisy trace(s)
ALLALL4230Spiking AF TracesAFSpiking AF trace(s)
ALLALL8271Noisy Trace(s)AFNoisy 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
ALLALL6289Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL8319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
14681468ALLALLIncomplete external headerAFBlock TRIGUN missing

Comments 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
10881088ALLALLNoise RecordAFSOL Noise Record
11151115ALLALLRun-in AFFirst Run-in Sp.
13451345ALLALLBOLAFFirst Production Sp.
22522252ALLALLEOLAFLast production SP
22552255ALLALLNoise 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: 0068, Line name: GAP07B2176P068, Seismic datatype(s): AF - Locked date: 18-Apr-2007 18:00:21
GENERATED Wednesday, April 18, 2007 6:01:07 PM GMT+00:00