ACQUISITION REPORT

Locked date: 16-Apr-2007 18:00:18


Sequence: 0061, Line name: GAP07B1664P061, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1664P061
Preplot Line Name1664
Direction197.0°
Chargeable Line Length16312.5m
SOL Time (utc)21:13:06 15-Apr-2007
EOL Time (utc)23:48:24 15-Apr-2007

Attributes
Wind Speed / Direction12.0 / SSW[knots]
Swell Height / Direction2.0 / S[meters]
Propeller Speed [avg rpm]
Propeller Pitch [avg %]

  SOL EOL 
Bottom Speed4.74.8[knots]
Water Depth1770.00.0[meters]
Feather Angle-3.35.1[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise0.05.45[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)4224 - 1958 4224 - 1958 23:50:04 - 21:12:59 
FSP Start of Line1957 1957 21:13:06 15-Apr-2007 
MSP(midnight sp)   
LSP End of Line722 722 23:48:24 15-Apr-2007
EOL Dummy Record(s)721 - 712 721 - 712 23:48:37 - 23:49:55 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1957-10881957 - 108821:13:07 - 23:01:25Prime16ValidProduction SP
1087-07221087 - 72223:01:33 - 23:48:28Unknown16UnknownShooting on run out

Positioning remark 
Shot as line seq 057, but re-sequenced to 061
Line ok

Acquisition remark 
Sequencies 57-60 not used.

Line name on SEG-D tape headers is incorrect. Should be GAP07B1664P061. Not GAP07B1664P057.

SP 1445-1370 cable 7 birds 5-6 (chls 38-105) going shallow d/t wing wash.
Shooting on run out.




Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13761987 -  11381987 -  11388503  
13771137 -  7221137 -  7224351 LSP 722

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53761987 -  11381987 -  11388506  
53771137 -  7221137 -  7224354 LSP 722


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
1087-10851087-1085ALLALLSourceAFGuns disabled for noise test
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
13711371ALLALLIncomplete external headerAFBlock TRIGUN missing
13531353ALLALLGun timing errorAFTD Gun 3-2 error (ms) : 1.3
13091309ALLALLIncomplete external headerAFBlock TRIGUN missing
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
19851985ALLALLNoise RecordAFSOL Noise Record
19571957ALLALLBOLAFFirst production SP
10881088ALLALLEOLAFLast production SP
10871087ALLALLNoise 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: 0061, Line name: GAP07B1664P061, Seismic datatype(s): AF - Locked date: 16-Apr-2007 18:00:18
GENERATED Monday, April 16, 2007 6:00:46 PM GMT+00:00