ACQUISITION REPORT

Locked date: 10-Apr-2007 15:09:19


Sequence: 0026, Line name: GAP07B1504P026, Seismic datatype(s): AF


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

Sequence
Line NameGAP07B1504P026
Preplot Line Name1504
Direction197.0°
Chargeable Line Length17325.0m
SOL Time (utc)11:01:08 09-Apr-2007
EOL Time (utc)12:56:31 09-Apr-2007

Attributes
Wind Speed / Direction4.0 / NE[knots]
Swell Height / Direction1.0 / N[meters]
Propeller Speed125[avg rpm]
Propeller Pitch65[avg %]

  SOL EOL 
Bottom Speed4.94.8[knots]
Water Depth994.0408.0[meters]
Feather Angle-5.21.6[deg]
Sources Volume s1,s2 ..3147, 31473147, 3147[cu inch]
Background Noise4.760.0[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)1993 - 1964 1993 - 1964 10:57:28 - 11:01:01 
FSP Start of Line1963 1963 11:01:08 09-Apr-2007 
MSP(midnight sp)   
LSP End of Line660 660 12:56:31 09-Apr-2007
EOL Dummy Record(s)659 - 659 659 - 659 13:45:02 - 13:45:02 
EOL Noise Record(s)   

Line-segments 
SPs Files Times [utc] Type No. CMPs Status Remark
1963-10401963 - 104011:01:08 - 12:56:31Prime16Valid 
1039-06601039 - 66012:56:39 - 13:44:54Unknown16UnknownShooting on Run-out

Positioning remark 
10:57 20:57 1993 FDSP

11:01 21:01 1963 FPPSP / SOL
DC 26m F/A 5.2E Depth 1017m

12:43 22:43 1147 LPPSP

12:56 22:56 1040 LFFSP - Shooting on runout at clients request. DC -15m F/A 1.6W Depth 411m

13:44 23:44 660 LSP/EOL - Shooting in turn at client's request.
13:46 23:46 650 LDSP
P190 Made for SP 1963-660. Line Ok



Acquisition remark 
Sp. 1991 ........... SOL Noise record.
Sp. 1963 ........... BOL/FSP. @ 11:01
Sp. 1040 ........... EOL/LSP. @ 12:56
SP. 1039-660.... Shooting on Run-out
No EOL Noise record d/t turning.


Tape-List
 
Stream AF 
Reel Shots Files No. shots Deck Missing Shots Remark
13061993 -  19371993 -  1937572 Device timed out. No EEOF.
13071936 -  10681936 -  10688693  
13081067 -  6591067 -  6594091  

Stream AF_copy 
Reel Shots Files No. shots Deck Missing Shots Remark
53061993 -  19181993 -  1918765  
53071917 -  10681917 -  10688506  
53081067 -  6591067 -  6594094  


Annotations
 
NTBP 
Shot(s) File(s) Streamer No(s) Trace(s) Type Seismic datatype Remark
ALLALL749Noisy Trace(s)AFNoisy trace(s)
ALLALL698Noisy Trace(s)AFNoisy trace(s)
ALLALL6133Noisy Trace(s)AFNoisy trace(s)
ALLALL6159Dead trace(s)AFAF traces dead
ALLALL4190Dead trace(s)AFAF traces dead
ALLALL8212Noisy Trace(s)AFNoisy trace(s)
ALLALL8213Noisy Trace(s)AFNoisy trace(s)
ALLALL4222Noisy Trace(s)AFNoisy trace(s)
ALLALL4223Noisy Trace(s)AFNoisy trace(s)
ALLALL8271Noisy Trace(s)AFNoisy trace(s)
ALLALL3296Noisy Trace(s)AFNoisy trace(s)
1936-19341936-1934ALLALLMissing FilesAFFiles not recorded by recording system
1935-19361935-1936ALLALLMissing FilesAFFiles not recorded by recording system
1935-19301935-1930ALLALLMissing FilesAFFiles not recorded by recording system
1931-19351931-1935ALLALLMissing FilesAFFiles not recorded by recording system
1931-19291931-1929ALLALLMissing FilesAFFiles not recorded by recording system
1930-19341930-1934ALLALLMissing FilesAFFiles not recorded by recording system
1929-19301929-1930ALLALLMissing FilesAFFiles not recorded by recording system
15221522ALLALLIncomplete external headerAFBlock TRIGUN missing
14541454ALLALLIncomplete external headerAFBlock TRIGUN missing
ALLALL874Noisy Trace(s)AFNoisy trace(s)
ALLALL1106Noisy Trace(s)AFNoisy trace(s)
ALLALL1107Noisy Trace(s)AFNoisy trace(s)
ALLALL6128Spiking AF TracesAFSpiking AF trace(s)
ALLALL6130Spiking AF TracesAFSpiking AF trace(s)
ALLALL6131Spiking AF TracesAFSpiking AF trace(s)
ALLALL6135Spiking AF TracesAFSpiking AF trace(s)
ALLALL2161Noisy Trace(s)AFNoisy trace(s)
ALLALL5271Spiking AF TracesAFSpiking AF trace(s)
ALLALL3297Noisy Trace(s)AFNoisy trace(s)
ALLALL3305Spiking AF TracesAFSpiking AF trace(s)
ALLALL3309Spiking AF TracesAFSpiking AF 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
18631863ALLALLGun timing errorAFTD Gun 1-1 error (ms) : -1.8
18611861ALLALLGun timing errorAFTD Gun 1-1 error (ms) : -1.8
18591859ALLALLGun timing errorAFTD Gun 1-1 error (ms) : -1.3
15011501ALLALLGun timing errorAFTD Gun 3-2 error (ms) : 1.4
ALLALL8292Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces
ALLALL6319Weak Trace(s)AFTrace amplitude visibly lower than adjacent traces



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: 0026, Line name: GAP07B1504P026, Seismic datatype(s): AF - Locked date: 10-Apr-2007 15:09:19
GENERATED Tuesday, April 10, 2007 3:10:03 PM GMT+00:00