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SoVRSegyTraceIdHeader Structure

SEGY trace identification header.

Namespace: OIV.VolumeViz.Readers
Assembly: OIV.VolumeViz (in OIV.VolumeViz.dll) Version: 10.12.3.0 (10.12.3.0)
Syntax
public struct SoVRSegyTraceIdHeader

The SoVRSegyTraceIdHeader type exposes the following members.

Methods
  NameDescription
Public methodEquals
Indicates whether this instance and a specified object are equal.
(Inherited from ValueType.)
Public methodGetHashCode
Returns the hash code for this instance.
(Inherited from ValueType.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodToString
Returns the fully qualified type name of this instance.
(Inherited from ValueType.)
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Properties
  NameDescription
Public propertyAfilf

Alias filter frequency if used.

Public propertyAfils

Alias filter slope.

Public propertyCdp

CDP ensemble number.

Public propertyCdpt

Trace number within CDP ensemble.

Public propertyCdpX

X coordinate of ensemble (CDP) position of this trace.

Public propertyCdpY

Y coordinate of ensemble (CDP) position of this trace.

Public propertyCorr

Correlated: 1 = No 2 = Yes.

Public propertyCounit

Coordinate units code: For previous four entries 1 = Length (meters or feet) 2 = Seconds of arc (In this case, the X values are longitude and the Y values are latitude.

Public propertyCrosslineNumber

Cross-line number, for 3D poststack data.

Public propertyDay

Day of year.

Public propertyStatic memberDefault
Default constructor.
Public propertyDelrt

Delay recording time, time in ms between initiation time of energy source and time when recording of data samples begins (for deep water work if recording does not start at zero time)

Public propertyDt

Sample interval; in micro-seconds.

Public propertyDtid

Device/Trace Identifier.

Public propertyDuse

Data use: 1 = Production 2 = Test.

Public propertyEp

Energy source point number.

Public propertyFldr

Field record number.

Public propertyGain

Gain type of field instruments code: 1 = Fixed 2 = Binary 3 = Floating point 4...N = optional use.

Public propertyGaps

Gap size (total number of groups dropped)

Public propertyGdel

Datum elevation at receiver group.

Public propertyGelev

Receiver group elevation from sea level (above sea level is positive)

Public propertyGrnlof

Geophone group number of last trace within original field record.

Public propertyGrnofr

Geophone group number of trace one within original field record.

Public propertyGrnors

Geophone group number of roll switch position one.

Public propertyGstat

Group static correction.

Public propertyGut

Uphole time at receiver group.

Public propertyGwdep

Water depth at receiver group.

Public propertyGx

X group coordinate.

Public propertyGy

Y group coordinate.

Public propertyHcf

High cut frequncy if used.

Public propertyHcs

High cut slope.

Public propertyHour

Hour of day (24 hour clock)

Public propertyIgc

Instrument gain constant.

Public propertyIgi

Instrument early or initial gain.

Public propertyInlineNumber

Inline-line number, for 3D poststack data.

Public propertyLaga

Lag time A, time in ms between end of 240- byte trace identification header and time break, positive if time break occurs after end of header.

Public propertyLagb

Lag time B, time in ms between the time break and the initiation time of the energy source.

Public propertyLcf

Low cut frequency if used.

Public propertyLcs

Low cut slope.

Public propertyMinute

Minute of hour.

Public propertyMute

Mute timeend.

Public propertyMuts

Mute timestart.

Public propertyNhs

Number of horizontally summed traces (see SoVRSegyFileHeader.SoVRSegyFileHeader)

Public propertyNofilf

Notch filter frequency if used.

Public propertyNofils

Notch filter slope.

Public propertyNs

Number of samples in this trace.

Public propertyNvs

Number of vertically summed traces (see OIV.VolumeViz.Readers.SoVRSegyFileHeader.vscode)

Public propertyOffset

Distance from source point to receiver group (negative if opposite to direction in which the line was shot)

Public propertyOtrav

Overtravel taper code: 1 = Down (or behind) 2 = Up (or ahead)

Public propertyScalco

Scale factor for next 4 entries with value plus or minus 10 to the power 0, 1, 2, 3, or 4 (if positive, multiply, if negative divide)

Public propertyScalel

Scale factor for previous 7 entries with value plus or minus 10 to the power 0, 1, 2, 3, or 4 (if positive, multiply, if negative divide)

Public propertySdel

Datum elevation at source.

Public propertySdepth

Source depth (positive)

Public propertySec

Second of minute.

Public propertySelev

Source elevation from sea level (above sea level is positive)

Public propertySfe

Sweep frequency at end.

Public propertySfs

Sweep frequency at start.

Public propertyShotPointNumber

Shotpoint number, for 2D poststack data.

Public propertyShotPointScale

Scalar to be applied to shotPointNumber to give the real value.

Public propertySlen

Sweep length in ms.

Public propertySstat

Source static correction.

Public propertyStae

Sweep trace length at end in ms.

Public propertyStas

Sweep trace length at start in ms.

Public propertyStyp

Sweep type code: 1 = Linear 2 = Cos-squared 3 = Other.

Public propertySut

Uphole time at source.

Public propertySwdep

Water depth at source.

Public propertySwevel

Subweathering velocity.

Public propertySx

X source coordinate.

Public propertySy

Y source coordinate.

Public propertyTatyp

Taper type: 1=linear, 2=cos^2, 3=other.

Public propertyTimbas

Time basis code: 1 = Local 2 = GMT 3 = Other 4 = UTC.

Public propertyTracf

Trace number within field record.

Public propertyTracl

Trace sequence number within line.

Public propertyTracr

Trace sequence number within reel.

Public propertyTransductionConstantM

Transduction Constant Mantissa.

Public propertyTransductionConstantP

Transduction Constant Power of ten.

Public propertyTransductionUnits

Transduction Units 0 = Unknown 1 = Pascal (Pa) 2 = Volts (v) 3 = Millivolts (mV) 4 = Amperes (A) 5 = Meters (m) 6 = Meters per second (m/s) 7 = Meters per second squared (m/s2) 8 = Newton (N) 9 = Watt (W)

Public propertyTrid

Trace identification code: 1 = Seismic data 2 = Dead 3 = Dummy 4 = Time break 5 = Uphole 6 = Sweep 7 = Timing 8 = Water break 9...N = optional use (N = 32,767)

Public propertyTrwf

Trace weighting factor, defined as 1/2^N volts for the least sigificant bit.

Public propertyTscale

Scalar to be applied to - sut, gut, sstat, gstat, tstat, laga, lagb, delrt, muts, mute - header info to get the true time value in milliseconds.

Public propertyTstat

Total static applied.

Public propertyTvmu

Trace value measurement unit 0 = Unknown 1 = Pascal (Pa) 2 = Volts (v) 3 = Millivolts (mV) 4 = Amperes (A) 5 = Meters (m) 6 = Meters per second (m/s) 7 = Meters per second squared (m/s2) 8 = Newton (N) 9 = Watt (W)

Public propertyUnass

Unassigned.

Public propertyWevel

Weathering velocity.

Public propertyYear

Year data recorded.

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Remarks

This class encapsulates the contents of a SEGY trace header (SEGY is a widely used format for storing seismic data). It is used to query this information from the SEGY file reader (see OIV.VolumeViz.Readers.SoVRSegyFileReader.GetSegyTraceHeader(System.Int32, OIV.VolumeViz.Readers.SoVRSegyTraceIdHeader@)). See also OIV.VolumeViz.Readers.SoVRSegyFileHeader.

See Also