Module List

ZebraSeis™

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Process Flow Module List – February 2016

AmpMod

Amplitude modification

Anisotropy

Anisotropy calculations from Walkaway VSP data. 

ArealInterpolation

Spatial interpolation of wavelets. 

AVOsynth

To generate angle dependent reflection responses computed from well logs.

CombineTauP

To estimate scalar wavefields from Walkaway VSP vectorial wavefields in TauP space. Can be used in conjunction with module TauP2D.

CompSheet

Calculation of vertical times and velocities below seismic datum. Produces time-depth and velocity curves and a computation sheet and outputs a .sgy file with vertical times below SRD set in headers.

Correlate

Correlation of seismic data (carried out in the time domain) from 1 input file containing both operator and operand traces in a multi-trace- per-record file. Primarily designed for correlation of Vibroseis data. 

CorrelConv

Correlation & convolution of seismic data (carried out in the time domain) from 2 input files (operator & operand).

Decon

Deterministic and Statistical deconvolution.

DepthTo2WT

Depth to time conversion of imaged data using a velocity model from DIVINE.

FileAdd

Adds the data in all the 'Add' input files to the data in the 'Primary' input file. Amplitudes are added sample-by-sample.

FileSubtract

Subtracts the data in the 'Subtract' input file from the data in the 'Primary' input file. Amplitudes are subtracted sample-by-sample.

Filter

To apply a single filter or time variant filters of type Ormsby, Butterworth, Ricker Wavelet or Phase Rotation

FKfilter

To apply an FK Fan Filter or Wavenumber Filter.

GeogRot

Either transforms 3-component data recorded using non-gimballed geophones to the coordinate system:- Vertical, Horizontal East and Horizontal North or sets the calculated VSP plane rotation angle in file header without transforming the data.

HeadSet

Interrogation and setting of SEGY file headers interactively or in batch run.

Hodogram

To display hodograms of 3-component data.

Inversion

VSP Trace Inversion of Upgoing Wavefield VSP traces or the output from module SparseSpike. 

MedianTracker

Median Dip Filter.

Merge

Appends chosen traces from up to four input files to a single output file.

ModelBuilder1D

Builds a 1D anisotropic velocity model from walkaway data to control the time migration program TmigAn.

MultiTmig

Time migration of any 2D VSP dataset based on Time-Depth pairs from headers or ascii model and including anisotropy. The four propagation mode options cover all mode-conversion eventualities. The options also include Walkaway downwave migration.

Mute

Muting of selected traces or front/rear blanking.

NMO

To remove or apply Normal MoveOut to VSP traces using a velocity profile calculated from a text file of depth-time pairs, a single user- supplied velocity or trace header values.

Orientate

Orientation of 3-component data.

ParametricFilt

Parametric wavefield separation.

PredictUp

Prediction of events above the shallowest VSP level.

Projection2D

Projection onto selected 2D plane and interpolation of traces.

PSfromTauP

Combines the vertical and horizontal component wavefields of Walkaway VSP data (in Tau-P space) into scalar P and S-wavefields.

Q_estimation

Estimates Q from spectral-gradient differences.

ReMap

To stretch and squeeze traces according to some geophysical requirement e.g. for time-to-depth conversion via a complex earth model.

ReSample

To re-sample seismic data.

ReSampLinear

Re-samples seismic data and removes start delay header values (where possible use ReSample in preference).

SelSort

Trace selection and sorting.

SparseSpike

Generation of a sparse spike series from Upgoing Wavefield VSP data. Output can be input to module Inversion.

SpecAmpDenoise

Noise suppression based on spectral amplitudes.

SpectralAnalysis

Spectral Analysis of surface seismic/VSP data.

Stacker

Applies a median or mean stack to traces in a single file.

SurfSynthetic

Generation of  all Synthetic Seismogram responses from a Reflection Coefficient series.

TauP2D

Forward and reverse Tau-P transform, Tau-P trace interpolation.

TmigAn

Time migration using a model from module ModelBuilder1D.

TraceEdit

Automates the identification and flagging of bad data based on statistical properties of nearby traces.

TraceIntegrate

Trace integration.

Transpose

Transposition of VSP traces.

Tshift

Time shift data based on trace headers or constant values.

VSPmapping

Bin stack or VSP CDP transform. Maps a VSP data set from “NMO space” to its true spatial (XZ) locations.

VSPnmoFwd

Corrects offset source data for NMO due to geometry (maps data from recorded time to 'NMO space') using a raypath text file generated by DIVINE.

VSPnmoRev

Maps VSP data from "NMO space' back to recorded time.

VSPsynthetic

Generation of a synthetic VSP dataset from a reflection coefficient series and a text file containing vertical depths and times below SRD.

WaveMatch

Statistically based wavelet matching of VSP to Surface Seismic, Synthetic Seismogram to Surface Seismic data or vice versa.

WaveModeSep

Wavemode filter creating P and S wave files from the vertical and Inline horizontal components.

WellDeviations

Correction of geophone, borehole log and formation top depths to the vertical using deviation data. Optionally outputs a .sgy file with vertical depths set in headers, a LAS format log file with a vertical depth column and a formation tops file formatted for use in ZebraSeis.