Tutorials

The tutorial is aimed at absolute beginners in RadExPro software who want to quickly get started. It is a basic guideline describing the concept of RadExPro processing projects and giving a step–by–step instruction of how you can create a project and load seismic data into it (which is the very first step in RadExPro before you start any seismic processing).

This tutorial is for those who aim to expand the functionality of RadExPro by introducing their own algorithms in Python via the Python Proxy module. The tutorial contains several example implementations of seismic processing algorithms in Python Proxy, including automatic gain control, deghosting, semblance attribute computation and geophone-to-DAS conversion.

The tutorial assumes that you are familiar with the fundamentals of Python processing language. Before starting the tutorial, it is recommended that you read the section related to the Python Proxy in the RadExPro manual. Note that for Python Proxy to function correctly it is preferred that you install Python on your system before installing RadExPro .

The tutorial is accompanied by a project where each of the presented algorithms can be tested on seismic data

The tutorial describes a conventional workflow for high–resolution offshore data processing in RadExPro, including data load, geometry assignment, geometry QC, preprocessing, interactive velocity analysis, stacking, post–stack Kirchhoff migration and printing the results. It can be used as a basic guideline for the real–life processing tasks.

Here we demonstrate how to compute typical land seismic QC attributes (amplitude, frequency, signal-to-noise ratio) in RadExPro software. The second part of the tutorial is dedicated to interactive analysis of the attribute maps using Interactive QC module.

The tutorial is addressed to those who use RadExPro for seismic QC—the process of map generation (including survey map, CMP fold and offset sampling maps, SNR map) is described in detail. The maps are created using the CrossPlot module of the software. The demo project contains a specially prepared 3D dataset: with trace heades only (data was truncated to 1 sample per trace to keep the size reasonable), containg geometry and pre–calculated values of fold, offset sampling and SNR.

In this tutorial, we demonstrate how a novice user can process data of near-surface seismic reflection (CDP) survey using RadExPro software. We will pass through all standard stages of the basic CDP data processing, from geometry input until stacking and time-to-depth conversion, the so-called minimum processing graph. As an example, we use a seismic reflection SH-wave profile. If your data in on P-waves, you can use the same processing graph, just skip the ‘Subtraction of “left” and “right” shots’ part of this tutorial. We assume that the user is already familiar with the theory of the CDP method and the basic technology of the reflection seismic processing.

The tutorial covers all standard stages of basic VSP processing, from data input to building a velocity model, tying VSP data to seismic survey data and printing out the results. Creation of a new RadExPro processing project, data load, assigning geometry, picking of first arrivals of the P– and S–waves, component orientation, estimation of the deconvolution parameters, reflected wave field separation, building of velocity model, corridor stack trace, VSP migration and VSP–CMP transformation, tying of VSP data to seismics are discussed.

The tutorial describes interpretation of seismic refraction data using the Plus-Minus method in the RadExPro Easy Refraction module. All steps are discussed: data loading, geometry assignment using the new intuitive Near–Surface Geometry Input module, first break picking, assigning travel–time segments to different layers and, finally, inversion of the travel times and building a layered velocity model of the subsurface.

The tutorial is addressed to those who want to learn how to process surface wave data in the RadExPro using the MASW method. All processing stages, including the data loading, geometry assignment using our brand–new interactive module, extraction of dispersion curves, joint inversion of the fundamental and higher modes, and building of the resulting Vs cross–section are described.