Global Agency of Geosciences Experts

03-03b Seismic Data Processing part 2

Objectives

To teach the fundamentals of seismic reflection and processing technology. Principles of seismic data processing, velocity analysis and stacking and migration.

Who should attend

Profesionnals with a Scientific background.

Prerequisites

Background in Geosciences, petroleum geology or basic Petroleum Engineer knowledge

Duration

5 Session

Languages
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1
Session

Fundamentals of seismic reflection

Principles of seismic methods  Propagation in a stratified medium  The shot point domain Equation of direct waves, refracted waves and  reflected waves in the (X,T) plane Diffracted waves Anatomy of a shot point Exercises

2
Session

Size of data and processing technology

Size of data: a 3-D example  Computation complexity  Conventional and modern processing  Key components of data processing Convolutional model of the Earth Geological models of the earth  Genesis of the seismic trace Exercises

3
Session

Principles of seismic data processing

General expression of the seismic trace Objectives of the processing Estimation of the reflectivity log Standard processing sequence Deconvolution Purpose of deconvolution  Spiking deconvolution  Predictive deconvolution Results of deconvolution Exercises

4
Session

Velocity analysis and stacking

Seismic velocity in data processing  NMO correction Velocity analysis in practice Seismic velocities derived from processing  Inaccuracy of the stack section Exercises

5
Session

Seismic imaging by migration

Migration principles  Effects of migration Criteria of migration type selection  Post-stack migration Pre-stack migration  Depth migration Exercises Quizz

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