This course covers the basic algorithms of poststack migration then discusses issues related to migration such as topography, frequency content, or parameters. It presents the basic methods of migration in a simple manner and uses diagrams and figures to illustrate principles. The concepts are presented in an intuitive graphical manner without detailed mathematics that can obscure the fundamental concepts. Some mathematics is included to illustrate the simplicity of the algorithms. Numerous geometrical constructions are included in the notes to illustrate the simplicity of migration algorithms. Laboratory exercises will evaluate modelling and migration programs.
1.Zero offset seismic modelling is introduced first because of its simplicity as it represents a forward process. These modelling concepts will later become part of the migration process itself.
2. A review of the Fourier Transform, aliasing, interpolation, velocity concepts, and the difference between time and depth migration are then presented.
3. The various migration algorithms are introduced as the inverse process of modelling. Practical methods for evaluating the migration algorithms are presented. Various topics that affect the migration qualities are examined, especially the problems associated with rugged topography.
Who Should Attend: The course is designed for all geophysicists, independent of their background. Each participant will have an understanding of the basic algorithms and should be able to communicate freely between processing specialists and seismic interpreters. Those with computer skills will be able to write their own migration programs.