Imagerie sismique

Imagerie sismique
Diplôme d'ingénieur de l'École et observatoire des sciences de la Terre (EOST)Parcours Diplôme d'ingénieur de l'EOST

ComposanteÉcole et observatoire des sciences de la Terre (EOST)

Description

Relation structure du sous-sol – image sismique – champ d'onde réfléchi
Décomposition du champ d'ondes réfléchi en diffractions, migration par méthodes intégrales.
Décomposition du champ d'ondes réfléchi en ondes planes, migration dans le domaine spectral.
Préservation des pendages lors du passage à déport nul, migration partielle avant sommation.
Variations verticales et latérales de la vitesse de propagation : migration temps et profondeur.
Equations d'ondes paraxiales, migration par méthodes de différences finies.
Notions sur la migration avant sommation.
Programmation d’algorithmes de migration.
Tying structure and seismic image through reflected wavefield. Diffractions and integral methods of migration. Plane waves and Fourier methods of migration. Normal and Dip Move Out. Time and depth migration. Paraxial wave equations and finite difference migrations. Introduction to prestack migration.

A la fin de ce cours, vous serez capable de :
Faire un stage dans une entreprise mettant en œuvre l’imagerie sismique pour acquérir la pratique des logiciels industriels de traitement. Poursuivre l’étude de méthodes avancées d’imagerie sismique pour travailler en R&D.
Apply to an internship in a seismic processing company to learn how to use various industrial softwares. Pursue further studies of advanced seismic imaging methods to join R&D services.

Compétences visées

Introduire les bases théoriques et algorithmiques des méthodes d'imagerie du sous-sol par sismique réflexion.

Understanding the theory and algorithms of the methods of seismic imaging of the earth using reflections.

 

School regulations

The curriculum includes three years of study: admissions, the organisation of studies, assessments, placements and vivas, graduation and international exchanges are all explained in the current school rules (pdf).

First and second year courses

First and second year courses

  • General modules: mechanics, geology, mathematics, IT, digital analysis, signal processing, inverse methods.
  • Geophysical methods: physics of the Earth, seismology, seismic modelling and imaging, geodesy, gravimetry, potential methods, geomagnetism, electromagnetism, rock physics and fracture, hydrology.
  • Practical work: geophysical measurements in the field (photo) and in the laboratory, geology field placements in the Alps.
  • Languages and economic and social sciences: English, modern language 2, economics, industrial property, management, sustainable development, ethics, quality, company health and safety
  • IT and research projects, shared with the first year of the master’s degree
  • Summer placements at a laboratory or company, with numerous opportunities abroad (international placement contact: Mike Heap)

Third year course

Students have a choice of 3 specialisations in the third year:

  • Geophysics applied to the exploration and production of raw materials: seismic and hydrodynamic characterisation of reservoirs, seismic processing and interpretation, potential methods.
  • Geophysics applied to geotechnics: geotechnics and the resistance of materials applied in civil engineering, geomechanics, hydrogeophysics, electromagnetic methods, earthquake.
  • Hydrogeology, hydrogeochemistry, hydrogeophysics (HydroG3).

Additional teaching:

  • Languages and economic and social sciences: English, energy economy, company strategy and structure.
  • Geophysics field camp in Alsace (photo).  Here are images of a normal fault in the Rhine Graben taken by students.
  • 6-month industry placement culminating in the writing of a dissertation and a viva before a jury in order to obtain the engineering degree. The placements are carried out all over the world.