Géostatistiques

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

Description


L'objet de ce cours est de présenter des méthodes relevant de la géostatistique et de l'optimisation pour construire, dans un cadre intégré, des modèles de réservoir vérifiant les données disponibles. Les étapes essentielles du processus de construction sont la modélisation géologique, le passage à l'échelle du modèle géologique vers le modèle réservoir, la simulation d'écoulement et le calage proprement dit. Ces quatre points seront abordés séquentiellement. Enfin, on soulignera la nécessité de considérer le processus de modélisation dans son ensemble plutôt que séquentiellement.



The purpose of this course is to present geostatistical and optimization methods to build reservoir models that verify the available data in an integrated framework. The essential steps in the construction process are geological modeling, scaling from the geological model to the reservoir model, flow simulation and calibration. These four points will be discussed sequentially. Finally, the need to consider the modeling process as a whole rather than sequentially will be stressed.
 

Compétences visées

Afin de comprendre la façon dont les fluides s'écoulent dans les réservoirs souterrains, l'ingénieur génère des modèles sous la forme de grilles 3D habillées en propriétés physiques (porosité, perméabilité, faciès). Les modèles de réservoir sont utilisés pour prédire la façon dont les fluides circulent. Pour qu'un modèle soit fiable, il faut au minimum qu'il respecte l'ensemble des données collectées : observations géologiques, attributs sismiques, mesures de diagraphie, mesures sur carottes, pressions aux puits, débits d'huile...


To understand how fluids flow in underground reservoirs, engineers generate models in the form of 3D grids dressed in physical properties (porosity, permeability, facies). Reservoir models are used to predict how fluids flow. For a model to be reliable, it must at least respect all the data collected: geological observations, seismic attributes, logging measurements, core measurements, well pressures, oil flow rates...

 


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.