Fundamentals of Reservoir GeologyRCM/RESGEOL

Who should attend?

  • This course provides an in-depth understanding of reservoir geology, covering concepts as well as data reviewing and modeling.
Audience :
  • Newly-hired and 2- to 3-year experienced reservoir engineers willing to deepen their knowledge in reservoir fluid properties and PVT modeling. Is is also intended for geoscientists, petroleum engineers and production engineers moving towards reservoir engineering.

Level : Proficiency

Course Content

  • INTRODUCTION TO RESERVOIR CHARACTERIZATION (E-200)

      • Introduction to reservoir characterization:
      • Reservoir characterization and modeling objectives.
      • Reservoir characterization and modeling workflows.
      • Data and related uncertainty.
      • Data integration.
      • Reservoir architecture:
      • Seismic interpretation and pitfalls
      • Well log analysis.
      • Facies analysis.
      • Rock-typing.
      • Petrophysics and rock properties.
      • Reservoir heterogeneities.
  • PETROPHYSICS - RESERVOIR PROPERTIES FROM CORES & LOGS EVALUATION

      • Reservoir properties from conventional and special core analysis:
      • Coring.
      • Porosity: definition and measurements (effective and total porosity); pore size distribution by NMR and mercury Injection.
      • Single-phase permeability: definition and measurements; liquid and gas permeability, Klinkenberg correction; permeability composition.
      • Capillary pressure: definition and measurements (porous plates and centrifuge/interpretation, local saturation); from lab to reservoir: Pc to determine reservoir initial saturations and transition zones.
      • Wettability: definition and measurements (Amott index, USBM index); influence of wettability on Pc.
      • Electric measurements. Formation factor and Resistivity Index (RI).
      • Multi-phase permeability: Darcy's law for two-phase flows core analysis; relative permeabilities: steady-state, unsteady-state, interpretations, synthesis.
      • Influence of wettability on the relative permeabilities.
      • Petrophysical rock-typing. Leverett J functions.
      • Reservoir properties from log evaluation:
      • Wireline logging operations and logs.
      • Open-hole log quick-look interpretation methodology.
      • Determination of reservoir properties from log interpretation (non-reservoir and reservoir zones, porosity, contacts, Archie’s law and saturations).
  • RESERVOIR MODELING WORKSHOP

      • Basic principles: introduction and objectives.
      • Case study: field presentation and data discussion
      • Project definition:
      • Data QC and summary table.
      • Interpolation and basic reservoir modeling.
      • Structural framework:
      • Structural context.
      • Time depth conversion.
      • Surfaces modeling and quality control.
      • Fault modeling and regions.
      • Well correlation and stratigraphic data analysis.
      • Grid building; grid zones and layering; geo-cellular grid validation.
      • Rock type and facies modeling:
      • Basic of geostatistics.
      • Rock typing.
      • Data analysis and facies modeling.
      • Property modeling:
      • Petrophysical modeling.
      • Seismic drivers in reservoir modeling.
      • Geological model analysis: N-t-G, porosity, permeability and water saturation.
      • Volumetric, upscaling and uncertainty:
      • Hydrocarbon volume calculation.
      • Structure and properties upscaling.
      • Quantification of uncertainty. Sensitivity analysis and ranking of models.
      • Inputs for reservoir simulators.
      • Summary, synthesis and wrap-up.

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • discuss main concepts of Reservoir Geology, especially petrophysical concepts, used in the description of reservoirs and the way the corresponding rock properties are measured from cores,
  • access to rock properties from log interpretation and compare to core measurements,
  • define petro-facies, electro-facies and rock-types,
  • integrate cores, logs and well tests data for reservoir modeling,
  • apply the workflow for building a reservoir static model using dedicated software,
  • identify and assess the uncertainties within the geomodeling wokflow.

Ways & Means

  • Interactive lectures, exercises.
  • Hands-on practice using software dedicated to reservoir modeling (PETREL™ and EasyTrace™)