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E-331C - Miscible Gas Injection EOR Certification

5 days GRE/EOR-G
Level
Advanced
Audience
  • Reservoir engineers involved in miscible gas injection EOR projects
Purpose
  • To provide a thorough understanding of miscible gas injection method and its connection to fundamental mechanisms of oil reservoir production
  • To provide information for decision making of miscible gas injection EOR projects based on presenting main displacement mechanisms, related screening criteria, dedicated simulation software and field cases
Learning Objectives
  • To describe recovery expectations from reservoirs under primary, secondary and tertiary methods
  • To describe main Enhanced Oil Recovery methods and explain the way they achieve higher recovery factor
  • To explain miscible gas injection mechanisms and related screening criteria
  • To list gas used in miscible gas injection method and compare their way of affecting oil recovery
  • To design and apply miscible gas injection method using empirical, analytical and simulation tools and evaluate its related performance
Ways and means
  • Interactive lectures and exercises
  • Field case studies
  • Use dedicated software for miscible gas injection

Reminders of oil reservoirs drive mechanisms 0.5 day
  • Primary recovery
  • Natural depletion of undersaturated oil reservoir
  • Solution gas drive
  • Natural water drive
  • Secondary recovery
  • Water and gas injection
  • Tertiary recovery - EOR
  • Chemical flooding
  • Miscible gas injection
  • Thermal flooding & MEOR
Displacement theory and fractional flow 0.5 day
  • Factors affecting oil recovery
  • Definitions: mobility ratio, sweeping efficiency
  • Fractional flow theory
  • Oil recovery calculation in homogeneous and stratified reservoirs
Phase behavior and fluid properties 1 day
  • Fundamentals of PVT. Phase envelope
  • Fluid properties affected by miscible gas injection
  • Ternary diagram
Miscible gas injection methods (CO2, N2, HC) 3 days
  • Principles & mechanisms of miscible gas injection
  • Minimum Miscibility Pressure (MMP).
  • Displacement mechanism (first contact, condensing drive, vaporizing drive)
  • Screening criteria
  • Laboratory experiments
  • Miscible gas injection design workflow
  • Miscible CO2 injection
  • Miscible hydrocarbon injection
  • Simulation and performance evaluation of miscible gas injection
  • Case study