Basic Reservoir Engineering

Reservoir Descriptions and Dynamics Production and Operations


This training course presents a thorough overview of the physical processes that occur in hydrocarbon reservoirs during their appraisal and development. The basic concepts are described. The intent of this course is to develop a more complete "understanding" of the characteristics of oil and gas reservoirs, from fluid and rock characteristics through reservoir definition, delineation, classification, development plan, and production. This basic reservoir engineering course will expose participants to the fundamentals of reservoir engineering as a tool for characterisation of oil and gas reservoirs as to their hydrocarbon content and recovery potential with different natural drive mechanisms and exposure to well-test interpretation techniques for oil and gas wells.

1. Introduction

  • Role of the Reservoir Engineer
  • Units and Conversions
  • Common Nomenclature and Abbreviations
  • Activities in Reservoir Engineering
    • Observations
    • Assumptions
    • Calculations
    • Decision Making

2. Storage Capacity of Reservoir Rocks

  • Pore Geometry and Porosity
  • Wettability
  • Capillary Pressure
  • Fluid Distribution in a Real Reservoir

3. Hydrocarbon Fluid Properties

  • Composition and Chemistry
  • Phase Behaviour
  • Properties of Ideal Gases
  • Properties of Real Gases and Fluids
  • Pressure, Volume and Temperature (PVT) Data Measurement
  • Conversion of PVT Data to Field Conditions

4. Darcy’s Law and its Applications

  • Reservoir Permeability and Anisotropy
  • Differences between Gas and Liquid Permeability
  • Absolute, Effective and Relative Permeabilities
  • Reservoir Engineering Context of Relative Permeability
  • Inflow Performance

5. Principles of Fluid Flow in Porous Media

  • Radial Diffusivity Equation (RDE)
  • RDE Qualitative Solutions
  • RDE Quantitative Solutions
  • Superposition of Solutions
  • Inflow Performance for Non-ideal Drainage Areasa

6. Basic Concepts in Reservoir Engineering

  • Rock and Fluid Properties and Residual Saturations
  • Reservoir Pressure
  • Inflow Performance Relationships
  • Reservoir Drive Mechanisms
  • Introduction to Material Balance
  • Reservoir Mobility Ratio and its implications to production

7. Material Balance for Oil and Gas Reservoirs

  • The General Form of the Material Balance Equation
  • Material Balance Expressed as a Linear Equation
  • Material Balance Applied to Oil Reservoirs
  • Material Balance Applied to Gas Reservoirs

8. Introduction to Well Testing of Oil Reservoirs

  • An Overview of Downhole Testing Tools
  • Pressure Drawdown Test
  • Pressure Buildup Test
  • Well Test Concepts

Principles of Gas Well Testing

  • Gas Pseudo Pressure Function, m(p)
  • Stabilised Gas Flow in terms of Pressure
  • Stabilised Gas Flow in terms of m(p)
  • Non-Darcy or Turbulent Flow
  • Deliverability Testing of Gas Wells

Learning Level


Course Length

5 Days

Why Attend?

This course sets out to explain how basic Reservoir Engineering principles should be applied and adhered to in the work place to help with the estimation of realistic recovery factors, reservoir performance prediction and monitoring, and the setting up of reliable simulation models for future production forecasting. The course is designed specifically for engineers and scientists starting up in the upstream oil and gas industry.

Who Should Attend

The course has been designed for engineers and scientists, who will be primarily involved in Reservoir Engineering, Field Development and Reservoir Monitoring / Performance Evaluation activities. This course is also suitable for those in Asset Management.

Special Requirements

The participants should have a basic numerate / scientific background.


Engineers are responsible for enhancing their professional competence throughout their careers. Licensed, chartered, and/or certified engineers are sometimes required by government entities to provide proof of continued professional development and training. Training credits are defined as Continuing Education Units (CEUs) or Professional Development Hours (PDHs).

Attendees of SPE training courses earn 0.8 CEUs for each day of training. We provide each attendee a certificate upon completion of the training course.


“Raj” Rajeswaran

“Raj” Rajeswaran’s experience spans 35 years in the upstream oil and gas industry and academia in addition to seven years as a process design engineer with ICI (UK). He has a PhD in chemical engineering (Hereto-Watt, UK) and an MBA (Hull, UK). He has held many senior technical and managerial petroleum engineering positions in major oil and gas companies (Arco, BNOC/Britoil, Delhi Petroleum, Ampolex, Mobil and Sentry Petroleum) and has extensive practical experience in large-scale field developments. Over a period of 12 years, Raj was Technical Advisor to Bank of Scotland and during this time was Professor of Petroleum Engineering at Curtin University of Technology. Between 2008 and 2012   Raj was President and CEO of Sentry Petroleum.