Basic Reservoir Engineering

Trainer(s): Wim Swinkels
Duration: 5 days

Business context

In the E&P business, Reservoir Engineers play a key role in handling, analysing and interpreting subsurface and production data at all stages of field development. Reservoir Engineering data and models are used in field development plans to optimise economic production of hydrocarbons. 

In this course fundamental concepts and a broad spectrum of modern practical reservoir engineering methods are addressed. Extensive use is made of practical and actual field problems to illustrate relevant subjects.

Who should attend

The course is aimed at new reservoir engineers and petroleum engineering staff, who are familiarizing with the application of reservoir engineering methods in their daily practice.

Course content

  • Reservoir rock properties.
  • Capillary pressures, surface tension, wettability.
  • Distribution of hydrocarbon fluids, pressure regimes, fluid gradients and contacts
  • Hydrocarbons-in-place estimation
  • The SPE PRMS system for reserves and resource classification and estimation
  • Fluid properties and phase behaviour,  PVT parameters, fluid sampling and laboratory procedures
  • Recovery drive-energy, material balance, recovery factors and production forecasts.
  • Gas reservoir engineering concepts.
  • Radial flow equations and well behaviour
  • Skin: source and how to minimize it.
  • Design and interpretation of pressure transient well tests: drawdown and build-up.
  • Production forecasting
  • Relative permeability, movable oil, fluid displacement,  mobility,
  • Reservoir heterogeneity and sweep.
  • Reservoir simulation principles
  • EOR principles
  • Field Development Planning

Learning, methods and tools

At the end of the Basic Reservoir Engineering Course participants will understand the physics of oil and gas fields, and have an awareness of modern reservoir engineering principles and practical considerations for reservoir development and production, including the estimation of oil and gas reserves.

Topics are introduced by lectures and discussion, and learning is re-inforced by practical small classroom exercises. Active participation is encouraged.  Use of laptops and other handheld devices for the exercises is encouraged and facilitated. Hand-out material in paper and/or electronic format will be provided.

Day by day programme

Day 1 - Reservoir rock and volumes

  • Course Introduction, the Reservoir Engineering work flow, example case
  • Reservoir rock properties, permeability permeability porosity and fluid flow
  • Permeability avareaging
  • Capillary pressure and saturation height relations
  • Distribution of hydrocarbon fluids
  • Exercise:  fluid gradients and contacts
  • Volumetric Oil in Place and Gas in Place calculations (STOIIP and GIIP)
  • Reserves and resources: the SPE PRMS system
  • Exercise: Hydrocarbons in place estimation

Day 2 - Fluid behaviour and Material Balance

  • Oil and gas, composition and phase behaviour
  • Reservoir fluid properties of oil and gas
  • Exercise PVT correlations for oil and gas
  • Drive Mechanisms and Oil Material Balance,
  • Read and discuss: material balance field case

Day 3 - Well behaviour and well tests

  • Gas Material Balance and applications,
  • Exercise volumetric gas volume estimation, p/z plot
  • Wells, inflow performance, skin, horizontal wells
  • Exercise: use of well inflow calculations
  • Exercise: gas production forecasting
  • Oil well testing,  Pressure Draw Down and Build Up analysis
  • Decline Curve Analysis and Production forecasting
  • Exercise: oil production forecasting

Day 4 - Displacement, sweep and reservoir modelling

  • Relative permeability and capillary pressure, movable oil
  • Displacement and Recovery, sweep, heterogeneity
  • Exercise mobility ratio
  • Reservoir Simulation - Basic Principles
  • Reading and discussion of simulation field cases

Day 5 - Recovery and development planning

  • Recovery
  • Principles of Enhanced Oil Recovery
  • Oil Field Development Planning
  • Gas field development planning
  • Exercise: development planning regulations
  • Handling uncertainty
  • Course Recap, Quiz and evaluation