The Estimation, Classification and Reporting of Reserves and Resources

Management and Information Reservoir Description and Dynamics

Course Description

This course provides an overview of the classification, estimation and reporting of reserves and resources. The focus of the course is on the SPE-PRMS (2018), but other systems such as SEC and COGEH are also included. The course will outline the key definitions of each of the main classes and categories of reserves and resources. The estimation methods which can be used, together with how and when each should be used is also covered. The course is illustrated by a series of case histories, examples and exercises that show the practical application of the principles.

Learning Level


Course Length

1 Day

Why Attend

  • Provide an overview on international industry practices
  • Ensure a thorough understanding of key definitions and guidelines and the relationship between reserves and resources
  • Discuss the handling of risk and uncertainty, including deterministic and probabilistic methodologies
  • Hands-on examples and case histories to illustrate key points

Who Attends

Professionals who are or will be responsible for reserves/resources estimation and reporting of reserves and resources to senior management within the company or externally from these disciplines: 

Technical disciplines may include:

  • Asset Management
  • Commercial
  • Drilling Engineering
  • Economists
  • Field Development Plan (FDP)
  • Geological and Geophysical (G&G)
  • Petroleum Engineering
  • Petrophysicists
  • Portfolio Management
  • Reserves Management
  • Reservoir Engineering
  • Resource Analysis and Evaluation


0.8 CEUs (Continuing Education Units) will be awarded for this 1-day course.

Special Requirements

Attendees are required to bring their own laptops.


Dr John W. Barker is a Technical Director in Reservoir Engineering with Gaffney, Cline & Associates (GCA) in the UK, with 34 years’ experience in major oil companies (BP, Elf/Total) and consulting. As a member of the Society of Petroleum Evaluation Engineers (SPEE), he reviews and signs off for GCA on Competent Person’s Reports for Stock Exchange listings and reserves reports for financial and other purposes. He has extensive experience in reserve/resource estimation and auditing for fields of all sizes. He is a former Executive Editor of the SPE Reservoir Engineering journal and has authored 34 technical publications, mainly on reservoir simulation and enhanced oil recovery. He won the SPE Reservoir Description and Dynamics Regional Award for the North Sea Region in 2017. He holds an M.A. in Mathematics from Cambridge University and a Ph.D. in Applied Mathematics from the California Institute of Technology.