Assessing Well Integrity Risk; A Qualitative Model

Reservoir Descriptions and Dynamics


To establish an effective Well Integrity Program (WIP) one of the first actions is to perform a risk assessment on the entire well portfolio. Once the risk profile is known then the WIP may be tailored to focus on the highest risk areas so that the maximum risk reduction can be obtained from limited resources. This course will look at several methods for assessing risk, and a specific Well Integrity qualitative failure mode assessment methodology will be studied in detail and applied and practiced in a workshop session by the training participants.

Learning objectives:

  • Understand the importance of assessing well integrity risk as part of program implementation;
  • Learn about a variety of qualitative risk assessment approaches and their application in helping to identify well integrity risks, and the limitations of each method.  Methodologies to be studied include Hazard Identification (HAZID), “What-if”, Failure Modes and Effects Analysis (FMEA), Hazop, Quantitative Risk Analysis (QRA), and others
  • Study in detail an applicable Well Integrity qualitative risk assessment process based on a customized“What If” methodology;
  • Participate in a hands-on class exercise of the qualitative method so that the student will have the knowledge to lead an assessment on their own well assets.

Learning Level


Course Length

Half- Day (4 hours)

Why Attend?

There are several methods of assessing well integrity risk and the most common of those will be discussed in this class. A qualitative method specifically designed to address well integrity issues will be demonstrated in detail with the intention the student will learn how to apply it on their own well stock.

Who Should Attend

This training is appropriate for those that may be tasked to perform risk assessments on any type of oil, gas or service well. Engineers that are involved with managing well integrity or have the need to assess the risk on wells prior to intervention or workovers will benefit from this training.


0.4 CEUs (Continuing Education Units) will be awarded for this half-day course.


Jerry Dethlefs is a Well Integrity Engineer with ConocoPhillips in Houston, Texas. Jerry has 35 years’ experience with well operations, intervention, production operations, and drilling. For 17 years his focus has been on well integrity issues including policy, diagnostics, best practices, program management, risk assessment and regulatory compliance. Jerry is an active member of industry standards committees on well integrity.

Jerry has a Bachelor of Science in General Engineering, a Master of Science in Civil Engineering and a Masters of Business Administration. He was an SPE Distinguished Lecturer during the 2010-11 season and has authored or co-authored six SPE papers on well integrity issues.

Bettina Chastain works as a Principal Consultant through her private consulting company, Arktis LLC.  Ms. Chastain spent the previous 15 years as President and CEO of Alaska’s premier process safety and risk management firm, Emerald Consulting (Doyon Emerald), which she founded in 1996.   Ms. Chastain has over 25 years of experience in the oil and gas industry working as a process engineer with OSHA’s Process Safety Management Program (1910.119) and in the risk management field.
She is a registered Chemical Engineer in the State of Alaska and received a Bachelor of Science in Chemical Engineering from the University of Arizona.  Ms. Chastain, was co-author with Mr. Dethlefs, of the SPE paper “Assessing Well Integrity Risk:  A Qualitative Method”, which was presented at the 2011 SPE/ICOTA Conference.