SPE Global Training Series:
Introduction to Offshore Decommissioning

Management and Information Projects, Facilities and Construction Production and Operations Health, Safety, Environment, and Social Responsibility


This course is an introduction to the new and growing discipline of offshore decommissioning. This course introduces the complex cross-discipline nature of offshore decommissioning. The course is a mixture of presentations, discussion, videos, animations, and workshop exercises.

Topics Include:

  • What is decommissioning?
  • History and review of worldwide offshore decommissioning
  • Decommissioning law & regulation & other key drivers
  • Decommissioning liability
  • The decommissioning engineering process & marine operations
  • Decommissioning technology
  • Introduction to Well P&A challenges
  • Environmental and safety in decommissioning
  • Transition from production to decommissioning
  • Background to decommissioning cost estimating

Learning Level

Introductory to Intermediate

Course Length

3 Days

Why Attend?

Decommissioning is a rapidly developing market sector in the petroleum business, with major potential and major risks. Decommissioning is a source of major liability for counties, operators, contractors and the public, which must be understood if it is to be managed cost effectively.

Who Should Attend

Engineering managers, decommissioning engineers, environmental managers, HSE managers, regulators, accountants, governance managers, insurance brokers, lawyers, and professionals involved with economic evaluations, forecasting and economic decisions in the upstream oil and gas business.


2.4 CEUs (Continuing Education Units) will be awarded for this 3-day course.

In-House Training

This course is available for in house training at your office location.

Contact Us
Email inhousetraining@spe.org
Americas +1.972.952.1155
Asia Pacific +60.3.2182.3000
Canada +1.403.930.5454
Middle East and North Africa +971.4.457.5875
United Kingdom +44.20.7299.3300


Brian Twomey is the managing director of Reverse Engineering Services Ltd, Manchester, UK and is responsible for decommissioning and abandonment operations planning, decommissioning engineering, peer review work, and cost analysis. He has worked on oil and gas decommissioning and pipeline issues for over 24 years, and has carried out decommissioning studies/work on over 780 offshore, subsea, subsurface and onshore installations worldwide. In 2012, Twomey co-authored with ASCOPE the “ASCOPE Decommissioning Guidelines”, which will be released this year.

Twomey holds a BSc in mechanical engineering from Birmingham, and a dual MSc in applied mechanics & composite materials, and a PhD in applied mechanics from University of Manchester Institute of Science and Technology (UMIST).