
Dr Brian Twomey had the honour of serving the Society of Petroleum Engineers (SPE) as a Distinguished Lecturer for the 2024-2025 season, during which he toured the US and the Asia Pacific.
Visit the SPE Distinguished Lecturer website for more information
LIABILITY IS FOREVER: RISK ELEMENTS IN THE IMPLEMENTATION OF DECOMMISSIONING AND WELL P&A
Session Abstract
Decommissioning, well plugging, and abandonment (D&A) are often the unsung heroes of the oil and gas industry. While these activities are crucial to any project’s lifecycle, they are frequently overlooked during the initial planning stages. Despite the significant costs associated with D&A, which can sometimes even exceed those of initial development, they rarely receive the same level of attention as construction and drilling.
This neglect can lead to significant financial and environmental liabilities. Planning for decommissioning from the very beginning of a project is essential to mitigate these risks. Operators can significantly reduce costs and minimise environmental impact by incorporating D&A considerations into the initial project design.
The presentation shared valuable insights and lessons learned from global projects. By understanding the importance of proactive D&A planning, we can ensure a sustainable future for the oil and gas industry.
Tour Highlights
It has been a whirlwind of a trip, from flight cancellations because of snowstorms to volcanic eruptions; this experience is one to be remembered. Dr Brian Twomey welcomed the challenging itinerary, which allowed him to meet with over 400 attendees and share this vital topic, where he was met with a highly enthusiastic crowd at each location. Here are some of the key highlights of the tour, read more about each location in the following articles.
SPE DISTINGUISHED LECTURER USA TOUR OUTCOME (Dec 2024)
Dr Twomey had a remarkable experience for the first leg of his SPE Distinguished Lecturer tour in the US in December 2024. Thank you to the SPE sections in Michigan, Illinois, Oklahoma, and Wyoming for hosting a great session during the winter season!
- Tuesday, 3 December 2024: SPE Michigan Section (Lansing)
- Thursday, 5 December 2024: SPE Northern Michigan Section (Traverse City)
- Monday, 9 December 2024: SPE Midwest Gas Storage Section (Pontiac)
- Wednesday, 11 December 2024: SPE Mid-Continent Section (Tulsa)
- Friday, 13 December 2024: SPE Wyoming Petroleum Section (Casper)
SPE DISTINGUISHED LECTURER APAC TOUR OUTCOME (Mar-Apr 2025)
The second leg of Dr Twomey’s SPE Distinguished Lecturer tour in the Asia Pacific wraps up his season with a bang. Thank you to the SPE sections in Thailand, Australia, New Zealand, and Timor-Leste for the warm hospitality, and to the attendees for your enthusiasm during the sessions!
- Thursday, 20 March 2025: SPE Thailand Section (Bangkok)
- Monday, 24 March 2025: SPE New South Wales/Australian Cap Section (Sydney)
- Wednesday, 26 March 2025: SPE South Australian Section (Adelaide)
- Thursday, 27 March 2025: SPE Queensland Section (Brisbane)
- Monday, 31 March 2025: SPE New Zealand Section (New Plymouth)
- Thursday, 3 April 2025: SPE Western Australia Section (Perth)
- Monday, 7 April 2025: SPE Timor-Leste Section (Dili)
SPE DISTINGUISHED LECTURER APAC 2.0 TOUR OUTCOME (JUNE 2025)
The third and final leg marks the end of Dr Twomey’s SPE Distinguished Lecturer journey, this time visiting cities and countries that were not included in the first two tours. We thank the SPE Sections and attendees in Japan, Indonesia, Brunei, and Miri, Malaysia for making this a memorable experience!
- Monday, 9 June 2025: SPE Japan Section (Tokyo)
- Thursday, 12 June 2025: SPE Java Section (Jakarta)
- Tuesday, 17 June 2025: SPE Brunei Section (Bandar Seri Begawan)
- Thursday, 19 June 2025: SPE Sarawak Section (Miri)

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