Session 2

Tuesday 24 November : 11.00 am – 12.15 pm
Sponsored by


Session Champion

This session explores the potential for the oil and gas sector to work more collectively to shape the future of UKCS decommissioning business. Aiming to identify opportunities to establish the UK as a ‘global hub for decommissioning, the session offers the opportunity for both supply chain and operators to increase their understanding of where in the UK and globally their efforts can most effectively be deployed.

Speakers and Panellists

Win Thornton
VP Decommissioning

Over 40 years’ experience in offshore construction and decommissioning projects working as an Operator (BP, Chevron, OXY), Contractor (B&R, WorleyParsons) and Entrepreneur (TST, WINMAR). Win has a BSCE from Georgia Tech and an MSCE from the University of Houston. Industry recognized as an expert in offshore decommissioning and reuse. Managed the decommissioning of 250+ offshore facilities and 30+ reuse projects in the Gulf of Mexico. Global work experience includes offshore decommissioning and reuse projects in the Gulf of Mexico, North Sea, West Africa, California, Alaska, Southeast Asia and South America. Championed for 30+ years the environmentally sound and cost-effective disposal of obsolete platforms through placement in state sanctioned “Rigs-to-Reefs” programs.

John Allan
Decommissioning Director
EnQuest PLC

John is the Decommissioning Director at Enquest PLC where he is accountable for the development of decommissioning capability and project execution excellence.  John is a fellow of the Institution of Mechanical Engineers and previously worked for Shell International and Canadian Natural Resources where he led the Murchison, Ninian North and Olowi decommissioning projects.  Johns current directorate project portfolio at Enquest includes the Heather and Thistle platforms, Alma-Galia and the  Dons fields.  John is passionate about reducing both decommissioning costs and carbon emissions through constant challenge of project timing, scope and execution, encouraging a continuous improvement mind-set and building diverse, engaged project teams.

Walter Thain
Chief Executive Officer
THREE60 Energy

Walter is the Chief Executive Officer and co-founder of THREE60 Energy Group. With over 30 years of energy industry experience he is accountable for the strategic growth and safe delivery across their five service lines of Subsurface, Wells, Engineering, Construction and Operations in the three key geographies of UK, Norway and South East Asia. He is extremely passionate around flexible and value driven service delivery, through late life operations to decommissioning, with a continual focus on differentiated contractual models that ultimately lower abandonment costs. He has significant experience both in the UK and International which is coupled with an (Hons) degree and a professional qualification in Civil Engineering.

Pauline Innes
Head of Offshore Decommissioning

Oil and Gas Authority

Pauline Innes is Head of Decommissioning for the Oil and Gas Authority. As late-life entrant to the oil and gas industry she has worked in decommissioning for five years, initially as Director for Decommissioning in the Offshore Petroleum Regulator for the Environment and Decommissioning before joining the OGA in late 2019. She has a background in the public sector, spending most of her career dealing in social and economic policy for the Scottish Government before joining UK Government’s offshore oil and gas decommissioning team in 2015.  She is an experienced leader and has worked with multi-disciplinary teams to deliver innovative and collaborative projects across Scotland.

Peter Cacela
NNS &WoS Decommissioning Lead

Oil and Gas Authority
Representing East of Shetland Decommissioning Group

Peter is the Northern North Sea and West of Shetland lead in the Oil and Gas Authority’s Decommissioning Team. With a background in geophysics and petroleum geochemistry, Peter spent a decade working in worldwide offshore and onshore roles, both technical and management, in seismic surveying. Intent on pursuing his curiosity in the decommissioning optimisation challenge, Peter then returned to home turf where he undertook Aberdeen University’s Decommissioning MSc programme en route to his current role. Peter believes strongly in the value that industry partnership can bring in terms of efficiency, sustainability, and emissions reductions, underlain by principles of fairness, commercial alignment and nurtured trust.

Malcolm Watt
Senior Development Lead
Total E&P UK Ltd
Representing East of Shetland Decommissioning Group

Malcolm is currently Senior Development Lead within the Strategy and Business Department of Total E&P UK Ltd (TEPUK), responsible for delivering development studies, including decommissioning studies, across the TEPUK assets. Working with Total for 18 years in a variety of roles, both in development studies, and Projects & modifications execution, he has broad and practical experience ranging from concept development through to commissioning and handover. Malcolm is the facilitator of the East of Shetland Area Decommissioning workgroup.