Decommissioning Insight 2019

DECOMMISSIONING INSIGHT 2019 5. A Decade of Decommissioning Insight

10 years of Insights...

• Survey launched based on OGUK Operator Activity Survey • Total cost of decommissioning estimated £27bn • £1bn per annum spend

2010

• Survey broken down into NNS, CNS and SNS • Total decommissioning costs estimated at £27bn —Wells 16%; Removals 34%

2011

• OGUK performs first dedicated Insight operator survey • UKCS well decommissioning estimates rise to 44% of total cost

2012

• Survey adopts a 10- year lookahead for first time; estimating £10.4bn • OGUK issues the

2013

• Survey

structured around WBS for first time

decommissioning Work Breakdown Structure (WBS)

2014

• Participation

increases to 28 operators • 10-year outlook reaches £14.6bn

Key Projects

Heerema’s Thialf lands part of the

Murchison jacket at AF Offshore Decom’s Environmental Base in Vats, Norway’

Brent Delta topsides removed in 24,000t single lift

Miller platform and topsides removed by Saipem’s S7000

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