Decommissioning

North Sea topside decom ops benefit from integrated load-ins
Netherlands-based heavy lifting and transport provider Mammoet has streamlined two topside decommissioning projects in the North Sea by employing combined planning to curb costs and delivery time.

AF Gruppen buys Acteon business to expand its decom and offshore wind offering
Norway’s AF Gruppen is acquiring Aberdeen-headquartered Claxton, a provider of technology-driven services and engineering primarily within offshore decommissioning, from the UK-headquartered Acteon Group for an agreed enterprise value of £63.5 million (around €72.8 million). The transaction comprise

Multimillion-dollar fine for EnQuest over 33 idle wells as UK cracks down on decom inactivity
Great Britain’s regulator, North Sea Transition Authority (NSTA), has hit London Stock Exchange-listed energy player EnQuest with a penalty over decommissioning failures related to 33 inactive wells.

27-year-old FPSO ends its final voyage at European ship recycling facility
A floating production, storage, and offloading (FPSO) unit has reached its final destination in Europe, where it will be recycled at Modern American Recycling Services (MARS) in Denmark.

AF Offshore and Heerema tasked with removing 39,500-ton North Sea platform
A consortium of AF Offshore Decom, part of AF Gruppen, and Heerema Marine Contractors (HMC) has secured a contract for the engineering, preparation, removal and disposal (EPRD) of a North Sea platform on the UK Continental Shelf (UKCS). The platform’s topsides weigh approximately 27,500 tons and the

Another ‘major’ North Sea decom job comes AF Offshore’s way
AF Offshore Decom (AFOD), a subsidiary of AF Gruppen, has been hired on a new decommissioning project on the UK Continental Shelf (UKCS) by Ithaca Energy, a North Sea oil and gas operator and producer.

Aquaterra Energy chosen for multi-well intervention and abandonment in Spain
Aquaterra Energy, a UK-headquartered offshore energy engineering solutions provider, has secured a contract with an undisclosed client for well intervention and abandonment services offshore Spain. Aquaterra Energy said that the contract, worth seven figures and encompassing multiple years, will see

McDermott at the helm of major decom job for 27 offshore platforms
U.S. offshore engineering and construction player McDermott has been tasked with a strategic role in offshore asset retirement, which is being undertaken by Qatar’s state-owned oil and gas giant QatarEnergy. This is described as the Persian Gulf state’s first major offshore decommissioning project.

Ithaca Energy books AF Offshore for North Sea decom gig
AF Offshore Decom (AFOD), a subsidiary of AF Gruppen, has landed a new decommissioning project on the UK Continental Shelf (UKCS) with Ithaca Energy, a North Sea oil and gas operator and producer.

Readers’ choice: Offshore Energy’s most-read news in 2025
As the offshore energy sector continued to navigate the energy transition and technological development, but also uncertainty, 2025 saw continued shifts in policy, investment, and project development across the global energy landscape. To mark the year’s end, the Offshore Energy editorial team looks

Serica brings another multimillion-dollar oil & gas acquisition to a close in UK
UK-based upstream oil and gas player Serica Energy has completed the acquisition of Prax Upstream, a subsidiary of compatriot Prax Exploration & Production, expanding its hydrocarbon portfolio on the UK Continental Shelf (UKCS).

13 UK operators fall behind on their decom duty with 153 wells in arrears
Great Britain’s regulator, the North Sea Transition Authority (NSTA), has signaled its readiness to tackle the decommissioning deficit on the UK Continental Shelf (UKCS) by revealing the names of operators that are lagging behind their peers in the decommissioning department.

Subsea7 lands multimillion-dollar decom gig in UK waters
Luxembourg-domiciled Subsea7 has been hired on an off-station decommissioning services assignment on the UK Continental Shelf (UKCS).

DeepOcean winding down North Sea FPSO disconnection gig for TotalEnergies
DeepOcean is close to crossing the finish line for an assignment in the North Sea, which entails the disconnection and tow of a floating production, storage, and offloading (FPSO) vessel, alongside the removal of associated subsea infrastructure on the UK Continental Shelf (UKCS).