Decommissioning
The process of safely dismantling and removing oil and gas infrastructure (platforms, pipelines) at the end of production. Licensees have statutory obligations under the Petroleum Act 1998.
Independent editorial summary — not the official statute text. Read the official version on legislation.gov.uk.
The decommissioning of offshore oil and gas installations and pipelines on the United Kingdom Continental Shelf (UKCS) is controlled through the Petroleum Act 1998, with government guidance confirming that responsibility for ensuring the Act's requirements are met rests with the offshore energy regulator (formerly OPRED, now part of DESNZ's North Sea Transition Authority framework).
The 1998 Act does not simply require infrastructure to be removed — it requires a formal plan first. Owners of oil and gas installations and pipelines are required to decommission their offshore infrastructure at the end of a field's economic life and the 1998 Act requires owners to set out the measures to decommission disused installations and/or pipelines in a decommissioning programme. That programme is not a private document: a decommissioning programme must identify all the items of equipment, infrastructure and materials that have been installed or drilled and describe the decommissioning solution for each, and members of the public and other organisations are invited to comment on programmes under consideration before they are approved.
Because decommissioning can occur many years, or decades, after an installation was first licensed, the regulator also requires financial assurance in advance — guidance on assessing the financial capability of a person taking an interest in an offshore field exists specifically so that funds are available to complete an approved programme even if a licensee later becomes insolvent.
Example
A field operator whose North Sea platform reaches the end of its economic life must submit a decommissioning programme for regulatory approval — including a public comment period — before it can begin removing the platform or leaving pipelines in place under an agreed derogation.
Related terms
Official sources
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