Decommissioning Insight 2019

DECOMMISSIONING INSIGHT 2019

Normally Occurring Radioactive Material

NORM

OGA

Oil and Gas Authority

Offshore Petroleum Regulator for Environment and Decommissioning OSPAR is the mechanism by which 15 Governments & the EU cooperate to protect the marine environment of the North-East Atlantic. Reverse installation whereby the topsides modules are lifted separately onto a transportation barge or the deck of the crane vessel before being taken onshore. The piece-small method involves dismantling the topside and using onshore demolition techniques to produce small, manageable pieces that can be transported onshore. Personnel on Board. Commonly used in the oil and gas industry to indicate either bed space capacity or number of people on board an oil and gas platform.

OPRED

OSPAR

Piece-large

Piece-small

PoB

Post-CoP OPEX

Operational expenditure after production has ceased.

Reverse installation

Same as piece-large

SEPA

Scottish Environmental Protection Agency

The single-lift method involves removing the topside in one piece and may involve extra engineering work to reinforce the topside in preparation for removal.

Single-lift

Steel-piled jacket

SPJ

The facilities which sit on top of an installation, typically including drilling, processing and living quarters.

Topsides

UKCS

United Kingdom Continental Shelf

Well decommissioning

Also referred to as plugging and abandonment (P&A)

The WBS shows all elements of a typical decommissioning project and forms the basis for calculating decommissioning expenditure during different stages of the process.

Work Breakdown Structure (WBS)

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