OT43110 - Non-Residents Working on the UK Continental Shelf: Transfer Pricing - What is a Rig?
Drilling for oil from fixed platforms is not suitable for many locations. Drilling operations are often therefore carried out by mobile structures generically called “rigs”. The main types employed in the North Sea are currently (2009):
In addition, there are other vessels used in oil production and the oil industry generally which are commonly leased on bareboat charter including Floating Production, Storage and Offloading vessels (FPSOs), heavy lift and seismic vessels.
FPSOs can be either a decommissioned oil tanker or a new vessel. They are floating tank systems designed to take oil or gas produced from a nearby platform, process and store it until it can be offloaded onto conventional tankers or a pipeline.