Oil and gas firm Apache North Sea (ANS) last month completed its acquisition of the assets of Mobil North Sea, including the Beryl field, from ExxonMobil.
The £1.1billion deal, announced in September, has seen Apache assume operatorship of the Beryl, Nevis, Ness, Nevis South, Skene and Buckland fields as well as the Beryl/Brae gas pipeline and Sage gas plant.
The transaction also included non-operated interests in the Maclure, Scott and Telford fields and exploration acreage at Benbecula, west of Shetland.
ANS has said it expects the move to increase its production in the region by more than 50%.
Another sizeable North Sea deal announced last year was Premier Oil’s £221million swoop to buy smaller rival EnCore Oil.
Right at the end of 2011, Endeavour International revealed a £200million-plus move to buy a chunk of North Sea production to help it become one of the larger independents in the basin.
The deal bought ConocoPhillips’ interest in the Alba, MacCulloch and Nicol fields, boosting its North Sea production of under 2,000 barrels of oil per day by 10,000 barrels of oil equivalent per day. The deal also added reserves of about 33million barrels of oil equivalent.