[2] The discovery was made 2,709 metres (8,888 ft) below the seabed in the younger sands of the Late Jurassic by the semi-submersible drilling rig Sedco 703.

It was announced on 24 January 2017 that BP will sell a 25% share of the field and turn over the operatorship to EnQuest.

The Magnus jacket is the largest single piece steel structure in the North Sea.

The original system also included seven subsea producing wells which were later turned around to water injection duty.

Electricity generation was powered by three 27 MW GE Frame 5 gas turbines.

[6] The produced oil is transported by a 91-kilometre (57 mi) long 24-inch (610 mm) pipeline to the Ninian Central platform, and further to the Sullom Voe Terminal.

It is expected to increase the recoverable oil reserves by 50 million barrels (7.9×10^6 m3) and extend the field life to beyond 2015.