Royal Dutch Shell Plc (NYSE: RDS.A) plans to raise the output capacity at its giant Ormen Lange Field offshore Norway by installing two new compressors, the operator said on Sept. 27.

The Ormen Lange gas field, which feeds the Langeled Pipeline under the North Sea, covers 20% of Britain's demand for natural gas.

The upgrade will increase the output capacity to 70 million cubic meters per day (MMcm/d) from the current output level of about 50 MMcm/d, Shell executives told Reuters during a visit to the plant, situated on Norway's west coast.

Separately, Shell said it would raise the capacity of its Nyhamna gas processing plant to 84 MMcm/d from 70 MMcm/d to accommodate the future output from the Aasta Hansteen Field, which is under development by Statoil ASA (NYSE: STO) and is expected to start production in the fourth quarter of 2018.

Shell's partners at Ormen Lange include Statoil, ExxonMobil Corp. (NYSE: XOM), DONG Energy and Norway's state-owned Petoro.