stream to Ninian Central. Vapour from the Lyell Separator was compressed and mixed with the Ninian Southern gas prior to further compression and dehydration. Ninian Northern The Ninian Northern installation was a steel jacket platform located 3.2 miles north-west of Ninian Central in a water depth of 141 metres. The platform was installed in June 1978 and was designed to operate as a satellite flowing well fluids directly to Ninian Central although it was equipped to partial process the well fluids. Production from Ninian Northern started in August 1980, and reached a peak of 89,587 Barrels of Oil per Day in June 1981. As originally conceived the process facilities comprised the following processes. Well fluids were routed to one of the separators either the High Pressure Separator or the Low Pressure Separator. Each acted as a 3-phase (oil/gas/water) separator. Oil from the separators was co-mingled and sent directly to Ninian Central via a 24” pipeline. As wellhead pressures declined a multi-phase pump was installed to provide sufficient pressure to export the oil to Ninian Central. Vapour from the Separators was used as fuel gas excess gas was routed to Ninian Central through a 10” gas pipeline. Produced water from the Separators was treated in hydrocyclones to remove oil prior to overboard disposal. Ninian Northern formerly had a water injection system to water-flood the reservoir; this was subsequently decommissioned. A Cessation of Production notice was approved by the Oil and Gas Authority (OGA) in November 2016. Production permanently ceased on Ninian Northern on 18 May 2017. Removal of the topsides was completed in 2021 and removal of the jacket in 2022. Notes External links Photo of Ninian Central "The Kishorn Commandos", film of the construction "14 Day Return", Chevron-made short documentary North Sea oil fields Oil platforms off Scotland 1978 establishments in Scotland