The Tartan oil field is located in Blocks 15/16a and 14/20a of the UK North Sea continental shelf.

[1] The Tartan field was discovered in February  1975 and the oil reservoir comprises an Upper Jurassic sandstone at a depth of 9,800 to 12,000 feet (2,9873 to 3,658 metres).

The failure of the riser of this pipeline at about 22:20 6 July 1988 during the Piper Alpha disaster led to a second major explosion followed by a widespread fire.

[5] Produced water from the separators was treated in a degassing vessel and hydrocyclones to an oil-in-water concentration of less than 30 mg/litre prior to discharge overboard.

[5] The fluid handling capability of the Tartan facilities in its latter years of operation was as follows:[5] Repsol Sinopec were granted a Cessation of Production authorisation by the UK Oil and Gas Authority in August 2020.