Amethyst is a natural gas field in the Southern North Sea, about 30 miles (48 km) east of the Yorkshire coast.

[5] The Rose gas field (Block 47/15) comprised a single subsea well tied back to the Amethyst A2D platform via a 9.042 km, 10” pipeline.

[1] The production profile, in million cubic metres per year (mcm/y), of the Amethyst East field was as shown.

[9] The production profile, in million cubic metres per year (mcm/y), of the Amethyst West field was as shown.

[9] In April 2020, Perenco submitted its draft decommissioning programmes for four Amethyst A1D, A2D, B1D & C1D topsides to the UK authorities.

[10] In July 2020, Perenco received approval for its draft decommissioning programmes for four Amethyst gas field topsides, located in the Southern North Sea, from the UK authorities.