[1] The reservoir has the following characteristics:[2][3] 12.8 million tonnes The field was originally licensed to a joint venture comprising Amoco UK Petroleum Limited (30.77%), Enterprise Oil plc (30.77%), Amerada Hess Exploration Ltd (23.00%), and Texas Eastern (UK) Ltd (15.38%).

Oil was initially exported through a pair of CALM buoys located 1.7 km from the platform.

The original processing plant on Montrose A had a nominal capacity of 60,000 barrels of oil per day.

The production of oil (in 1000s barrels) was:[2]There were two Catenary Anchor Leg Mooring (CALM) buoys in 91 metres of water.

They were decommissioned in 1984 when the 48 km 14-inch oil export line from Montrose to Forties Charlie was commissioned.

In 1990, Amoco modified the Montrose A processing equipment to receive oil from the then new Arbroath field integrated drilling and production platform.