Statoil has awarded Baker Hughes a contract for production chemicals and services for the Mariner field.
The company will design and supply production chemicals and services as part of an eight year contract anticipated to begin next month.
The contract will also hold the possibility of an extension option for four years.
The Mariner platform will have an estimated production of around 55,000 barrels of oil per day over the plateau period.
More than £4.5billion has been invested in the project, which is expected to produce for at least 30 years.
Production is expected to start in 2017.
The development plan includes a production, drilling and quarters (PDQ) platform based on a steel jacket, with an FSU (Floating Storage Unit).
Statoil is the operator of Mariner with a 65.11% share.
The company’s co-venturers are JX Nippon Exploration and Production Limited with 28.89% and Dyas UK Ltd with 6%.