Mariner East is a heavy oil development located in shallow water in the UK and is operated by Equinor UK. According to GlobalData, who tracks more than 34,000 active and developing oil and gas fields worldwide, Mariner East was discovered in 1997, lies in block 9/11b ALL, with water depth of around 340 feet. Buy the profile here.

The project is currently in construction stage and is expected to start commercial production in 2023. Final investment decision (FID) of the project was approved in 2012. The Mariner East heavy oil development will involve the drilling of approximately four wells and includes subsea manifold and subsea trees.

Field participation details

The field is owned by Delek Group, Equinor, HitecVision and ONE-Dyas.

Production from Mariner East

Production from the Mariner East heavy oil development project is expected to begin in 2023 and is forecast to peak in 2024, to approximately 15,618 bpd of crude oil and condensate. Based on economic assumptions, the production will continue until the field reaches its economic limit in 2070.

Remaining recoverable reserves

The field is expected to recover 24.90 Mmboe, comprised of 24.90 Mmbbl of crude oil & condensate.

Contractors involved in the Mariner East heavy oil field

Some of the key contractors involved in the Mariner East project as follows.

Main EPC: Subsea 7 and Actividades de Construccion y Servicios

EPC Contractors: SIF Group

Other Contractors: PGS, Jotun, Apply, Norwegian Piping and CSUB

About Equinor UK

Equinor UK Ltd (Equinor), formerly Statoil (U.K.) Ltd is an oil and gas company that develops, markets and supplies natural gas and crude oil. It carries out offshore operations to develop various offshore wind technologies and projects. The company's activities include offshore wind, upstream operations, natural gas trading and crude oil sales. Statoil UK's wind projects include Sheringham Shoal wind farms, Dogger Bank offshore wind project, Hywind Scotland Pilot Park and Dudgeon wind farms. The company owns oil and gas properties in the UK continental shelf. It trades and markets gas to industrial customers across Europe. The company operates through its office located in Aberdeen, the UK. Equinor is a subsidiary of Statoil ASA and headquartered in London, the UK.

For more details on the Mariner East Heavy Oil Field, buy the profile here.


GlobalData, the leading provider of industry intelligence, provided the underlying research used to produce this article.

This information is drawn from GlobalData’s Oil & Gas Intelligence Center, which provides detailed profiles of 34,000+ oil and gas fields, 400,000+ exploration blocks, 1,100+ LNG terminals, 3,400+ gas processing plants, 5,000+ storage terminals, and 8,000+ pipelines, 1,400+ refineries and 13,000+ petrochemical plants worldwide.