Tolmount East is a conventional gas development located in shallow water in the UK and is operated by Premier Oil E&P UK. Discovered in 1973, Tolmount East lies in block 42/28d ALL, with water depth of around 175 feet.

The project is currently in approval stage and is expected to start commercial production in 2023. Final investment decision (FID) of the project was approved in 2021. The Tolmount East conventional gas development will involve the drilling of approximately one wells and includes subsea manifold and subsea trees.

Field participation details

The field is owned by Korea National Oil and Harbour Energy.

Production from Tolmount East

Production from the Tolmount East conventional gas development project is expected to begin in 2023 and is forecast to peak in 2025, to approximately 2,135 bpd of crude oil and condensate and 115 Mmcfd of natural gas. Based on economic assumptions, the production will continue until the field reaches its economic limit in 2047.

Remaining recoverable reserves

The field is expected to recover 53.4 Mmboe, comprised of 5.34 Mmbbl of crude oil & condensate and 288.32 bcf of natural gas reserves.


Information on the field is sourced from GlobalData’s fields database that provides detailed information on all producing, announced and planned oil and gas fields globally. Not all companies mentioned in the article may be currently existing due to their merger or acquisition or business closure.