Dana Petroleum (E&P) Ltd., a subsidiary of Korea National Oil Corp., let a contract to Subsea7 SA for work on the producing Bittern oil and gas field in the UK North Sea.
The contract, valued by the service provider at $50-150 million, includes project management, engineering, procurement, construction, and installation (EPCI) of a 22-km 12-in. water injection pipeline. Subsea7’s scope also includes associated subsea structures and tie-ins at the Triton floating production storage and offloading (FPSO) vessel and Bittern field.
Project management and engineering work will begin immediately in Aberdeen. The offshore activities are scheduled for third-quarter 2025.
Bittern, in Blocks 29/1a and 29/1b, lies about 190 km east of Aberdeen in the UK Central North Sea at a water depth of 90 m. The field, discovered in the mid-1990s, lies in a good quality Eocene reservoir and was developed via a subsea tieback to the Triton FPSO. Oil production is exported from the FPSO via shuttle tanker and gas exported via the SEGAL gas line. First production was achieved in April 2000.
The field lies at a depth of 6,800 ft and contains a light 39⁰API oil with an initial gas cap. There are five production wells supported by two water injectors and a regional aquifer. A number of well interventions and a sidetrack of B2 well have been executed between 2019 and 2022. A sidetrack of the B1 well is planned for 2024.
Dana Petroleum is operator of the field with 32.95% interest. Partners are Serica Energy (64.63%) and Waldorf Production UK PLC (2.42%).