Neptune to develop Seagull field off UK

Neptune Energy and partners plan to start production from high-pressure, high-temperature Seagull oil field in the Central UK North Sea by the end of 2021.

Neptune, the operator, said they have made the final investment decision and applied to the Oil and Gas Authority for development via tie-back to BP’s ETAP Central Processing Facility 17 kilometres north of the field.

Seagull, on Block 22/29C, holds proved and probable reserves of 50 million boe of oil and natural gas.

The field is expected initially to produce 50,000 boe/d, 80% oil.

Seagull plans to develop the field with as many as four subsea wells drilled through a new manifold. A new five kilometre subsea pipeline will connect the manifold with the Hebron pipeline system, which will carry produced fluids to the ETAP facility.

Seagull oil will flow from there through the Forties pipeline system to the Kinneil Terminal at Grangemouth, Scotland. Gas will move through the Central Area Transmission System to the processing terminal at Teesside.

Seagull interests are Neptune, 35%; BP, 50%; and Japan Petroleum Exploration Company Ltd, 15%.

Neptune acquired its Seagull interest from Apache North Sea Ltd. last year.

Apache announced the Seagull discovery in 2015, saying an appraisal well confirmed 672 feet of net oil pay in a 1,092-foot column in Triassic sands.

The well flowed at equipment-constrained rates of 8,700 b/d of oil and 16 MMcfd of natural gas with very low pressure drawdown.

Source: Oil & Gas Journal