Neptune lets vessel services contract for Cygnus field work

Neptune Energy let a 3-year vessel services contract with two 1-year extensions to Sentinel Marine to provide offshore support for Cygnus gas field in the UK southern North Sea.

The contract, valued at £10 million, will see Sentinel Marine continue to deploy its Multi Role, Emergency Response & Rescue vessel, Cygnus Sentinel, on the field. The vessel also will support an upcoming drilling campaign on Cygnus field. Neptune, on its website, said two wells expected to be drilled this year will help to maintain production from the field and offset natural decline.

Cygnus is the largest single producing gas field in the UK, typically exporting over 250 MMscfd of gas. Two drilling centers target 10 wells. Cygnus Alpha consists of three bridge-linked platforms: a wellhead drilling center, a processing-utilities unit and living quarters-central control room. Cygnus Bravo, an unmanned satellite platform, is about 7 km northwest of Cygnus Alpha.

Gas is exported via a 55 km pipeline. Cygnus connects via the Esmond Transmission System pipeline to the gas-treatment terminal at Bacton, Norfolk.

Neptune Energy is operator at the field with 38.75% interest. Spirit Energy holds 61.25%.