Equinor lets EPCI contract for Eirin gas field subsea tie-back

Equinor has awarded Ocean Installer AS an engineering, procurement, construction, and installation (EPCI) contract for the North Sea Eirin gas field subsea tie-back development.

The award also constitutes an option for a new gas export solution from Troll B via the existing Kvitebjørn export pipeline.

The scope covers installation of structures, flexibles, umbilical, seabed rectification, tie-ins, and commissioning. It also includes design, fabrication, and installation of glass reinforced plastic (GRP) covers and spool bringing gas volumes to the European market.

Engineering will begin immediately and both projects are expected to be completed by 2025.

Eirin is a gas field in the North Sea that was originally discovered in 1978 and that now will be developed with a 2-slot template with an integrated manifold where the well stream will be connected to the existing Gina Krog platform through a 9.5-km flexible flowline and integrated service umbilical (OGJ Online, Sept. 15, 2023).

The optional scope on Troll B includes a new 2.5-km flexible flowline from an existing pipeline end manifold (PLEM) on Troll B to a new PLEM close to the Kvitebjørn hot-tap. A rigid spool will also be fabricated and installed between the new PLEM and the Kvitebjørn hot-tap.