DeepOcean has finished subsea construction and tie-in work at Anasuria Operating Co.’s Teal West oil and gas development in the central UK North Sea.

The field is producing through a subsea tieback to the Anasuria FPSO, initially via one producer well connected to 3 km of subsea flowlines. The full development will feature two producers and one water injector.

DeepOcean installed a flexible production riser and flowline, and the umbilical between the FPSO and the Teal West subsea xmas tree. The scope of work included protection of the flowline and umbilical, and commissioning of the newly in-place infrastructure.

The company used an ROV equipped with specialist tooling, to avoid the need for diver intervention. Its proprietary design tie-in tool can be used for diverless connections for high-pressure flange for pipes and valves.

Under a phased approach, managed from the Aberdeen office, subsea construction and tie-in activities were completed first, followed by commissioning using a second offshore construction vessel from DeepOcean’s chartered fleet.