Hughes Subsea Takes Center Stage in North Sea FPSO Topsides and Subsea Operations
Posted 29/11/2023 11:52
Hughes Subsea, a UK-based subsidiary of the OEG Group, has secured a contract to provide daughter-craft diving services for a floating production, storage, and offloading (FPSO) vessel operating in the North Sea. The FPSO, located in the Anasuria cluster, is overseen by the Anasuria Operating Company (AOC), a jointly-controlled entity by Ping Petroleum and Hibiscus Petroleum's Anasuria Hibiscus UK.
In a month-long campaign, Hughes Subsea played a crucial role in supporting mooring chain change-out, executing sea-chest blank installations and removals, and conducting a comprehensive inspection program for the FPSO Anasuria, positioned 175km east of Aberdeen. Additionally, a rigging team was mobilized to support topside operations.
Bob Kingdom, Senior Project Manager at Hughes Subsea, commended the team's "can-do" attitude and efficient delivery. The project involved effective communication and collaboration among all vendors, contributing to its success.
During the operational phase, Hughes Subsea mobilized the dive intervention craft, Hughes Hunter, and the tender vessel, Cardhu, onto the Normand Frontier. A 45-member project team was accompanied by vessel owners providing work-class remotely operated vehicle (WROV) and survey support. Independent telemetry systems facilitated real-time camera feeds from both the diver and topside team, distributed around the vessel.
Hughes Subsea's sister company, Fern, provided radios to all project vessels, and a Starlink feed was installed for optimized information distribution. The team, with assistance from the Normand Frontier, deployed anode skids and concrete mattresses in addition to the FPSO scope.
Diving operations were conducted using nitrox to maximize productivity, ensuring extended bottom times and reducing the required personnel. The project was completed efficiently, safely, and ahead of schedule.
Graeme Shepherd, Project Manager at Anasuria Operating Company Limited (AOC), emphasized Hughes Subsea's pivotal role in the mooring chain change-out and associated topside and subsea work scopes, integral to AOC's ongoing asset life extension program aimed at prolonging the FPSO's operating life.
This achievement follows Anasuria Operating Company's appointment as the installation and pipeline operator for the Anasuria cluster and FPSO in the North Sea over a year ago. The cluster comprises a 100% interest in the Anasuria, Teal, Teal South, and Guillemot A fields, along with a 38.65% interest in the Cook field.
Hughes Subsea has secured several contracts this year, including a deal with 50Hertz Offshore for boulder removal services on the cable route of the Ostwind 3 project in the Baltic Sea and/or North Sea.