Portugal: Lankhorst Manufactures Tethers for Subsea Umbilicals and Rises

Rope construction and performance that has set the standard for deepwater moorings, such as the Lucius Spar, is now being applied by Lankhorst Ropes Offshore Division to the supply of synthetic fibre rope tethers for umbilicals and risers.

The high modulus polyethylene (HMPE) rope uses a Gama 98® construction to provide the strength and mechanical performance expected of these long term tethers.

The tethers are designed to hold the risers and umbilicals in position, connected to subsea production systems such as well manifolds, wellheads, Christmas trees and well jumpers. Each tether is customised through its Gama 98® rope construction, protective jacket and polyurethane coating, together with ROV handling points for ease of installation and maximum service life.

The riser and umbilical tethers are manufactured at the deepwater rope production facility at Lankhorst Euronete Portugal SA. In addition to industry leading, rope manufacture and test facilities, the company’s rope engineering team is able to provide comprehensive technical support at every stage of tether production.

During tether installation, Lankhorst is able to ensure that experienced service engineers are on hand to monitor on-site handling and installation, as required.

“Riser and umbilical tethers are very technical products that fit well with our rope engineering expertise developed over many years in some of the most demanding deepwater mooring applications,” says Sérgio Leite, technical director, Lankhorst Ropes Offshore Division.

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Lankhorst Ropes, March 19, 2012