Deep water mooring
16Pages

Ropes for Deep Water Mooring Polyester rope for permanent moorings

Lankhorst Ropes develops and delivers world record breaking products to the offshore oil & gas industry. Applications range from Deepwater Mooring to Deepwater deployment. Utilising our proven rope technology we maintain our position as global leaders in the industry,

offshore 4 company information - Gama 98® and Cabral 512® - particle filter - sea-bed installation - cut resistant jackets (crj) - length - axial stiffness - fatigue life - length measurement - splicing & termination 12 shipment reels and cradles - rigging - storage capacity - packing and transportation 14 connection solutions 15 testing and joint industry projects (jips)

COMPANY INFORMATION Lankhorst Ropes is a WireCo WorldGroup brand. With 4,000 employees worldwide, WireCo WorldGroup is the world’s leader in manufacturing, engineering, and distributing wire rope, synthetic rope, specialized assemblies, wire products and electromechanical cable. With true global reach, WireCo WorldGroup can deliver the right products for your equipment and application no matter where your worksite might be. With more than 200 years of experience Lankhorst Ropes is an innovative company with fully equipped production sites, and R&D departments, located in Portugal and...

Brazil The production facility of Lankhorst Euronete Brasil covers around 12,000m2 in an 18,000m2 property in the industrial site of Queimados in Rio de Janeiro with easy access to the ports of Rio de Janeiro and Sepetiba. The company started production of Deepwater Mooring ropes in 2012. Capacity has been doubled in 2015 with the addition of a complete new production line using state-of-the-art machinery. Facilities The factories are dedicated to the design, production and testing of offshore mooring ropes and specialty products such as deep water installation ropes. Modern production and...

Key Projects Lankhorst Ropes have manufactured and supplied over 800,000 metres of deepwater mooring ropes for major projects such as: GAMA 98® • Tahiti spar for Technip (Operator: Chevron) Thunder Hawk semi-submersible for SBM Atlantia (Operator: Murphy) Cascade and Chinook FPSO for APL/BW Offshore (Operator: Petrobras Americas) Lucius spar for Technip (Operator: Anadarko) Goliat FPSO for Eni Norge Heidelberg spar for Technip WIDP for Dana Petroleum Aasta Hansteen spar for HHI-Technip Appomattox semi-submersible for Shell (Operator: Anadarko) (Operator: Dana Petroleum) (Operator: Statoil)...

offshore l.ankhorst Ropes design Lankhorst Ropes have two rope constructions within their product portfolio for Deepwater Mooring applications. GAMA 98® GAMA 98® polyester ropes are made from high efficiency subrope cores laid parallel within an outer braided jacket. Each subrope is monitored during rope manufacture to ensure all subropes have equal tension and length. Typically, GAMA 98® ropes include 7 to 18 subropes, each subrope being of a long lay length 12 x 1 construction, which gives a 100% torque free rope. DNV Approval of Manufacturer Certificates DET NORSKF. VFRJTAS CABRAL 512®...

Table of rope properties of GAMA 98® and CABRAL 512 Particle Filter Filter elements are included between Diameter Mass in Air* Mass in Water* [mm] Kg/m Kg/m 450 500 600 700 800 900 1,000 1,100 1,200 1,250 1,300 1,400 1,500 1,600 1,700 1,800 1,900 2,000 2,100 2,200 2,300 2,400 2,500 jacket and load bearing subropes. They are effective in filtering out particles greater than five microns whilst allowing free flooding of the rope. Seabed particles such as sand or clay in some conditions can cause damage to the subrope yarns when cyclically loaded. The fi Iter acts as a barrier to stop...

Cut Resistant Jacket (CRJ) Polyester mooring rope systems operating in some offshore locations can be at risk from damage through contact with fish trawling wire ropes. Lankhorst Ropes have developed cut resistant jackets using Dyneema® fibre especially for two systems in Norwegian waters. The number of polyester mooring systems are rapidly increasing and there is always a risk of failure due to external damage. Cut resistant jackets will gradually become more common. Lankhorst Ropes can now offer a proven cut resistant jacket for fibre ropes. Lankhorst Ropes is committed to develop jacket...

Axial Stiffness Stiffness is normally divided into two definitions, static stiffness and dynamic stiffness. Static stiffness is used to determine the extension of the rope from first order motions and calculate the offset of the vessel. Dynamic stiffness is used to calculate the peak loads in the mooring lines during second order motions of the vessel. GAMA 98® is the stiffest rope construction currently available in the market for deepwater mooring applications, requiring less constructional extension due to bedding in and lower overall elastic extension resulting in smaller platform...

Length Measurement Ropes for deep water tethers are manufactured under a machine tension of approximately one tonne back tension. LEP have installed a unique Length Measuring System (LMS) for length measurement under a controlled tension. The rope is pre-tensioned to 1% Minimum Breaking Load (maximum 30 tonnes) for length measurement in 75m increments. Proto-type testing typically starts from the same reference tension of 1% Minimum Breaking Load. Length accuracy is achieved with a laser gun and mirror which is calibrated to 75m ±3mm. The rope is marked at each 75m increment and the marks,...

SHIPMENT REELS AND CRADLES Lankhorst Ropes supply deepwater tethers spooled onto shipping reels/cradles that are designed to meet project specific requirements. Reels and shipping cradles are typically designed to DNV Rules for Planning and Execution of Marine Operations and/or Noble Denton General Guidelines for Marine Transportations, as well as to customer and installation contractor specific requirements. Ropes can be spooled directly onto shipment reels from the production line with a back-tension of 5Tf on all rope layers. This will eliminate the rope burying into the rope layers...