Umbilicals offer a full range of solutions, which thanks to innovative designs, materials and state-of-the-art processes meet all of the demanding requirements of such applications. Umbilicals offer oil companies, contractors, engineers, installers and component manufacturers the following major benefits.
During the last few years, offshore oil extraction activity has been constantly increasing. New platforms are being continuously installed in different parts of the world and operate in deeper and deeper waters. The safe and efficient interconnection from the topside platforms and vessels to the well heads and pumps on the seafloor is necessary to transfer power and data, as well as hydraulic and other fluids to guarantee reliable oil extraction operations. The local generation of electric power and the subsequent distribution to various appliances achieves lower generation costs. In addition broadband communication systems are now an essential feature of the most modern communication and process control systems. Subsea Umbilicals, Raisers and Flowlines form this vital link among the various centres of operation. They must be able to withstand high mechanical and chemical stresses, high operating temperatures and pressures in order to ensure the continuous and reliable supply of services in the harsh environments below the sea.
Our umbilicals are designed to suit static and dynamic applications in water depths of up to 2,500 meters and are composed of any possible combination of hydraulic lines (thermoplastic hoses or steel alloy tubes), low-voltage electrical control cables, medium-voltage power transmission cores and optical signal components. Our plants are able to supply our umbilicals facility with “in-house” made electrical and optical cores and the high pressure thermoplastic hoses.
Prysmian has full capability to design the necessary subsea and topside ancillaries which are part of the complete umbilical system. The accessories are designed by our expert engineers to fit each application of our umbilicals.
Along with our state-of-the-art manufacturing facilities, Prysmian has comprehensive testing laboratories, which are able to fulfill any necessary qualification program, including full-scale dynamic testing equipments for our umbilical systems.
Prysmian is also able to provide total assistance during and after umbilicals installation, with a high qualified team of offshore technicians.
With a full package of possibilities, our design expertise and production processes can combine all elements in a single umbilical structure suitable for static and dynamic applications, by using thermoplastic hoses hydraulic lines, steel tubes hydraulic lines, electrical control cables, power cores and optical components.
Electro-hydraulic Umbilicals - Hoses
Designed and tested to withstand harsh environmental conditions in water depths as deep as 2,500 meters in both static and dynamic applications, these umbilicals comprise the following typical functions:
- High-pressure hydraulic control hoses;
- High-pressure chemical injection hoses;
- Electric control cable (optical fibre control core can be provided as an option, on demand).
Electro-hydraulic Umbilicals - Steel tubes
Designed for both static and dynamic applications, steel tube umbilicals (STUs) are becoming the preferred solution in many deep-water projects for hydraulic control and chemical injection lines for wellhead control systems. The STU technology provides enhanced response times and higher working pressures when compared to more traditional thermoplastic hose based designs. The STUs also prevent the permeation of fluids from the tube, particularly with injection fluids containing methanol. STUs use high-alloy stainless steel tubes with high mechanical strength and fatigue resistance, with an excellent corrosion resistance.
Power and Optical Umbilicals
Designed and tested to withstand harsh environmental conditions in water depths as deep as 2,500 meters in both static and dynamic applications, these submarine cables, which require a high level of structural resistance, comprise the following elements:
- Low or medium voltage power cores;
- Optical core.