Special Offshore Cables 0704 - Nexans

1 Special Offshore Cables Oil & Gas (O&G) Special Fibre Optic Telecom Cables Introduction Nexans Norway AS designs The main products and areas and manufactures a wide of applications are: range of Special purpose Cables and umbilicals fibre optic submarine through its product divi- Cables sions, either as individual fibre elements into products or composite struc- composite power and fibre tures taking advantage of optic Cables to enable all highly specialised tech- communication of voice, nologies available within data, video, broadcast over the company in order to long distances (>300 km). offer the customers optimum electrical umbilical Cables solutions. with signal and power elements for connecting Fibre optic submarine cable The Special telecom Cables oil platforms to subsea are directed to serve applica- templates over long tion areas in need for highly distances (>100 km) and power elements feeding In order to respond fully to dedicated cable or umbilical down to water depth remote equipment with customer needs, many of the designs, serving multiple > m.

2 More than 1 Mwatt) cable or umbilical products functions like: dynamic umbilicals for Air-gun umbilicals and are supplied with acces- operation of Remotely lead-ins for towed systems, sories, comprising termina- communication Operated Vehicles (ROV) and bottom laid Cables for tions, cable joints for repair signal transmission for containing signal elements 4-D seismic acquisition or maintenance purposes, control and data (pairs/quads, RG coax or submarine Cables for weak links, hang-off for oil electrical power transmis fibre optic elements) permanent underwater platform terminations and flex- sion to remote equipment together with electrical installations for monitoring ible riser systems for use from air or fluid power supply and control purposes sea bed to floating structures.

3 Through plastic flow lines (oceanographic, telemetry of ship activity, defence In addition Special purpose systems etc.) telecom elements can be topside Cables (fibre optic incorporated into large or coax) for interplatform combination umbilicals wiring of communications together with steel tubes or systems having fire resistant high voltage conductors. Veslefrikk deep catenary or mud resistant characte- cable ristics We also offer design engi- Optical Ground Wire neering services to fully (OPGW) Cables , providing undertake turnkey responsi- normal electrical functions bility for cable and umbilical and large transmission systems including installation, capacity for data and which can be offered in addi- communication requirements tion to our contracting activity.

4 3. Oil & Gas (O&G) Special Fibre Optic Telecom Cables Some of the specific capabili- its dedicated tools and instru- new solutions to either ties are represented by the mentation package requiring improve existing applications ability to manufacture long a varied combination of or to enable new areas to be lengths of unspliced Cables umbilical elements. Further, served reliably by cost or umbilicals. To make up as operational range of ROVs efficient designs. "infinite" cable lengths tech- are extended, new require- nology has been developed ments to armour and outer We would like to work to join long unspliced diameter call for constant closely with our customers segments to very long final improvements and new to take full advantage of lengths (100 - 300 km).

5 Designs. common skills, as we believe Special demands requiring Further, with a highly trained The same applies in almost Special designs and solutions engineering staff, Cables or every area, because new are best served with both umbilicals can be designed Special demands requires sides fully understanding and manufactured to meet new Special solutions. needs and technical alterna- customer specifications. tives available. Through development of new This is reflected in a supply technologies qualified through Our capabilities are shaped record of more than 100 extensive test programs by your Special needs. different umbilical designs for Nexans Norway AS aims at ROVs, many supplied for being in the forefront capable highly specific projects, with of serving the customers with Nexans Norway Rognan plant 4.

6 Oil & Gas (O&G). ROV Cables phase power supply (100- respect to materials and 150 HP), instrumentation processing, have resulted in conductors and a laser extended operational condi- welded steel tube (FIMT), tions and increased lifetime for monitoring and video of ROV Cables . Loose optical transmission. Typical depth fibres in a laser welded metal ratings are 2000 to 4000 m. tube (FIMT) have proven both in laboratory testing and field DW Umbilical use to provide reliable com- is an umbilical developed for munication with the vehicle. Steel armoured ROV cable deepwater applications rated The metal tube ensures a to 6000 m. This is a light robust protection of the weight aramid armoured optical fibres, and the cable with an outer diameter stranded configuration intro- Nexans Norway AS supplies support, also referred to as of 39 mm.

7 The cable includes duces sufficient strain relief for umbilicals to the majority of FIMT (Fibre In Metal Tube), elements for three-phase the optical fibres so as to the standard ROVs such as for monitoring and video power supply (typical 100 avoid fatigue failures. Solo, Scorpio, Scorpion, Sprint, transmission. The tether is HP), two instrumentation The umbilical cable designs Voyager, Seaowl, Seahawk, armoured with aramid yarns conductors and a laser of Nexans Norway feature Seatwin, Trojan, Examiner, and has a TPR (Thermoplastic welded steel tube (FIMT), for cable core compactness, Triton, Triton Xl, Demon, MRV, Rubber) outer sheath. Typical signalling. Results of proto- efficient element lay-up and Recon, Boxer, Hercules, SCV, outer diameter is 30-45 mm.

8 Type testing show that the emphasises overall dimen- Innovator, Magnum, cable is well suited for sion. Steel wire armoured Millennium and others. Steel Armoured Umbilicals dynamic deep-water applica- umbilical Cables are avail- are umbilicals designed for tions. The mechanical termi- able for water depths down We also supply umbilicals for vehicles applied for tasks nation strength is higher than to 5000 m. For deeper Special underwater vehicles such as trenching, mainte- 350 kN. waters aramid yarn armoured like the Capjet, Flexjet, nance, drill support etc. solutions are applicable. Gater, Marlin, Mako, PL2, Typically the cable has a two Improved technology ST200 and other trenching or three layer torque balanced Nexans Norway's continuous machines and plows.

9 Steel wire armouring, and efforts in product develop- includes elements for three- ment and improvements with Tethers are neutral buoyant Cables connecting the ROV to the TMS. These Cables typically include a three-phase power supply (100 150 HP), instrumentation conductors, and a laser welded steel tube containing optical fibers which are encased in a jelly giving internal protection and Tether cable Deep water umbilical cable 5. Oil & Gas (O&G). Platform/Umbilical Cables Electric and electro-hydraulic The umbilicals are used to Power cores, signal and fibre control umbilical monitor position and functions optic elements, steel tubes For cost efficiency and of such equipment as well- and/or thermoplastic optimum utilisation of hydro- head valves to signal the hoses/composite materials, carbon reservoirs, present operations for opening or are elements which may be techniques for oil and gas closing, and to provide used in various combinations production require under- power for operation.

10 Determined by the service water installations, producing requirements. The umbilicals to existing platforms. Subsea The applicable subsea control may be delivered with or umbilicals provide the electric and operational systems without armouring according and/or hydraulic power and determine the characteristics to the customer's needs. controls necessary to operate of the umbilical, such as size, subsea installations remotely number of elements and the The following umbilicals from Offshore platforms or required standards. comprise electrical and/or onshore facilities. optical elements: Conoco - Heidrun Statoil - Norne Shell - Mars Mensa Nexans Norway supplied the electrical umbilical to Shell's Mensa project in the Gulf of Mexico. At a depth of 1647 Statfjord Satellite electrical umbilical m and a distance of 102 km between the platform and the The outer corrosion protection three gas wells, this umbilical consists of PP yarn filled with represented a milestone when bitumen compound.