Oil and Gas Cable Competence Centre

Our expertise in working on oil and gas filled cables

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Oil and Gas Cable Competence Centre

For over 130 years, NKT has played a pivotal role in the evolution of insulated power cables, from oil and gas filled cables to the now dominating XLPE cables. While nearly all new cables make use of extruded insulation systems, the legacy paper-lapped oil and gas-filled cables still form a vital part of power grids globally, requiring specific technical expertise.

Recognizing the diminishing resources and know-how in the industry for these cables, NKT has established the Oil & Gas Cable Competence Centre (OGCCC). This center ensures the preservation and transfer of knowledge ranging from accessories and engineering of such systems to educating a dedicated pool of jointers in oil and gas-insulated cables.

At NKT we see ourselves as a full-service-provider. Our work does not stop after a cable system has been installed. We also take care of maintenance and repairs so that cable systems are up and running for decades. In case your cable(s) exhibit damage, leakage or electrical breakdown, we will do our utmost to return your system to operation with no delay. Should your legacy cable systems reach the inevitable end-of-life we can also take care of their decommissioning.

Oil is circulated under suitable pressure through ducts provided for such purpose. This oil supply and pressure is maintained through reservoirs kept at proper distances. The oil used is the same that is employed for impregnation of paper insulators.

Oil filled cables are mainly classified into three types:

Self-contained circular type oil cable (LPOF: Low pressure oil filled cable)
Self-contained flat type cable (ABPF: Armoured paper bly (lead) flat cable)
Pipeline cable (LPOF: Low pressure oil filled cable)

Gas filled cables are laid in steel pipes because they are exposed to high pressure. Pressurised gas is circulated around cables in an air-tight steel pipe. Such cables are capable of carrying higher values of load current and can operate at higher voltage levels.

Gas filled cables can be classified into two types:

External Gas Pressure Cable (lead sheath around each core, gas pressure outside insulation)
Internal Gas Pressure Cable (gas pressure penetrates insulation)

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Inspection and Maintenance

Upholding the integrity of your power infrastructure is paramount, and that's precisely why NKT is dedicated to the comprehensive inspection and maintenance of oil and gas-filled cables. These older cable technologies, filled with a fluid requiring pneumatic or hydraulic systems to maintain a constant pressure, require more attention than their modern, virtually maintenance-free XLPE counterparts.

NKT is dedicated to maintain expertise required to maintain these cable technologies by investing into knowledge transfer to the next generation of engineers and cable technicians while the know-how in the industry is slowly fading. Make proactive use of this know-how through inspection services in which our experts assess the condition of your assets and provide recommendations with regard to their maintenance to ensure they can reliably perform for decades to come.

Trust NKT to keep your oil- and gas-filled cables in optimal condition, safeguarding the seamless flow of energy through your network by prioviding expert and increasingly rare knowledge on those specific cable types.