Self-supporting Downhole Cable | NBG Fiber Optics



Self-Supporting Downhole Cable

A Downhole Cable for Harsh Environments

The intelligent design of the Self-Supporting Downhole Cable (SDC) is the standout characteristic of this fiber optic cable. The helical shape of the FIMT (Fiber in Metal Tube) locks the EFL in place; this is true even for long vertical installation lengths, where fibers in straight cables usually fall because of gravity.

The outer stranding wires are made of highly corrosion-resistant steel grades, guaranteeing the fiber optic cable’s performance and flexibility even in the harshest environments. In addition, the design allows for a separation between the optical fiber and potential copper wiring, making it perfect for integration in hybrid cables.

The downhole cable is designed for the harsh surroundings of the Oil & Gas Industry, providing expert Distributed Temperature Sensing (DTS) and Distributed Acoustic Sensing (DAS). Contact one of our experts today if the Self-supporting Downhole Cable is the product you need for one of your projects. Every one of our cables is customizable to the precise requirements of every challenge.

  • 05-Downstream Anti corrosive
  • 24-High Strenght High crush resistance
  • 03-Upstream Designed for downhole


Product abbreviation SDC
Cable usage Data Transm. & Sensing
Total outer diameter 8.50 mm
Approx. Cable weight 317 kg per km
Excess Fiber Length (EFL) Exceeds 0.6 %
Operational temperature range -60°C up to +800°C
Maximum continuous length Up to 15 km
Ultra-High tensile strength > 42 kN
Ultra-High crush resistance Tests acc. latest standards
Cable material High anti-corrosive mat.
High corrosive resistance Made of Alloy material
Perfect usage for Vertical installation

All values, product specifications and other given data are subject to change without notice to improve reliability, function, design or otherwise. Information contained in this data sheet are up-to-date as at the date of issue. As NBG cannot control or anticipate the conditions under which this product may be used, each user should review the information in specific context of the planned use. To the maximum extent permitted by law, NBG will not be responsible for damages of any nature resulting from the use or reliance upon the information contained in this data sheet.

Product overview created by Patrick Weissinger – 21.03.2019


Frank Hieden

Fiber Optics Solution Specialist.
“Challenge me with your project”

How can we support your FIMT project?

We are experts in:

Get the latest fiber news.

Sign up to our newsletter!

ISO 9001


ISO 14001


ISO 45001