Electrical Downhole Cable

Weatherford’s electrical downhole cable provides a reliable pathway between the in-well pressure and temperature gauges and surface data acquisition unit for both telemetry and power.

The electrical downhole cable consists of four main elements plus optional encapsulation providing additional mechanical and chemical protection. Tubing encased cable consists of a seven stranded tinned copper core with an outer insulating coat, additional insulation if proved by the filler, which is used to centralize and anchor the conductor within the tubing.

Material specification (metallurgy, well thickness, polymer selection) of each component is important to ensure the cable is matched to well conditions ensuring reliability and performance is maximized.

Applications

Weatherford’s electrical downhole cable is used in conjunction with a range of permanently installed electronic downhole pressure and temperature sensing tools.

Features, Advantages and Benefits

• Splice free lengths >30,000 ft. (>9144 m.)
• Tubing material: 316L and Incoloy® 825
• Encapsulation available in a range of polymeric materials to suit various well conditions
• Stranded core maximizes power and telemetry transmission characteristics
• Process enhancements such as improved core concentricity, diameter tolerance and surface finish improve reliability
• Installation technique isolates and protects the cable from cable stress, thus ensuring reliability throughout the life of the well
  

Overview
Specifications