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 permanent 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 is provided by the filler, which is used to centralize and anchor the conductor within the tubing.
Material specification (metallurgy, wall thickness, polymer encapsulation 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
- All cables are pressure tested prior to leaving the manufacturing plant, testing verifies cable armor integrity, this is in addition to the standard ‘Eddie Current Testing’ process
- 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 stress, thus ensuring reliability throughout the life of the well
Overview
Specifications
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