TEC Cable
Tubing Encapsulated Cable
High-Performance Tubing Cable (TEC Cable)
Characteristics of Tubing Cable (TEC Cable):
Our TEC cable provides continuous power supply and high-fidelity communication for downhole logging tools, sensors, and instruments, suitable for oil, gas, and geothermal wells in complex environments. Unlike conventional logging cables, the core of the TEC cable uses precision-insulated conductors (ranging from 8 AWG to 18 AWG, available in solid or stranded configurations) and can integrate optical fiber units for hybrid data transmission.
Key Specifications
Conductor AWG
18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8
Conductor O.D. (mm)
1.02, 1.15, 1.29, 1.45, 1.63, 1.83, 2.05, 2.3, 2.59, 2.9, 3.25
Solid Bare Cu DC Resist. (Ω/m)
21.4, 16.9, 13.5, 10.6, 8.45, 6.69, 5.31, 4.22 3.34, 2.65, 2.1
Stranded (7 strands) Bare Cu DC Resist. (Ω/m)
21.8, 17.3, 13.7, 10.9, 8.62 ,6.82, 5.43, 4.3, 3.41, 2.71, 2.14
ISO 9001 Certified
CNPC & Sinopec Approved
Global Export Ready
Custom R&D Available
Technical Description
- Robust Five-Layer Construction:
- According to our detailed technical specifications, the TEC cable employs a proprietary five-layer composite structure:
- Conductor Layer: High-conductivity copper wires with coatings customizable for HPHT (high pressure, high temperature) environments (bare copper, tinned, silver-plated, or nickel-plated).
- Insulation Layer: Made of advanced fluoropolymers (FEP, PFA, ETFE, ECTFE), offering excellent dielectric properties and high-temperature stability.
- Filler Layer: Uses PFA, FEP, or Polypropylene materials to fill gaps, ensuring a perfect concentric circular profile and preventing the outer protective steel wires from compressing the fragile internal insulation under extreme downhole pressures.
- Sheath / Armor Layer: High-strength steel wire armor (316L stainless steel, Alloy 825, or Alloy 625) with excellent tensile strength and impact resistance, effectively preventing downhole crushing and breakage.
- Final Encapsulation Layer: The outer jacket possesses superior sealing performance, protecting against water, oil, and hydrogen sulfide (H₂S) ingress into the internal core.
- Deployment and Supply Capabilities:
- Our TEC cable offers excellent deployment flexibility. It can be securely strapped to the exterior of production tubing or casing, or installed as a free-hanging (self-supporting) cable inside the production casing. We supply our rugged armored tubing cables in continuous reel form, with lengths ranging from 5,000 feet to 35,000 feet, safely wound on high-quality wooden or steel spools, ready for immediate deployment at the rig site.
- Applications and Solutions:
- Our tubular armored cables are widely used in downhole monitoring, powering downhole equipment, underground power distribution, substation connections, as well as high-precision pressure sensing and data acquisition. Whether you need standard downhole logging cables, specialized HPHT logging cables, or highly corrosion-resistant acid gas well cables, our tailored solutions ensure long-term reliable operation.
- Why Choose Us?
- We don't just supply standard products. We also offer customized armored TEC cable solutions based on your well's specific bottom hole temperature (BHT), pressure, and hydrogen sulfide (H₂S) / carbon dioxide (CO₂) concentrations. Our engineering team provides precise current derating calculations and material selection support, ensuring that your high-temperature well cables achieve optimal service life even under extreme downhole conditions.
Application Scenarios
Downhole Logging Operations
Designed for wireline logging tools in oil & gas wells
Deep Well Exploration
Suitable for extreme depth and high-pressure environments
Perforating Operations
Pump-down and wireline perforating in production wells
High-Temperature Environments
Stable performance in geothermal and HPHT wells
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Conductor AWG | 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8 | -- |
| Conductor O.D. (mm) | 1.02, 1.15, 1.29, 1.45, 1.63, 1.83, 2.05, 2.3, 2.59, 2.9, 3.25 | -- |
| Solid Bare Cu DC Resist. (Ω/m) | 21.4, 16.9, 13.5, 10.6, 8.45, 6.69, 5.31, 4.22 3.34, 2.65, 2.1 | -- |
| Stranded (7 strands) Bare Cu DC Resist. (Ω/m) | 21.8, 17.3, 13.7, 10.9, 8.62 ,6.82, 5.43, 4.3, 3.41, 2.71, 2.14 | -- |
| Rec. Max Current Capacity | 6A, 8A, 10A,13A, 15A, 18A, 22A, 26A ,32A ,38A, 45A | -- |
| Recommendation for Harsh Environments | ≤ 150°C (Standard Geothermal), Tinned Copper./ 150°C ~ 200°C (HPHT Standard), Silver-Plated Copper./>200°C & High H₂S Resistant, Nickel-Plated Copper. | -- |
Standards & Certifications
ISO 9001
Quality Management System
ISO 14001
Environmental Management
ISO 45001
Occupational Health & Safety
Product Inquiry
Our team responds within 24 business hours
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