Geothermal High-Temperature Monitoring

Field-Proven Distributed Fiber Optic Sensing (DFOS) Cabling

  • High-Temperature Fiber Optic Cable Systems (up to 300 °C)
    Retrievable fiber-optic sensing systems purpose-engineered and field-proven over more than three decades, representing one of the most reliable and robust deployment methodologies available for downhole fiber-optic sensing.
  • Intervention-Free Fiber Replacement Architecture
    Highly reliable deployment technologies that allow fiber replacement or upgrade without well intervention or disturbance, enabling long-term system resilience and future-proofing of the monitoring infrastructure.
  • Geothermal-Qualified Optical Cables & Encapsulation
    Purpose-engineered optical cables and encapsulation systems designed for sustained exposure to geothermal operating conditions, including elevated temperatures, mechanical loading, and chemically aggressive fluids.
  • Distributed Strain Sensing (DSS)
    Strain-rated optical fibers qualified for continuous operation up to 300 °C, enabling long-term monitoring of downhole mechanical behavior.

Multi Drop Gauge Systems

  • RFT™ Downhole Gauge Systems (300 °C Rated)
    RFT™ (Resonant Frequency Transducer) gauges are qualified for continuous operation up to 300 °C, providing high-accuracy pressure and temperature measurements for geothermal reservoir characterization, injectivity testing, production diagnostics, and long-term monitoring.
  • Key capabilities include:
    • Continuous high-temperature operation up to 300 °C
    • High-resolution pressure and temperature measurement with excellent long-term stability
    • Minimal drift in high-pressure, high-temperature environments
    • Proven performance in permanent geothermal installations
    • Seamless integration with distributed sensing and surface acquisition systems

High Denisty Temperature Monitoring

  • PEP™ (Precise Engineered Polymer) systems are high-density, conductor-based thermocouple assemblies designed for continuous temperature monitoring up to 300 °C in extreme downhole environments.
  • PEP™ systems are used extensively in high-temperature reservoir monitoring applications, providing reliable, depth-distributed temperature measurements where fiber-based or electronic sensing alone may be insufficient or where redundancy is required.
  • Key advantages include:
    • High-density temperature measurement along the wellbore
    • Continuous operation up to 300 °C
    • Robust polymer encapsulation engineered for thermal cycling and mechanical loading
    • Proven reliability in long-term, permanent geothermal installations
    • Complementary deployment alongside DFOS and RFT™ systems
    PEP™ thermocouple systems provide precise thermal profiling for reservoir performance evaluation, injectivity monitoring, heat sweep analysis, and completion diagnostics.

Acquisition Systems & Advanced Data Processing

  • Distributed Temperature Sensing (DTS)
    Thermal profiling for inflow/outflow identification, heat-sweep monitoring, and reservoir performance evaluation.
  • Distributed Acoustic Sensing (DAS)
    Real-time insight into flow dynamics, fracture activity, and mechanical integrity along the entire wellbore.
  • Distributed Acoustic Sensing (DSS)
    Real-time insight into atrina nd mechanical dynamics, fracture activity, and mechanical integrity along the entire wellbore.
  • PSSP-AI™ (Precise Signal Stream Platform – AI)
    • PSSP-AI™ is a cutting-edge, physics-based machine-learning platform delivering advanced, real-time quantitative flow intelligence at 1 m resolution along the full wellbore. The platform provides phase-specific flow characterization (water and gas), velocity profile indexing, and continuous insight into downhole mechanical and hydraulic behavior through real-time completions monitoring—presented in an easily digestible operational format.

Surface Acquisition & Edge Systems

Precise supplies and integrates surface acquisition systems matched to geothermal operating conditions and data volumes, including:

  • Industrial DAS and DTS interrogators
  • Optical switching and WDM architectures
  • Time-synchronized acquisition and data buffering
  • Hardened enclosures for remote or high-temperature sites

Local edge compute enables real-time event detection, data quality control, and secure transmission to centralized platforms.

Analytics & Interpretation

All geothermal monitoring packages are supported by PSSP-AI™, providing:

  • Real-time monitoring and alerting
  • Advanced signal processing across temperature, acoustics, strain, and pressure
  • Event detection, trending, and historical analysis
  • Integration with operator workflows and enterprise systems

Services & Deployment Support

  • System design and well integration
  • High-temperature cable selection and deployment planning
  • Downhole and surface system installation and commissioning
  • Ongoing monitoring, diagnostics, and interpretation
  • Long-term lifecycle and data management support

Rather than offering standalone tools, Precise delivers integrated geothermal monitoring packages that combine downhole sensing, surface acquisition, and advanced analytics into a single operational framework.