XT - Extreme Temperature Well Monitoring System

 

With the Zenith “HT” High Temperature well monitoring system already extending existing downhole gauge temperature limitations to 260°C, the trailblazing Zenith “XT” Extreme Temperature well monitoring system introduces new state-of-the-art well technology to further push downhole temperature monitoring boundaries beyond 400°C.

A new pressure sensor was developed for this application, along with an instrument cable capable of handling the extreme temperatures. Zenith developed a new and unique insulation technique, resulting in one of the only permanent 500°C downhole cables in the world.

Greg Davie, Managing Director, believes the new XT well technology will dramatically improve the reliability of monitoring high temperature oil wells in the future: 

“Zenith have succeeded in extending existing well technology limitations and gone on to develop a 400°C pressure sensor with fit-for-purpose cable, housings and connections. A big hurdle in testing the technology was that a calibration system that could operate at those temperatures did not exist — we overcame this by developing a precision 5,000 psi 500°C computer controlled calibration system.”

Zenith’s first 400°C prototype XT sensor — from a well installed in July 2009 — is still alive with further XT Extreme Temperature monitoring systems seen to operate reliably and accurately at over 450°C.
 
  • Overview
  • Features & Specs
  • FAQs
  • Case studies
  • Resources

Overview

Continuous well data at extreme temperatures over 400°C

Pressure data is of primary importance in understanding reservoir and well performance. Rated to 400°C, Zenith’s XT (extreme temperature) well monitoring system reliably delivers continuous downhole pressure and temperature information in extreme temperature environments.

Increased system reliablity

With no downhole electronics, system reliability and runlife are maximised in challenging, extreme temperature environments.

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Features and specifications

XT system features

  • Uses an instrument line to communicate to surface
  • Mounted production tubing in the annular space
  • Calibrated by Zenith during manufacture

XT system options

The Zenith XT gauge can be configured to monitor:

  • Annulus or production pressure
    • Monitor well draw-down and assess reservoir performance
    • Protect from pump off, free gas and excessive well draw-down
  • Annulus temperature
    • Monitor well fluid temperature
    • Protect from excessive gauge temperature

XT system specifications

  • Temperature range: 0-400°C, 0.5°C resolution with 2.0°C accuracy
  • Pressure range: 0-5,000 psi, 0.1 psi resolution with 0.25% accuracy

Related articles

 

In order to assist you in finding the solution to best fit your requirements, please see the following links to related product and service information throughout our website. For documentation and downloads, please visit the Resources tab.

 

 

 

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Case studies

 

Proven Gauge Reliability

icon Documented survivability & operation in high temperature conditions (requires login)

 

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more information

Document archive

 

Data Sheets

pdficon_small XT (Extreme Temperature) Well Monitoring Data Sheet

 

News Articles

Pioneering Sensor Technology to Operate at Extreme Temperatures

 

Technical Papers

icon Exciting New Technology for Monitoring HT Wells (requires login)

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