Our technologies encompass stand-alone innovative completion products that can be combined to form systems for use in conventional and unconventional wells.

Tendeka CBM Water Monitoring Systems

Tendeka offers a retrievable completions system with real-time multizone aquifer monitoring.

The Tendeka Guardian-ZoneWatch system is a multizone monitoring system that eliminates the need for drilling multiple test wells to assess aquifer levels. 

The system combines swellable packers for zonal isolation with Tendeka’s Guardian permanent electronic monitoring system to provide high resolution monitoring of aquifer pressures and temperatures. The retrievable swellable packers break the aquifer monitoring wellbore into multiple zones allowing for independant measurements from regions within the aquifer for accurate monitoring of the aquifer. 

Tendeka's electronic monitoring system consists of a series of dual redundancy down hole sensors used to measure, record, and transmit pressure and temperature data to monitor for aquifer fluid pressures. 

The system includes quartz pressure sensors, mounted externally onto a port in the tubing wall just above a swellable elastomer, for measurement of tubing pressure and annulus temperature. A tubing encapsulated conductor (TEC), is attached to the gauge from the surface, and strapped to the tubing, which powers the gauge and transmits data back to the surface. A surface acquisition unit capable of receiving, storing and forwarding the acquired data completes the system. 

Whether your focus is to prevent acquifer fluid losses, production surveillance, diagnostic downhole issues or designing production enhancements, with Tendeka’s Guardian-ZoneWatch system you can make informed decisions. 

The Guardian-ZoneWatch system can be easily retrieved upon abandonment of operations or for replacement of system components.

Features and Benefits

  • Simple design with high accuracy pressure readings for accurate aquifer fluid monitoring.
  • Small tubing size (upscaleable for larger installations)
  • Multiple level monitoring in single wellbore
  • Simple single string deployment with multiple level monitoring in single wellbore
  • Fluid sampling possible from lowermost zone
  • Retrievable system for gauge replacement or abandonment
  • Simple and intuitive user interface enabling faster system calibration and configuration

Reservoir Monitoring

Whatever your monitoring focus, the insights gained from Tendeka’s powerful monitoring systems allow you to make far-reaching decisions that help manage reservoir performance, enhance production and increase overall recovery.


  • Reservoir description
  • Reservoir management
  • Monitoring of inflow performance and skin
  • Production allocation
  • Injection allocation
  • Gas lift monitoring and optimization
  • Well integrity and equipment monitoring
  • Permanent or intervention based monitoring
  • Retrofit of failed permanent gauges


  • Electrical downhole monitoring
  • Point and distributed fiber optic downhole monitoring systems
  • Wireless downhole communication

Zonal Isolation

Whether you seek long-term compartmentalization of producing zones, or pressure sealing during fracturing operations, look to Tendeka to meet all your zonal isolation demands.


  • High pressure annular isolation in open-hole multistage fracturing to ensure fluid diversion.
  • Wellbore compartmentalisation for optimal performance of inflow control completions
  • Effective annular isolation in multi-horizontal wells to enable effective interval control and zonal shut-off
  • Isolation of formations within the reservoir to eliminate problem zones
  • Provides annular barrier to isolate the reservoir from the well annulus as cement integrity assurance or in side-tracked wells

Download Tendeka's swellable packer app to simulate swell behaviour under various fluids and wellbore conditions

SwellGen app


Please get in touch, one of our experts will contact you to answer any questions.

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We have a global network of offices:

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+1 832 827 4211

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+44 1224 238 950

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+44 1224 238 950

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+603 9207 9797

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+44 1224 238 950