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GEOTRU: The ‘Magic’ Of Electronics Free Downhole Monitoring

How our revolutionary GEOTRU technology enables monitoring at extremely high temperatures and provides data quality rivaling the most accurate tools in the industry.

Downhole Monitoring Success

Temperature, vibration, and time in situ are typically the main factors determining digital downhole monitoring success. As reservoir temperature and completion vibration increase, so does the stress applied to electrical components. The longer these components experience stress, the more likely they are to fail.

Our GEOTRU gauge platform is an innovative downhole gauge solution that features no electronics downhole and delivers exceptional long-term performance.

No-Electonics Downhole

Traditional downhole gauges contain electronics that degrade at elevated temperatures or where high vibration environments exist.

Our line of GEOTRU gauges differ from traditional electronic downhole gauges because they are truly electronics-free. GEOTRU gauges undertake all signal acquisition and processing at the surface, which means there is no requirement for downhole gauge electronics.

GEOTRU-Gauge-vs-Traditional-Electronics-Gauge-GEO-PSI

Figure 1: GEOTRU No-Electronics vs. Traditional Digital Gauge cross-section

Not only does this result in vastly superior reliability, but it also makes for significantly easier troubleshooting as all electronics components are housed in the T6 Interface Card at surface and can be easily serviced without the need for a pull & re-run.

GEOTRU gauges are available in variants up to 300°C, where the downhole TEC drives the temperature limitation, not the downhole gauge itself.

GEOTRU vs. High-Temp Alternatives

Before GEOTRU was commercialized, Bubble Tube and Vibrating Wire Piezometer, alternative non-electronic free downhole monitoring solutions, were utilized in high-temperature completions. While these solutions provided monitoring options for operators, both exhibit some problematic features.

Bubble Tube

Vibrating Wire

Problems Solved By GEOTRU

GEOTRU Installation Experience

Since commercialization, the GEOTRU No-Electronics platform has been steadily adopted as the preferred solution for high-temperature applications, or where life of well data flow is critical to operator success.

Listed below are a selection of installation locations, describing both asset and completion types.

Install Location

Asset Type

Completion Type

Monitoring Solution

United States

(1 Well)

Propane Storage

Observation

GEOTRU 125

Canada

(5 Wells)

Heavy Oil (SAGD)

Observation

GEOTRU 260

Canada

(9 Wells)

Heavy Oil (SAGD)

ESP

GEOTRU 300

Canada

(1 Well)

Conventional

ESP

GEOTRU 125

Papua New Guinea

(1 Well)

Geothermal

Observation

GEOTRU 300

Asia

(5 Wells)

Conventional

Free Flow

GEOTRU 260

Asia

(1 Well)

Conventional

ESP

GEOTRU 260

Asia

(4 Wells)

Conventional

Gas Lift

GEOTRU 200

Asia

(1 Well)

Conventional

Drill Stem Test

GEOTRU 200

Asia

(1 Well)

Geothermal

Wellhead Suspended

GEOTRU 300

Middle East

(1 Well)

Geothermal

Wellhead Suspended

GEOTRU 300

GEOTRU Data Example

The following plot showcases data from a high-temperature SAGD completion in Canada. The GEOTRU 300 solution was installed in 2017 and has successfully captured data in well conditions that average 225°C, with a 236°C maximum bottom hole temperature.

GEOTRU-Data-Sample-GEO-PSI

Figure 2: GEOTRU No-Electronics data sample 2017-2021

GEOTRU vs. Quartz

On a recent offshore Drill Stem Test a GEOTRU 200 was installed between two GEOQ Quartz Gauges. The premise of the installation configuration was to assess the performance of the GEOTRU solution against the GEOQ Quartz solution. The installation configuration is shown below for reference.

Figure 3: GEOTRU vs. Quartz Drill Stem Test installation diagram

At the completion of the project Houston based Oilfield Data Solutions independently assessed the quality of the GEOTRU data with the aim to ascertain whether data from a GEOTRU system could be used to adequately replace Quartz data when conducting typical Reservoir Engineering workflows.

The results concluded that GEOTRU and GEOQ exhibited good pressure and temperature data quality. When conducting Pressure Transient Analysis (PTA), both data sets materially delivered the same result for Permeability and Skin.

Conclusion

GEOTRU is another high-quality solution in the GEO PSI downhole monitoring toolbox.

There is no debate whether our GEOTRU gauges are the ultimate solution for long-term high-temperature and high vibration completions. Building upon the already extremely high success rates, the GEOTRU No-Electronics design delivers more success in challenging completion environments.

If you would like to know more about groundbreaking innvations like our GEOTRU gauge platform we encourage you to contact us!

GEOTRU-Solutions-Preview-GEO-PSI

GEO PSI Downhole Monitoring Solutions - No-Electronics GEOTRU

A detailed guide to the benefits, components, and common completion types for a typical GEOTRU downhole monitoring system.
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