Downhole Gauge for Pressure, Temperature, and Sensor Data | Schlumberger
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Signature CQG

Crystal quartz gauge

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Highest-resolution, most-accurate pressure measurements available

You’ll get market-leading, consistently accurate pressure measurements with the Signature CQG crystal quartz gauge. By measuring pressure and temperature at a single point with a single quartz crystal, the Signature CQG gauge significantly reduces thermal effects. Small residual effects are further minimized with real-time dynamic compensation. This unique capability also speeds pressure response to truly capture dynamic downhole conditions.

proprietary ceramic electronics technology
The Signature CQG gauge measures pressure and temperature simultaneously within the same crystal in a single quartz transducer. This eliminates temperature lags and discrepancies that can result from thermal response.

Same-point pressure and temperature measurement for measurably better results

computer monitor to identify finer reservoir features and more accurately characterize the reservoir

Ultimate measurement stability

The Signature CQG gauge’s dual-mode sensor and highly accurate clock deliver long-term pressure measurement with only minimal drift. This stability and industry-leading resolution mean you’ll measure farther into the reservoir and clearly detect boundaries.
Wireless delivery for real-time pressure data
Run Signature gauges with the Quartet downhole reservoir testing system enabled by Muzic wireless telemetry, and you’ll get your pressure measurements in real time—while monitoring and controlling your downhole reservoir test. Reliable Muzic wireless telemetry brings bidirectional communication to your test for real-time pressure data verification and better-informed decision making.
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Signature CQG
Crystal quartz gauge

Quartet-HT

High-temperature downhole reservoir testing system

Get reservoir-representative fluid samples and high-resolution pressure measurements with multicycle flexibility in a single run and at ultrahigh temperatures.

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Monitor and manage wellbore events as they happen, validate pressure data while you test, and ensure that you've met your test objectives before ending your test.
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Brochure Signature Quartz Gauges

High-quality pressure measurements in all reservoir testing environments.

Video Signature CQG Crystal Quartz Gauge

Eliminate temperature lags and discrepancies that can result from thermal response.

Video How the Signature CQG Gauge Works

Obtain the highest-resolution downhole pressure measurements.

Product Sheet Signature CQG Crystal Quartz Gauge

Premium pressure measurements for accurate reservoir description.

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