Metris Express Single-Sensor Permanent PT Gauge

Overview

Noise-immune gauges with advanced bidirectional telemetry

Metris Express™ single-sensor permanent pressure and temperature gauges belong to the family of Metris™ permanent monitoring systems. These systems are specifically designed to be fully compatible with each other on a single cable as well as being interchangeable in the Metris system gauge mandrels.

Unlike conventional permanent downhole systems, Metris Express gauges use advanced bidirectional telemetry, which not only transmits pressure and temperature (PT) data but also enables users to update gauge firmware if needed.

Rated to 8,000 psi [55 MPa]

Rated to 250 degF [121 degC]

Rendering of Metris Express single-sensor permanent PT gauge in a gauge mandrel.

Metris Express gauges are available in single-sensor configuration for tubing or annulus measurements.

Applications

The gauges provide continuous PT measurements. Acquired data are used for

long-term production, injection, and reservoir monitoring in real time
production allocation and management
production and injection optimization
well productivity, pressure transient, and decline analysis
workover and intervention planning
improved field development via identification of interwell connectivity and optimization of offset well placement and completion design
reservoir model improvement and validation
artificial lift optimization
hydraulic fracture monitoring.

Benefits

Enabling real-time evaluation and prompt corrective actions for enhanced well production

Metris Express gauges use proprietary enhanced silicon-on-insulator sensors for high-quality measurements in the tubing or annulus.

The telemetry used by the gauge and surface acquisition unit is immune to external electrical noise and electromagnetic field interference (e.g., from ESP power cables or motor drives).

Features

Metris Express gauges use the field-proven Sealtite™ downhole dry-mate connector and a radial lower tip connector, both of which are qualified past the pressure and temperature ratings of the gauge. The radial connection is V0-qualified per ISO 14998 and the gauge metallurgy is H₂S resistant per NACE MR0175/ISO 15156.

FAQs

What makes Metris Express gauges a superior product?

These permanent gauges are engineered to deliver stable PT measurements at downhole conditions, a quality that is essential for long-term reservoir and production monitoring. Performance is validated in a controlled test cell, where drift stability is measured at simulated reservoir PT conditions. Every gauge is calibrated in-house at an SLB manufacturing center to maximize performance.

The gauges are also subjected to power on-off cycles and temperature cycling to simulate the most demanding operating conditions. They are qualified for a lifetime in excess of 30 years at 250 degF. Repeated shock and vibration testing at rigorous levels ensures that they meet the environmental qualifications for production and injection wells. Qualifications meet or exceed the Advanced Well Equipment Standards (AWES) recommended practice for the qualification of downhole instrumentation and sensors. Metris Express gauges transmit more than 30 system health tags to surface at regular intervals for diagnostic and prognostic system health monitoring.

How can you protect these gauges during deployment and long-term production?

Our solid gauge mandrel provides a protective recess for Metris system gauges. It is available in various grades of metal to ensure characteristics equivalent or superior to the tubing, and it can be installed in sweet to severely corrosive environments.

Mandrels are rated for various working pressures according to tubing weight and material grade. They have no inherent weak points or highly stressed areas because they are machined from a single block (billet) with no weld seams. These solid gauge mandrels are designed and manufactured to API Spec 5CT for collapse pressures, burst pressures, tensile strengths, and drift. They are custom cut with premium connections; tong space and thread recut lengths are provided as requested.