Permanent Downhole Pressure and Temperature Gauges | Schlumberger
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Permanent Downhole Gauges

Manage your reservoir with real-time digital data

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Extended Reliability
Survivability >20 years at rated temperature
Digital Telemetry
EM noise immunity and greater communication flexibility
Metrology Assurance
In-house calibration for superior performance

Optimize well productivity and hydrocarbon recovery

Enhance the performance of your wells with gauges that incorporate the most recent innovations in transducers, fully welded assemblies, corrosion-resistant alloys, and robust electronic components. By monitoring your wells and reservoirs in real time, you’ll identify trends without having to conduct costly, risky, and time-consuming well interventions.

Metris systems—not yesterday’s gauges

Schlumberger permanent downhole gauge technology has evolved from transmit-only devices providing pressure and temperature (PT) measurements at fixed time intervals into interactive systems that enable users to actuate a wide range of downhole completion equipment by using just one electric and two hydraulic lines.

Gauges belonging to the new family of Metris permanent monitoring systems use a single acquisition and diagnostics card that employs frequency division multiple access (FDMA) telemetry—also used by cellular telephones—for bidirectional communication to accommodate dynamic conditions. The card and telemetry combination enables

  • acquisition of PT measurements
  • immunity from any electromagnetic noise (e.g., from an ESP or other AC-powered devices)
  • deployment of more gauges on one monoconductor cable
  • elimination of limitations on distance between gauges
  • selective hydraulic actuation
  • prognostic health monitoring (PHM) of subsurface safety valve actuation
  • gauge, connector, cable, and acquisition system diagnostics.

All Metris systems are compatible with Agiliti modular digital completions, which maximize flexibility, simplify well design, reduce installation complexity, increase downhole control, and efficiently optimize production. Intelligent gauges are the way forward.

Metris system gauges operating envelope
Metris Evolve and Metris Extreme gauges are available with various pressure and temperature ratings to suit your well conditions.

Permanent Downhole Gauge Applications

Leverage proven reliability and metrology to enhance your reservoir and production management.

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  • Reservoir diagnostics
  • Pressure decline evaluation
  • Production diagnostics
  • Reservoir drawdown management
  • and so much more…
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Metris Permanent Monitoring Systems Specifications
Metris Permanent Monitoring Systems Specifications Technology Metris Permanent Monitoring Systems Specifications Max. Working Pressure, psi [MPa] Metris Permanent Monitoring Systems Specifications Max. Working Temperature, degC [degF] Metris Permanent Monitoring Systems Specifications Max. Sensors per Cable
Metris Permanent Monitoring Systems Specifications Metris Evolve gauge Metris Permanent Monitoring Systems Specifications 16,000 [110] Metris Permanent Monitoring Systems Specifications 150 [302] Metris Permanent Monitoring Systems Specifications 16
Metris Permanent Monitoring Systems Specifications Metris Extreme gauge Metris Permanent Monitoring Systems Specifications 30,000 [207] Metris Permanent Monitoring Systems Specifications 204 [400] Metris Permanent Monitoring Systems Specifications 16
Metris Permanent Monitoring Systems Specifications Metris Eclipse system Metris Permanent Monitoring Systems Specifications 15,000 [103] Metris Permanent Monitoring Systems Specifications 150 [302] Metris Permanent Monitoring Systems Specifications 1 + 12
Metris Permanent Monitoring Systems Specifications FloWatcher system Metris Permanent Monitoring Systems Specifications 25,000 [172] Metris Permanent Monitoring Systems Specifications 204 [400] Metris Permanent Monitoring Systems Specifications 3 + 12

 
WellWatcher Permanent Monitoring Systems Gauges Specifications
WellWatcher Permanent Monitoring Systems Gauges Specifications Technology WellWatcher Permanent Monitoring Systems Gauges Specifications Max. Working Pressure, psi [MPa] WellWatcher Permanent Monitoring Systems Gauges Specifications Max. Working Temperature, degC [degF] WellWatcher Permanent Monitoring Systems Gauges Specifications Max. Gauges per Cable
WellWatcher Permanent Monitoring Systems Gauges Specifications WellWatcher Sapphire gauge WellWatcher Permanent Monitoring Systems Gauges Specifications 10,000 [69] WellWatcher Permanent Monitoring Systems Gauges Specifications 110 [230] WellWatcher Permanent Monitoring Systems Gauges Specifications 6
WellWatcher Permanent Monitoring Systems Gauges Specifications WellWatcher Quartz LT gauge
 WellWatcher Permanent Monitoring Systems Gauges Specifications 10,000 [69] WellWatcher Permanent Monitoring Systems Gauges Specifications 130 [266] WellWatcher Permanent Monitoring Systems Gauges Specifications 6
WellWatcher Permanent Monitoring Systems Gauges Specifications WellWatcher Quartz gauge WellWatcher Permanent Monitoring Systems Gauges Specifications 10,000 [69]
16,000 [110]
25,000 [172]
30,000 [207]		 WellWatcher Permanent Monitoring Systems Gauges Specifications 180 [356]
180 [356]
180 [356]
180 [356]		 WellWatcher Permanent Monitoring Systems Gauges Specifications 8
8
8
8
WellWatcher Permanent Monitoring Systems Gauges Specifications WellWatcher Quartz Extend gauge WellWatcher Permanent Monitoring Systems Gauges Specifications 20,000 [138]† WellWatcher Permanent Monitoring Systems Gauges Specifications 150 [302] WellWatcher Permanent Monitoring Systems Gauges Specifications 30
WellWatcher Permanent Monitoring Systems Gauges Specifications WellWatcher TruOptic gauge WellWatcher Permanent Monitoring Systems Gauges Specifications 20,000 [138] WellWatcher Permanent Monitoring Systems Gauges Specifications 250 [482] WellWatcher Permanent Monitoring Systems Gauges Specifications 4

†Rating for AC version of gauge; DC version rated 16,000 psi [110 MPa]

Downhole gauge acquisition hardware and software

Browse our surface and downhole hardware and acquisition software that help you increase completion efficiency.

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  • Surface hardware
  • Downhole hardware
  • Acquisition software
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Permanent Downhole Gauges Offerings

Metris Evolve
Permanent PT gauge
Proprietary enhanced silicon-on-insulator sensors for high-quality measurements, immune to electrical noise.
Metris Eclipse
B-annulus PT monitoring system
Continuous well integrity monitoring behind the production casing (in the B-annulus) in subsea wells.
Metris Extreme
HPHT permanent PT gauge
Advanced quartz sensors for high-quality measurements and telemetry that provides immunity to electrical noise.
WellWatcher Quartz LT
High-resolution PT gauge
Acquire accurate, high-resolution pressure data for long-term production monitoring applications to 130 degC and 10,000 psi.
WellWatcher Quartz Extend
AC- or DC-powered high-resolution dual-sensor PT gauge
Acquire continuous pressure and temperature data—and downhole flow rate measurements based on the ΔP method.
WellWatcher Quartz
Premium high-temperature, high-resolution PT gauge
Continuously monitor downhole pressure and temperature in real time with up to eight high-resolution gauges on a single cable.
WellWatcher Sapphire
PT gauge
Acquire accurate, stable pressure data for long-term reservoir and production monitoring applications to 110 degC and 10,000 psi.
FloWatcher
Flow rate, fluid density, and PT monitoring system
Continuously measure downhole flow rate, fluid density, pressure, and temperature in real time, using high-precision quartz gauges.
WellWatcher TruOptic
High-temperature fiber-optic pressure gauge
Acquire quartz-gauge pressure measurement accuracy in ultrahigh-temperature applications such as thermal recovery.
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Product Sheet Metris Evolve Permanent PT Gauge

Proprietary enhanced silicon-on-insulator sensors for high-quality measurements, immune to electrical noise.

Product Sheet Inductive Coupler

Reliable electrical connectivity across junctions in multistage completions.

Product Sheet WellWatcher Quartz Premium High-Temperature, High-Resolution PT Gauge

Featuring a quartz transducer and qualified for a 30-year life at 356 degF [180 degC].

Product Sheet Metris Eclipse B-Annulus PT Monitoring System

Enables continuous well integrity monitoring behind the production casing (in the B-annulus) in subsea wells.

Product Sheet Metris Extreme HPHT Permanent PT Gauge

Advanced quartz sensors for high-quality measurement and telemetry system immune to external electrical noise.

Product Sheet RTAC Real-Time Acquisition and Control System

Hardware and software modules that provide an interface between Schlumberger permanent downhole and surface completion equipment and the operator’s SCADA system.

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