As many as 30 WellWatcher permanent monitoring systems can be connected to a single cable, and they include a wide range of downhole electrical gauges and associated systems for point measurements of pressure, temperature, flow rate, and fluid density.
These gauges incorporate the most recent innovations in quartz and sapphire transducers, fully welded assemblies, corrosion-resistant alloys, and robust electronic components. Advanced cable head connector technology enhances reliability at the system level.
Bidirectional, high-rate data communication and electrical power are provided by a single permanent cable, simplifying installation and decreasing the number of wellhead and packer penetrations. The cable head features redundant, independent seals for improved reliability. A welded cable head is also available for the highest system protection against corrosive liquids, shock, vibration, and tensile load.
Gauge performance is validated in a controlled test cell where drift stability is measured at simulated reservoir pressure and temperature. During this measurement period, the gauges are also subjected to power on-off cycles and temperature cycling to simulate the most demanding operating conditions. These accelerated aging tests simulate multiple years at the rated temperature. Repeated and rigorous shock and vibration testing qualifies the entire assembly for deployment in production and injection wells.
A system comprising three quartz gauges for measuring flow rate, fluid density, pressure, and temperature; rated up to 25,000 psi and 177 degC.
Autonomous, cost-effective system for monitoring pressure and temperature in remote locations and brownfields that have no permanent power supply; rated 10,000 psi and 110 degC; max. 16 gauges per cable.