Application | Underground Energy Storage Monitoring


Downhole pressure, temperature and vibration monitoring of gas (UGS), hydrogen energy (HES), and compressed-air energy (CAES) storage wells provide operators with the basis for accurate material balance, fluid level calculations and tubing stability. Governments are increasing regulatory demands for the monitoring of underground energy storage volume and pressure, and confirmation of caprock integrity on a frequent and long-term basis.

Acoustic Data’s SonicGauge™ Wireless Monitoring System allows cost-effective regulatory compliance by providing a high accuracy and high resolution wireless downhole gauge to measure pressure trends to identify the smallest deviation from expected subsurface storage pressure. Additionally, the SonicGauge™ System dynamically measures injection and production pressure gradients when SonicRepeater stations are equipped with onboard pressure transducers deployed at strategic locations along the tubing string.

Injection and production rates can be large and induce tubing oscillation. Along with pressure and temperature data packets, the SonicGauge™ can report highly sensitive vibration parameters in real-time, allowing the operator to safely manage injection and withdrawal rates.

The SonicGauge can be quickly retrofitted on slickline using the Barracuda™ HEX-Hanger™ (high expansion gauge hanger) in monitoring wells with tubing sizes from 2-3/8” to 13-3/8”, offering a rig-less deployment option. The technology can be set virtually anywhere in the tubing string by the patented and battery-powered Electro-SET (electro-mechanical setting tool).

The SonicGauge functions on an ultra-low energy budget and can provide real-time surface-read-out (SRO) of data for up to 8 years without well intervention, thus reducing operational expenditure and risk for years at a time.

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SonicGauge System | Drill Stem Testing


  • Monitoring gas and oil storage volumes and pressure (UGS)
  • Monitoring underground hydrogen and compressed-air energy storage
  • Monitoring cap rock integrity in offset observation wells

  • Low-cost compliance with government regulations
  • Real-time reservoir storage data without workover
  • Reduced OPEX spend related to memory gauge surveys