Electro-Hydraulic Servo Actuator (EHSA)

Since conception in 2014, the electro-hydraulic servo actuator, EHSA, is now a patented closed-loop system designed to be actuation at the source of operation in a downhole installation. Operation can be battery charged or from a single TEC line. The EHSA can be considered an engine for multiple-use applications such as operation of sliding sleeves, ball valves, safety valves.
FEATURE SET REQUIREMENTS
- Bi-Directional flow
- No solenoid needed to reverse flow
- Positive Displacement Pump (volumetric)
- No check valves
- Releases Pressure when power is off or lost
- By design guarantees NOT to hydraulically lock
- Operates unbalanced and single ended pistons
- Remedial capabilities
- Simplicity Achieves Reliability
- Debris tolerant
- Requires NO priming
- Pump Diameter 23 mm (< 1 inch)
- Various electrical motors are suitable for the system
- Battery or single line TEC powered

