The Mud Pumps are equipped with a single mechanical barrier (Relief valve) which diverts the flow to discharge in case the working pressure exceeds the calibration. The Pump Overpressure Preventer works as a second barrier that can improve the management of any circuit overpressures. It is a software barrier that intervenes upon reaching a pressure threshold defined by the user with the aim of avoiding shock to the well and to the equipment.
The proposed software control system is processing the circulation pressure signal of the circuit (SPP - Stand Pipe Pressure) and manages the Mud Pump as a function of the detected pressure.
Taken as 100% the value at which the mechanical relief valve is calibrated, two software intervention thresholds are inserted, which produce different effects.