Systems and methods for fluid end health monitoring

A method of monitoring a fluid end of a hydraulic fracturing pump, comprising:

• obtaining a first pressure measurement at the fluid end via a pressure sensor;
• obtaining a second pressure measurement at the fluid end via the pressure sensor;
• determining a pressure differential between the first pressure measurement and the second pressure measurement;
• and
• determining an operational condition of the fluid end based at least in part on the pressure differential and a known or estimated correlation between the pressure differential and the operational condition.

A hydraulic fracturing system, comprising:

• a pump comprising a fluid end;
• a pressure sensor positioned to measure pressure at the fluid end;
• and
• a control system, the control system configured to:
• obtain a first pressure measurement at the fluid end via the pressure sensor;
• obtain a second pressure measurement at the fluid end via the pressure sensor;
• determine a pressure differential between the first pressure measurement and the second pressure measurement;
• and
• determine an operational condition of the fluid end based at least in part on the pressure differential and a known or estimated correlation between the pressure differential and the operational condition.