What Is the Definition of Differential Pressure?

What Is the Definition of Differential Pressure?

The term "differential pressure" refers to fluid force per unit, measured in pounds per square inch (PSI) or a similar unit subtracted from a higher level of force per unit. This calculation could be taken for pressures inside and outside a pipe or simply in different places along a flow path. This calculation has applications in the drilling industry.

Measuring differential pressure along a line helps drilling professionals identify the precise point of a blockage or to determine whether reservoir fluids are about to start backing into a wellbore, which can interfere with drilling operations. Keeping an eye on pressure at various points along a fluid line is vital for operational safety.