Circulation time Definition


Circulation time:

The elapsed time for mud to circulate from the suction pit, down the wellbore and back to surface.

Circulation time allows the mud engineerĀ to catch “in” and “out” samples that accurately represent the same element of mud in a circulating system.

Circulation time is calculatedĀ from the estimated hole volume and pump rate and can be checked by using tracers such as carbide or rice granules.