دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: viscosity as measured by the Marsh funnel, based on the number of seconds it takes for 61 cubic inches (1,000 cubic centimetres) of drilling fluid to flow through the funnel.

n: Time, in seconds for one quart of mud to flow through a Marsh funnel. This is not a true viscosity, but serves as a qualitative measure of how thick the mud sample is. The funnel viscosity is useful only for relative comparisons.

a viscosity measurement based on the number of seconds that it takes for 1 liter of fluid to flow through a Marsh funnel.

n: a calibrated funnel used in field tests to determine the viscosity of drilling mud.

n: an instrument used in determining the marsh funnel viscosity. The marsh funnel is a container with a fixed orifice4 at the bottom so that when filled with 1,500 cc fresh water,1qt(946ml) will flow out in 26+/-0.5 sec. for 1,000 cc out, the efflux time for

a funnel shaped device of specific volume and shape and outlet that is used to quickly estimate the viscosity of the drilling mud by the time it takes a funnel volume to flow out of the funnel. The Marsh funnel viscosity is reported as the number of secon

n: see funnel viscosity;kinematic viscosity.

n: the apparatus that uses to measure the visious of fluid.