دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the fraction of the effective porosity filled with a specific fluid.

n: diving in which a divers tissues are saturated with an inert gas to a point where no more of the gas can be absorbed by the body. Once a diver is saturated, decompression time remains the same whether he or she stays at the saturated depth for 24 hours or for several days. saturation point n: the point at which, at a certain temperature and pressure, no more solid material will dissolve in a liquid.

the exponent, n, in the water saturation term in the equation that relates resistivity to water saturation.

pressure at which vapor and liquid are in equilibrium. For oils, equal to the bubble point. For condensates, the dew point.

a gravel sizing method that takes the 50% intercept of a cumulative percent retained of the formation sand against a log particle size;then multiplies by 6 to get the median gravel size for the pack.

n: an expendable substitute device made up in the drill stem to absorb much of the wear between the frequently broken joints (such as between the kelly or top drive and the drill pipe). See kelly saver sub.

n: The sub between the drill string ,which be used to decrease the wear when make up and breakout.

a threaded coupling under the kelly to which the joints of drill sting are make up. Save wear on the kelly threads.

n: (SSU) a unit for measuring the viscosity of lighter petroleum products and lubricating oils. See Saybolt viscometel:

n: an instrument used to measure the viscosity of fluids, consisting basically of a container with a hole or jet of a standard size in the bottom. The time required for the flow of a specific volume of fluid is recorded in seconds at three temperatures (IOO.F-37.S.C, 130.F-54.4.C, and 210.F-9S.9.C). The time measurement unit is referred to as the Saybolt Second Universal (SSU).