دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a low place in a steel guard or casing that surrounds a moving chain or gear that requires constant lubrication. The sump holds a quantity of oil through which the moving parts travel and thus become lubricated.

a low area, usually the area below the perfs.

a bottom packer, commonly used to locate the bottom of a screen assembly in a sand control completion.

n: see suction pit.

a condition where the liquid is over saturated with incompatible ions or one ion concentration is above the saturation point. Usually a result of cooling a undersaturated fluid below the saturation point without a sufficient upset to start the precipitati

v: to supply a charge of air to the intake of an internal-combustion engine at a pressure higher than that of the surrounding atmosphere.

elevating the near wellbore pressure of a formation through leak-off of wellbore fluids during drilling, completion or workover.

n: a term some- times used to mean compressibility factor, but more often to mean the compressibility factor that is appropriate for high-pressure calculations. See compressibility facto7:

n: a deviation of natural gas from Boyles and Charless laws for ideal gas. Natural gas is not an ideal gas in that it is a mixture of several gases. As the pressure increases, the volume of space that a given weight of natural gas would occupy becomes increasingly smaller than the volume calculated by application of Boyles and Charless laws.