دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the injection of air or gas into a liquid. In the oil industry a common form of aeration is the injection of natural gas into reservoir liquids standing in a well. Aeration with natural gas reduces the density of the liquids and allows declining reservoir pressure to lift the liquids. See gas lift.

n: The technique of injecting air or gas in varying amounts into a drilling fluid for the purpose of reducing hydrostatic head. See also Air Cutting.

intoduction of air.

n: a specialised form of intermittent-flow gas lift that functions in the same way as other forms, except that, when the injection gas is off, incoming well fluids accumulate in a chamber having a larger diameter than the tubing. For the same volume of fluid, hydrostatic head and wellbore pressure at the formation are both reduced.

n: the force exerted by a column of liquid expressed by the height of the liquid above the point at which the pressure is measured. Although head" refers to distance or height, it is used to express pressure, since the force of the liquid column is directly proportional to its height. Also called head or hydrostatic head. Compare hydrostatic pressure.

n: The force per unit area exerted by a column of liquid at a height above a depth (and pressure) of interest. Fluids flow down a hydraulic gradient, from points of higher to lower hydraulic head. The term is sometimes used synonymously with hydrostatic head

pressure exerted by a column of liquid.

n: see hydrostatic pressure.

n: the pressure exerted by a body of liquid at rest. The hydrostatic head of fresh water is 0.433 psi per foot of height.those of other liquids may be determined by compairing their specific gravities with the specific gravity of water.