دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a chemical compound of barium, sulphur, and oxygen (BaSﾰ4),which may form a tenacious scale that is very difficult to remove. Also called barite.

n: an aneroid barometer that continuously records atmospheric pressure values on a graph or chart.

n: (bbl) 1. a measure of volume for petroleum products in die United States. {A)e barrel is the equivalent of 42 US gallons or 0.15899 cubic meters (9,702 cubic inches). One cubic metre equals 6.2897 barrels. 2. the cylindrical part of a sucker rod pimp in whid1 the piston like plunger moves up and down. Operating as a piston inside a cylinder, the plunger and ~I create pressure energy to lift well fluid to the surface.

an oilfield measurement barrel is 42 US gallons or 5.615 ft3 or 6.28 barrels = 1 meters3. Note that reservoir barrels undergo shrinkage by the reservoir volume factor as gas escapes. Stock tank barrels are measured after gas escapes.

n: variation of barite. See barite.

n: an extrusive igneous rock that is dense, fine grained, and often dark gray to black. Compare gabbro.

the most common volcanic rock. Usually fine grained.

n: the volume of gas needed as permanent inventory to maintain adequate underground storage reservoir pressures and deliverability rates throughout the withdrawal season.

the gas required in a storage reservoir to cycle the working gas volume.

n: I. the fore and aft reference line at the upper surface of the flat plate keel at the centre line for flush shell plate vessels. 2. the thickness of the garboard strake above that level for vessels having lap seam shell plating.

n: the pressure exerted by a specific number of molecules contained in a specific volume (usually I cubic foot) at a specific temperature. Base pressure is a factor used in calculating gas volume. Standard base pressure varies from state to state. In Texas, for example, base pressure is 14.73 psia at 6().F. In Louisiana, base pressure is 15.025 psia at 6()ﾰF. base price II: the value of natural gas, usually at the wellhead, before any imposition of taxes, gathering, compression, or other charges, as stated in a gas sales contract. basicity II: pH value above 7 and the ability to neutralise or accept protons from .:ids.

n: a cement-mixing system in which dry cement and water are blended by a stream of air. The primary disadvantages are uneven mixing and volume limitations.

mixing a specific volume of a treating fluid in a properly sized tank – as opposed to mixing-on-the-fly.