دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

pressure in atmospheres, approx 14.7 psia.

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.

a quarried sandstone with from 4500 to 9000 psi UCS, used commonly in laboratory flow testing.

n: The tripping jamming due to borehole wall collapsing, low-performance drilling fluid or cuttings accumulating.

n: trade name for appratus for cleaning and freeing oil tanks of gas by means of high-pressure jets of hot water. It consistes essentially of opposed double nozzles, which rotate slowly about their horizontal and vertical axes and project two streams of hot water at a pressure of 175 psi (1,206 kilo pascals) against all inside surfaces of the deck, bulkheads, and shell plating.

n: a device fitted to a proving tank to indicate the position of the liquid surface in relation to the reference mark corresponding to the nominal capacity of the proving tank, thus enabling the determination of the tanks liquid contents. capacity rating n: a rating equal to the maximum number of cubic feet of gas that will pass through a meter when the pressure differential across the meter equals a 0.5- inch water column and the flowing pressure is 0.25 psig.

n: the amount of pressure that, when applied inside a string of casing, causes the wall of the casing to fail. This pressure is critically important when a gas kick is being circulated out, because gas on the way to the surface expands and exerts more pressure than it exerted at the bottom of the well.

n: The pressure leading to collapsing of the casing.

n: The phenomenon that casing is collapsed or damaged because the difference of external pressure and internal pressure is more than collapsing strength of casing.

a generic grade classifying the strength of the pipe: L80, P-110, etc. The numbers are the minimum yield of the steel in 1000’s of psi.

n: collapsing of the walls of the wellbore. Also called sloughing.

n: Collapse of the walls of the borehole. Also referred to as sloughing.