دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the force in dynes that a stationary flat plate with a surface area of 1 square centimetre exerts on a similar parallel plate 1 centimetre away and moving in its own plane with a velocity of 1 centimetre per second, the space between the plates being filled with the liquid in question. It is a measure of the resistance that the liquid offers to shear. absolute error n: the difference between the result of a measurement and the true value of the measured quantity as determined by means of a suitable standard device.

n: the value obtained when the absolute dynamic viscosity is divided by the density (expressed in grams per cubic centimetre) of the liquid at the temperature concerned.

a solid stick of chloro-acetic or sulfamic acid for small scale removal of acid soluble deposits.

n: English system buttress thread whose top angle is 29°. Mainly used to convey dynamic.

n: CH2=CHONH2, a kind of organic amine, is a materal for hydro polyacrylamide coagulant of drilling fluid.

a nonionic polymer (polyacrylamide) used in flocculation, clarifying and even gelling acids and other brines. Very stable, but difficult to effectively break.

n: the sum of the ideal pressure and the dynamic pressure.

n: A rig whose every clutch and drawworks brakestaff are controled by compressive air. Usually assisted with hydraulic brake and dynamic brake.

remediation technique to strip volitile contaminants from contaminated ground water after a spill. Works to oxidize components and to activate bacteria that can digest hydrocarbons.

n: a chemical family of specific organic compounds, including monoethanolamine (MEA),diethanolamine (OEA),and triethanolamine (TEA). These chemicals, and proprietary mixtures containing them and other amines, are used extensively for the removal of hydrogen sulphide and carbon dioxide from other gases and are particularly adapted for obtaining the low acid gas residuals that are usually specified by pipelines.