دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a vessel above a datum line (usually ground level). elevator bails n pI: see elevator links. elevator links n pI: cylindrical bars that support the elevators and attach them to the hook. Also called elevator bails.

n: a kind of pulsator whose vibrator axis doesnt pass the barycenter of the screen frame ,the screen frame not oly makes translational motion but also rotate around the barycenter

n: the boreholes with different diameters in the same vertical direction on the same flat

n: see emulsifying agent.

a emulsion stabilizing mechanism, usually either surface active agent, fines, viscosity and/or charge.

n: a system, chemical, device, or process used for breaking down an emulsion and producing two or more easily separated compounds (such as water and oil). Emulsion breakers may be (1) devices to heat the emulsion, thus achieving separation by lowering the viscosity of the emulsion and allowing the water to settle out;(2) chemical compounds, which destroy or weaken the film around each globule of water, thus uniting all the drops;(3) mechani- cal devices, such as settling tanks and wash tanks;or (4) electrostatic treaters, which use an electric field to cause coalescence of the water globules.

a chemical or physical effect that prevents separation of two or more, normally immiscible phases. Normally surfactant, electrical charge, liquid or emulsion viscosity, or micron sized solids at the interface.

n: refer tobreakdown voltage

n: a collective term for a variety of petroleum-based derivatives such as asphalts, coal tars, grease and wax, mastics, and asphalt mastics that are used to coat pipe.