دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the temperature at which paraffin wax begins to congeal and become cloudy.

n: a crude oil that is characterised by a low API gravity and a low yield of lubricating oils and that has a low pour point and a low viscosity index (compared to paraffin-base oils). It is often called asphalt-base oil, because the residue from its distillation contains asphaltic materials but little or no paraffin wax.

n: a solid substance resembling beeswax but composed entirely of hydrocarbons. It is obtained from the crude wax that results from the solvent dewaxing or cold pressing of light paraffin distillates. The refined product is of relatively large crystalline structure, is white and brittle, and has little taste or odour.

n: a crude oil characterised by a high API gravity, a high yield of low-octane gasoline, and a high yield of lubricating oil with a high pour point and a high viscosity index. Popularly, and according to an early classification system, a paraffin-base oil is a crude oil containing little or no asphalt and yielding a residue from distillation that contains paraffin wax. Compare naphthene-base oil.

n: a paraffin wax that forms on the sucker rod string.