دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an asphalt-base enamel applied as a coating to pipe that is to be buried. The asphalt is combined with finely ground mica, clay, soapstone, or talc and applied while hot. Combined with a subsequent wrapping, this coating protects the buried pipe from corrosion.

ring compound materials in the oil composed of carbon, hydrogen, sulfur, nickel and other trace materials. Asphaltenes are mostly very small platelets (35 A) suspended by micelles of maltenes and resins and carried through the oil. They precipitate by agg

n: see naphthene-base oil.

n: The paper applied asphalt. Used as the container of drilling fluid additive. The best advantage is dampproof and waterproof.

n: petroleum with a high proportion of naphthenic compounds, which leave relatively high proportions of asphaltic residue when refined.

n: one of a group of solid. liquid, or semisolid materials that are predominantly mixtures of heavy hydrocarbons and their non-metallic derivatives and are obtained either from natural bituminous deposits or from the residues of petroleum refining.

abbr: American Society of Safety Engineers.