دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a kind of chemical medicament used in drilling mud practice

n: a kind of substance which can impel two types of incompatible fluid to form tranquil suspended-turbid fluid

n: when essentially waterinsoluble greasy materials (e.g., emulsifiers. lubricants) separate out of drilling fluids.

n pi: naturally occurring special lignites, e.g., leonardite, that are produced by strip mining from special lignite deposits. Used primarily as thinners and emulsifiers.

n: the tiny colloidal particle that can be absorbed in oil aqueous interface and forms stable emulsion yet not need emulsifier.

n pi: naturally occurring special lignite. e.g., leonardite. that is produced by strip mining from special lignite deposits. The active ingredient is the humic acids. Mined lignins are used primarily as thinners. which mayor may not be chemically modified;however, they are also widely used as emulsifiers.

surfactants that exhibit an effect on water or oil by changing fluid properties at the interface of the fluid. May be emulsifiers, demulsifiers, surface tension lowering , flocculants, deflocculants, wetting agents, etc.

n: a soluble compound that concentrates on the surface boundary between two substances such as oil and water and reduces the surface tension between the substances. The use of surfactants permits the thorough surface contact or mixing of substances that ordinarily remain separate. Surfactants are used in the petroleum industry as additives to drilling mud and to water during chemical flooding. See micellar- polymer flooding, surfactant mud.

n: A chemical that acts as a surface active agent. This term encompasses a multitude of materials that function as emulsifiers, dispersants, oil-wetters, water-wetters, foamers and defoamers. The type of surfactant behavior, whether acting as an emulsifier o

a chemical that is attracted to the surface of a fluid and modifies the properties such as surface tension.