دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a method of improved recovery in which alkaline chemicals such as sodium hydroxide are injected during a water flood or combined with polymer flooding. The chemicals react with the natural acid present in certain crude oils to form surfactants within the reservoir. The surfactants enable the water to move additional quantities of oil from the depleted reservoir. Compare chemical flooding, polymer flooding, water flooding.

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.

straight or branched chain chemicals with some double bonds between carbons.

Injection of fluids down the annulus or “backside”. Common as a gas supply path for gas lift. Also used in some fracturing operations, to spot fluids downhole when no packer is used or a type of injection valve is in the tubing to allow entry of chemicals

chemicals which prevent hydrate crystals from sticking together and forming a larger mass.

describing members of a family of chemicals with a ring structure of carbon chains. Normally xylene, toluene, etc. Benzene is a aromatic but is not used.

n: A kind of device that processes grained solid material. Applied for processing various drilling fluid treating chemicals, usually for processing coarse and inert bridging material.

a small, usually hand driven pump with a long dip tube used to move chemicals from drums and barrels.

a test measuring the concentration or build-up of potential harmful chemicals in a living organism.

n: a test in which different chemicals are added to bottle samples of an emulsion to determine which chemical is the most effective at breaking the emulsion into oil and water. Once an effective chemical is determined, varying amounts of it are added to bottle samples of the emulsion to determine the minimum amount required to break the emulsion effectively.