دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

carbon and hydrogen compounds that may be branched of straight chained. Aliphatics may be paraffin (saturated) or olefinic (unsaturated).

n: see paraffin.

n: an electric heater screwed onto lengths of tubing and lowered into the well. It raises the bottomhole temperature of the well to prevent solidification of paraffin in subsurface equipment.

n: a paraffin hydrocarbon, C4H10 , that is a gas in atmospheric conditions but is easily liquefied under pressure. It is a constituent of liquefied petroleum gas. See commercail butane, field-grade butane, normal butane.

a four carbon chain alkane, may be a liquid in the reservoir, but vaporizes as pressure is released. Part of the natural gas liquid components.

n: any of many processes in the oil industry that involve the use of a chemical to effect an operation. Some chemical treatments are acidising, crude oil demulsification, conclusion inhibition, paraffin removal, scale removal, drilling fluid control, refinery and plant processes, cleaning and plugging operations, chemical flooding, and water purification.

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

the first appearance of microsized paraffin crystals in suspension in the oil.

a device with a chilled probe that measures the temperature at which paraffin will precipitate of an oil solution.

n: unrefined liquid petroleum. It ranges in gravity from 9. API to 55. API and in colour from yellow to black. and may have a paraffin, asphalt, or mixed base. If a crude oil, or crude, contains a sizeable amount of sulphur or sulphur compounds, it is called a sour crude;if it has little or no sulphur, it is called a sweet crude. In addition, crude oils may be referred to as heavy or light according to API gravity, the lighter oils having the higher gravities.

n: The petroleum which is not being processed.

n: a saturated nonaromatic hydrocarbon compound with ring-shaped molecules. of the general chemical formula CnH2n Also called naphthene.