دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the property by which a fluid in motion offers resistance to shear and flow. Usually expressed as newton seconds/metre.

the measure of a fluid’s ability to resist flow without regards to its density. It is defined as a fluid’s kinematic viscosity multiplied by its density.

v: I. to take in and make part of an existing whole. 2. to recover liquid hydrocarbons from natural or refinery gas in a gas- absorption plant. The wet gas enters the absorber at the bottom and rises to die top, encountering a stream of absorption oil (a light oil) travelling downward over bubblecap trays, valve trays, or sieve trays. The light oil removes, or absorbs, the heavier liquid hydrocarbons from the wet gas. See bubble-cap tray, sieve tray, valve tray.

to fill part or all of the pore spaces.

n pi: penalties or fines handed down by administrative agencies, such as the EPA.

n: See mist.

a suspension of fine liquid droplets or solid particles in a gas.

a pool in which the total oil or gas production is restricted and allocated to specific wells as defined in a proration agreement.

n: finely crystalline, generally lightcoloured extrusive igneous rock com- posed largely of plagioclase feldspar with smaller amounts of dark-coloured minerals. Compare diorite.

n: a classification system for oilwell cements, defined in API Specification 10A.

n: Oilwell cement class suggested by API regulates that there are 9 classes of cement, A to J. They can be used according to the downhole temperature and depth.

n: the standard unit of gamma ray measurement. Standardisation of this unit results from the normalisation of the detector-measurement systems of all primary service companies in the API test pits at the University of Houston. The API gamma ray unit is defined as 1/200 of the difference in log deflection between two zones of different gamma ray intensity. The test pit is constructed so that the average midcontinent shale will record about 100 API gamma ray units.

n: The resistivity recorded by electrical logging. It is different from the real resistivity due to the influence of cake, invaded zone and surrounding rock.

resistivity recording where the measured value differs from the true or defined state by the influence of the mud column, invasion of a zone by fluids, or wellbore anomalies.

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.