دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the standard unit of measurement for neutron logs. Standardisation of this unit results from the calibration of each logging tool model in the API neutron test pit at the University of Houston.

n: the adjustment or standardising of a measuring instrument or of a standard capacity measure, a tank prover, or a pipe prover. Log calibration is based on the use of a permanent calibration facility of the American Petroleum Institute at the University of Houston to establish standard units for nuclear logs.

comparison to a standard and adjustment to fit.

n: pulse per unit volume.

n: in turbine operations, a constant that accounts for the difference between theoretical rotor speed and actual rotor speed.

n: 1. a table that shows the capacities of, or volumes in, a tank for various liquid levels measured from the dip point or from the ullage reference point. Also called gauge or tank capacity table. 2. a table that is developed by recognised industry methods to represent volumes in each tank according to the liquid (image) or empty space (ullage) measured in the tank. Also called tank capacity table, tank table.

n: see prover tank.

n: the point to which all measurements for the calibration of a tank are related.

n: a European term for the point on the bottom of a container that the dip weight touches during gauging and from which the measurement of the oil and water depths are taken. The dip point usually corresponds with the datum point, but any difference in levels must be designated in the calibration table.

n: Schlumberger wireline tool that records shear, compressional and stoneley waveforms. Used for amplitude variation with offset (AVO) calibration, shear seismic correlation, wellbore stability measurements, sanding analysis, fracture height estimation and s