دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Used in the condition of high temperature and pressure, usually from 3000m to 4200m.

n: Used in the condition of ultra high temperature and pressure, usually from 3000m to 4800m.

n: Used as the basic oilwell cement from surface to 2500m.

n: Used as the basic oilwell cement from surface to 2500m.

n: Resisting high temperature and pressure, usually used in the depth from 4000m to 4800m.

n: See API filtration.

n: The method that can measure drilling fluid filtration regulated by API. Refered to the filtrated volume of drilling fluid in the condition of routine pressure of 690kpa(+ or -35kpa),filter area of 4580mm2(+ or - 60mm2) and 30min.

a standard fluid leakoff test published by API.

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 measure of the density or gravity of liquid petroleum products in the United States;derived from relative density in accordance with the following equation: API gravity at 60ﾰF = [141.5 + relative density 60/60ﾰF] -131.5 API gravity is expressed in degrees, 1 D. API being equivalent to 1.0, the specific gravity of water. See gravity.

n: A measure of the density of liquid petroleum products, expressed in degrees. It can be derived from the following equation: API gravity (degree) =141.5/specific gravity-131.5

the relative density of a hydrocarbon based on a scale of degrees API. Density in g/cc = (141 / (131 +API)).