دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a spot sample of free water taken from beneath the petroleum contained in a ship or barge compartment or a storage tank.

n: in tank sampling, a spot sample taken 4 inches (100 millimetres) below the level of the tank outlet.

n: a sample of a substance that is made up of equal portions of two or more spot samples obtained from a tank or pipeline. In a crude oil storage tank, one type of composite sample is taken at the top, at the bottom, and in the middle.

n: in tank sampling, a blend of spot samples mixed in equal proportions for testing.

n: 1. a small portion of a formation obtained by using a core bit in an existing wellbore. See core bit. 2. a spot sample of the contents of an oil or oil product storage tank usually obtained with a thief, or core sampler, at a given height in the tank.

n: The rock sample whose diameter is from 50mm to 100mm ,acquired from bottom hole when core drilling.

n: in tank sampling, a spot sample obtained at a level of fi/� the depth of liquid below the surface.

n: in tank sampling, a spot sample obtained from the middle of the tank contents.

n: taken on tanks that have a capacity larger than 1,000 barrels (159,000 titres) and that contain 10 feet (3 metres) or less of crude oil. One middle spot sample should be taken as near the centre of the vertical column of oil as possible.

n: in tank sampling, a sample obtained at some specific location in the tank by means of a thief, a bottle, or a beaker.

n: a spot sample taken from a suitable sample connection to the side of a tank.