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What is the difference between “test density” and “base density”?

The density qualifies all crude oils and products and is required for the calculation of volume correction factors (VCF). Densities depend on the temperature (and pressure) of the bulk product.

Conversion group based quantity conversions are defined at a standard reference temperature (and pressure, if required). Globally, three different standard reference temperatures (also called “base temperature”) are in use within the oil industries (with a few more national exceptions): 60 °F, 15 °C and 20 °C.

The base density is the product density at the standard reference temperature.

The test density (also called observed density) is determined from a laboratory or field measurement. This measurement may be taken at a temperature that differs from the standard reference temperature. Thus it may require a correction to the base density value at standard reference temperature.

Note: QuantityWare BCP template reading groups may thus be configured – as examples for consultants – with test density values at test temperature values, that are not the base temperature defined in the conversion group.

Further FAQ reading:

Categories: SAP QCI General Configuration FAQs

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