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  2. Volume correction factor - Wikipedia

    en.wikipedia.org/wiki/Volume_Correction_Factor

    These methods are often more time-consuming than entering the values into a VCF calculator; however, due to the variance in methodology and computation of constants, the tables published by the American Petroleum Institute are preferred when dealing with the purchase and sale of crude oil and residual fuels.

  3. Oil and gas reserves and resource quantification - Wikipedia

    en.wikipedia.org/wiki/Oil_and_gas_reserves_and...

    The method requires extensive pressure-volume-temperature analysis and an accurate pressure history of the field. It requires some production to occur (typically 5% to 10% of ultimate recovery), unless reliable pressure history can be used from a field with similar rock and fluid characteristics.

  4. Thermodynamic databases for pure substances - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_databases...

    The database provider must use recognized data analysis procedures to resolve differences between data obtained by different types of experiments. All thermodynamic data is a non-linear function of temperature (and pressure), but there is no universal equation format for expressing the various functions.

  5. Stock tank oil - Wikipedia

    en.wikipedia.org/wiki/Stock_Tank_Oil

    Stack Tank Oil (STO) density (or API) may also be used by regulatory bodies to classify oil and oil products. Other properties such as Molecular Weight , saturated aromatic resin and asphaltene (SARA), refractive index , wax appearance temperature, asphaltene precipitation, and acid number , are also specified at Stock Tank conditions. [ 1 ]

  6. Crude oil assay - Wikipedia

    en.wikipedia.org/wiki/Crude_oil_assay

    No two crude oil types are identical and there are crucial differences in crude oil quality. The results of crude oil assay testing provide extensive detailed hydrocarbon analysis data for refiners, oil traders and producers. Assay data help refineries determine if a crude oil feedstock is compatible for a particular petroleum refinery or if ...

  7. Pour point - Wikipedia

    en.wikipedia.org/wiki/Pour_point

    It is defined as the minimum temperature in which the oil has the ability to pour down from a beaker. [1] [2] In crude oil a high pour point is generally associated with a high paraffin content, typically found in crude deriving from a larger proportion of plant material. That type of crude oil is mainly derived from a kerogen Type III.

  8. Reid vapor pressure - Wikipedia

    en.wikipedia.org/wiki/Reid_vapor_pressure

    Reid vapor pressure (RVP) is a common measure of the volatility of gasoline and other petroleum products. [1] It is defined as the absolute vapor pressure exerted by the vapor of the liquid and any dissolved gases/moisture at 37.8 °C (100 °F) as determined by the test method ASTM-D-323, which was first developed in 1930 [2] and has been revised several times (the latest version is ASTM D323 ...

  9. K factor (crude oil refining) - Wikipedia

    en.wikipedia.org/wiki/K_factor_(crude_oil_refining)

    The K factor or characterization factor is defined from Rankine boiling temperature °R=1.8Tb[k] and relative to water density ρ at 60°F: . K(UOP) = / The K factor is a systematic way of classifying a crude oil according to its paraffinic, naphthenic, intermediate or aromatic nature. 12.5 or higher indicate a crude oil of predominantly paraffinic constituents, while 10 or lower indicate a ...