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Crude oil assay

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Title: Crude oil assay  
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Subject: Petroleum, True vapor pressure, Oil refining, K factor (crude oil refining)
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Crude oil assay

A crude oil assay is essentially the chemical evaluation of crude oil feedstocks by petroleum testing laboratories. Each crude oil type has unique molecular, chemical characteristics. No crude oil type is 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 the crude oil could cause yield, quality, production, environmental and other problems.

The assay can be an inspection assay or comprehensive assay. Testing can include crude oil characterization of whole crude oils and the various boiling range fractions produced from physical or simulated distillation by various procedures. Information obtained from the petroleum assay is used for detailed refinery engineering and client marketing purposes. Feedstock assay data are an important tool in the refining process.

See also

External links

  • Energy Institute Crude Oil Data
  • US Dept. of Energy Assay Manual PDF

Many oil companies have links to crude oil assays on their web pages. The assays are often on the pages with the field information.

  • Statoils page for links to crude oil assays
  • Chevron page for links to crude oil assays
  • BP page for links to crude oil assays
  • Total page for links to crude oil assays
  • ExxonMobil page for links to crude oil assays
  • Santos page for links to crude oil assays
  • Canadian page for links to crude oil assays
  • Shell Capline for links to crude oil assays
  • Environment Canada link to crude oil properties database
  • Malaysian page for links to crude oil assays
  • Kernel Energy crude oil assays
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