Definitions, Sources and Explanatory Notes

 Category:   Petroleum Imports/Exports & Movements
 Topic:   Weekly Preliminary Crude Imports by Country of Origin


Key Terms Definition
Barrel A unit of volume equal to 42 U.S. gallons.
Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include:
  • Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered from oil well (casinghead) gas in lease separators and are subsequently commingled with the crude stream without being separately measured. Lease condensate recovered as a liquid from natural gas wells in lease or field separation facilities and later mixed into the crude stream is also included;
  • Small amounts of nonhydrocarbons produced with the oil, such as sulfur and various metals;
  • Drip gases, and liquid hydrocarbons produced from tar sands, oil sands, gilsonite, and oil shale.

  • Liquids produced at natural gas processing plants are excluded. Crude oil is refined to produce a wide array of petroleum products, including heating oils; gasoline, diesel and jet fuels; lubricants; asphalt; ethane, propane, and butane; and many other products used for their energy or chemical content.
    Imports Receipts of crude oil and petroleum products into the 50 States and the District of Columbia from foreign countries, Puerto Rico, the Virgin Islands, and other U.S. possessions and territories.

    For definitions of related energy terms, refer to the EIA Energy Glossary.


  • Energy Information Administration, Form EIA-804, "Weekly Imports Report".
  • EIA Forms & Instructions .
  • Explanatory Notes and Detailed Methods Report .

  •   Explanatory Notes

  • Preliminary data collected weekly. See U.S. Imports by Country of Origin for updated monthly and annual data.
  • Countries displayed represent top 15 countries based on annual import volumes.