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2. List of countries by proven oil reserves - Wikipedia

   en.wikipedia.org/wiki/List_of_countries_by...

   Different estimates may or may not include oil shale, mined oil sands or natural gas liquids. Because proven reserves include oil recoverable under current economic conditions, nations may see large increases in proven reserves when known, but previously uneconomic deposits become economic to develop.

3. List of countries by natural gas proven reserves - Wikipedia

   en.wikipedia.org/wiki/List_of_countries_by...

   Trends in the five countries with largest proven reserves of natural gas, according to the US Energy Information Administration Countries by natural gas proven reserves (2014), based on data from CIA The World Factbook Countries by natural gas and oil proven reserves (2015) World natural gas proven reserves 1960–2012 (OPEC)

4. Oil by country - Wikipedia

   en.wikipedia.org/wiki/Oil_by_country

   By default countries are ranked by their total proven oil reserves. Note that data related to one parameter may be more up to date than data related to some other. See also separate lists and their source pages: List of countries by proven oil reserves [1] List of countries by oil production [2] List of countries by oil consumption [3]

5. Proven reserves - Wikipedia

   en.wikipedia.org/wiki/Proven_reserves

   Proven reserves (also called measured reserves, 1P, and reserves) is a measure of fossil fuel energy reserves, such as oil and gas reserves and coal reserves. It is defined as the "quantity of energy sources estimated with reasonable certainty, from the analysis of geologic and engineering data, to be recoverable from well established or known ...

6. List of oil fields - Wikipedia

   en.wikipedia.org/wiki/List_of_oil_fields

   This list of oil fields includes some major oil fields of the past and present. Countries by proven oil reserves 2017. The list is incomplete; there are more than 25,000 oil and gas fields of all sizes in the world. [1] However, 94 % of known oil is concentrated in fewer than 1,500 giant and major fields. [2]

7. Oil reserves in the United States - Wikipedia

   en.wikipedia.org/wiki/Oil_reserves_in_the_United...

   Consuming less or importing more oil prolongs the useful life of existing oil reserves. Between 1970 and 2007, due to declining production and increasing demand, net US imports of oil and petroleum products increased from 3.16 million barrels per day (502 × 10 ^ 3 m 3 /d) in 1970 to 12.04 million barrels per day (1.914 × 10 ^ 6 m 3 /d) in ...