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  5. Definitions and explanatory notes

Definitions and explanatory notes

Statistics published in this Review are taken from government sources and published data. No use is made of confidential information obtained by BP in the course of its business
Conversion factors

The conversion factors cover calculation between weight, volume and calorific measures. They provide data for crude oil, products, natural gas, LNG, electricity and solid fuels.

Reserves

Generally taken to be those quantities that geological and engineering information indicates with reasonable certainty can be recovered in the future from known reservoirs under existing conditions.

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The total oil reserves estimates have been compiled using a combination of primary official sources, third-party data from the OPEC Secretariat, World Oil, Oil & Oil & Gas Journal and an independent estimate of Russian reserves based on official data and Chinese reserves based on official data and information in the public domain. Canadian oil sands 'under active development' are an official estimate. Venezuelan Orinoco Belt reserves are based on the OPEC Secretariat and government announcements.

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The data series for proved oil in this year’s Review does not necessarily meet the definitions, guidelines and practices used for determining proved reserves at company level, for instance, as published by the US Securities and Exchange Commission nor does it necessarily represent BP’s view of proved reserves by country.

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The total natural gas reserves estimates have been compiled using a combination of primary official sources and third party data from Cedigaz and the OPEC Secretariat. The data series for proved gas reserves in this years Review does not necessarily meet the definitions, guidelines and practices used for determining proved reserves at company level, for instance as published by the US Securities and Exchange Commission nor does it necessarily represent BP’s view of proved reserves by country.

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Source

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Includes data from Federal Institute for Geosciences and Natural Resources (BGR) Energy Study 2017.

Reserves-to-production (R/P) ratio

If the reserves remaining at the end of any year are divided by the production in that year, the result is the length of time that those remaining reserves would last if production were to continue at that rate.

Percentages

Annual changes and shares of total in the tables for oil consumption, production, refining and trade movements could be calculated on either a volume (barrels per day) or on a weight (tonnes) basis. This year we have elected to calculate growth rates based on the data cited in the table. Percentages have been calculated before the rounding of actuals.

Rounding differences

Because of rounding, some totals may not agree exactly with the sum of their component parts.

Tonnes

Metric equivalent of tons.

Regional definitions

Country groupings are made purely for statistical purposes and are not intended to imply any judgment about political or economic standings

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North America

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US (excluding US territories), Canada, Mexico

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Caribbean

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Atlantic islands between the US Gulf Coast and South America, including Puerto Rico, US Virgin Islands and Bermuda.

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Central America

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Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama

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South and Central America

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Caribbean (including Puerto Rico and US Virgin Islands), Bermuda, Central and South America.

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Europe

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European members of the OECD plus Albania, Bosnia-Herzegovina, Bulgaria, Croatia, Cyprus, Georgia, Gibraltar, Latvia, Lithuania, Malta, Montenegro,?North Macedonia, Romania, Serbia and Ukraine.

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Commonwealth of Independent States (CIS)

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Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russian Federation, Tajikistan, Turkmenistan, Uzbekistan.

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Middle East

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Arabian Peninsula, Iran, Iraq, Israel, Jordan, Lebanon, Syria.

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Northern Africa

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Territories on the north coast of Africa from Egypt to Western Sahara.

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Eastern Africa

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Territories on the east coast of Africa from Sudan to Mozambique. Also Madagascar, Malawi, Uganda, Zambia, Zimbabwe.

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Middle Africa

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Angola, Cameroon, Central African Republic, Chad, Democratic Republic of Congo, Republic of Congo, Equatorial Guinea, Gabon, Sao Tome & Principe.

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Western Africa

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Territories on the west coast of Africa from Mauritania to Nigeria, including Burkina Faso, Cape Verde, Mali and Niger.

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Southern Africa

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Botswana, Lesotho, Namibia, South Africa, Swaziland.

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Asia Pacific

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Brunei, Cambodia, China ?, China Hong Kong SAR*, China Macau SAR*, Indonesia, Japan, Laos, Malaysia, Mongolia, North Korea, Philippines, Singapore, South Asia (Afghanistan, Bangladesh, India, Myanmar, Nepal, Pakistan and Sri Lanka), South Korea, Taiwan, Thailand, Vietnam, Australia, New Zealand, Papua New Guinea and Oceania.

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? Mainland China
* Special Administrative Region

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Australasia

Australia, New Zealand.

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OECD members (Organization For Economic Co-operation and Development)

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Europe: Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, UK.


Other member countries: Australia, Canada, Chile, Israel, Japan, Mexico, New Zealand, South Korea, US.

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OPEC members (Organization of the Petroleum Exporting Countries)

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Middle East: Iran, Iraq, Kuwait, Qatar, Saudi Arabia, United Arab Emirates.

North Africa: Algeria, Libya.

West Africa: Angola, Equatorial Guinea, Gabon, Nigeria, Republic of Congo.

South America: Ecuador, Venezuela.

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European Union members

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Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Republic of Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, UK.

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Non-OECD (Organization for Economic Co-operation and Development)

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All countries that are not members of the OECD.

Quoting from the Statistical Review

Publishers are welcome to quote from this document provided that they attribute the source to the BP Statistical Review of World Energy 2019. However, where extensive reproduction of tables and/or charts is planned, permission must first be obtained from:

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The Editor, BP Statistical Review of World Energy
BP p.l.c
1 St James's Square
London
SW1Y 4PD
UK

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Email: sr@smforum.net

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