Production
Asia-Pacific Economic Cooperation (APEC)

European Commission - Eurostat
Production refers to the quantities of fuels and energies extracted or produced, calculated after any operation for removal of inert matter or impurities. Indigenous production refers to production within national boundaries including off shore production. There are a few specificities according to the fuels:

- Oil: Production includes only marketable production, and excludes volumes returned to formation. Such production should include all crude oil, NGL, condensates and oil from shale and tar sand, etc. It should also include the receipts of additives/oxygentates by refineries and blending plants from outside the refinery sector.

- Natural Gas: All dry marketable production is measured after purification and extraction of NGLs and sulphur. Quantities reinjected, vented or flared, are not included. Production includes quantities used within the natural gas industry; in gas extraction, pipeline systems and processing plants.

Calculation of production of hydro, geothermal, solar, wind, etc and nuclear follows some conventions used by selected international organisations.

As regards the production of secondary energy in the basic energy statistics, production of secondary oil products represents the gross refinery output. Secondary coal products and gases represent the output from coke ovens, gas works, blast furnaces and other transformation processes. In the energy balances production of secondary products is zero and the gross refinery output is included in the transformation sector.

International Energy Agency (IEA)
Production refers to the quantities of fuels and energies extracted or produced, calculated after any operation for removal of inert matter or impurities. Indigenous production refers to production within national boundaries including off shore production. There are a few specificities according to the fuels:

- Oil: Production includes only marketable production, and excludes volumes returned to formation. Such production should include all crude oil, NGL, condensates and oil from shale and tar sand, etc. It should also include the receipts of additives/oxygentates by refineries and blending plants from outside the refinery sector.

- Natural Gas: All dry marketable production is measured after purification and extraction of NGLs and sulphur. Quantities reinjected, vented or flared, are not included. Production includes quantities used within the natural gas industry; in gas extraction, pipeline systems and processing plants.

Calculation of production of hydro, geothermal, solar, wind, etc and nuclear follows some conventions used by selected international organisations.

As regards the production of secondary energy in the basic energy statistics, production of secondary oil products represents the gross refinery output. Secondary coal products and gases represent the output from coke ovens, gas works, blast furnaces and other transformation processes. In the energy balances production of secondary products is zero and the gross refinery output is included in the transformation sector.

International Energy Forum Secretariat (IEFS)
Crude oil production. In the JODI questionnaire, production only applies to crude oil. Production of refinery
products is refinery output (see 4.6 Refinery Output).

Production is the removal of oil from the field, whether through primary or secondary recovery. Although this concept sounds simple, there are many different items that can be included or excluded when reporting crude oil production. The main differences however are between wellhead production and marketed production.

Wellhead production is all oil which exits the ground (wellhead). When the crude oil has been brought to the surface, it requires further treatment so that it can be sent to refineries for processing. The oil produced at the well-head varies considerably from field to field, due not only to the physical characteristics, but also to the amount of gas and water which it contains. Before the oil can be sold, the remaining gas, water and other
impurities need to be removed. Once this is done, the oil is stored at the terminal before transport to refineries. It is at this point that the produced oil becomes marketable (production).

Latin American Energy Organization (OLADE)
Primary energy production covers all energy extracted, exploited, harvested, etc. which is considered to be of importance to the country, and of course that has been produced within the national territory.

Secondary energy production refers to the amount of energy that is generated from primary energy processing and/or in transformation centers, within the country, before accounting for self–consumption. If any part of the production is recycled to the same transformation center that it comes from, this should be deducted from production.

All secondary energy production should be accounted at the transformation center where each energy product is produced.

United Nations Economic Commission for Europe (UNECE)
Production refers to the quantities of fuels and energies extracted or produced, calculated after any operation for removal of inert matter or impurities. Indigenous production refers to production within national boundaries including off shore production. There are a few specificities according to the fuels:

- Oil: Production includes only marketable production, and excludes volumes returned to formation. Such production should include all crude oil, NGL, condensates and oil from shale and tar sand, etc. It should also include the receipts of additives/oxygentates by refineries and blending plants from outside the refinery sector.

- Natural Gas: All dry marketable production is measured after purification and extraction of NGLs and sulphur. Quantities reinjected, vented or flared, are not included. Production includes quantities used within the natural gas industry; in gas extraction, pipeline systems and processing plants.

Calculation of production of hydro, geothermal, solar, wind, etc and nuclear follows some conventions used by selected international organisations.

As regards the production of secondary energy in the basic energy statistics, production of secondary oil products represents the gross refinery output. Secondary coal products and gases represent the output from coke ovens, gas works, blast furnaces and other transformation processes. In the energy balances production of secondary products is zero and the gross refinery output is included in the transformation sector.