petroleumreserven
Petroleumreserven, often translated as petroleum reserves, are quantities of crude oil and condensates that are economically recoverable from known accumulations under current technical, economic, and political conditions. They differ from resources, which may become recoverable with future changes in technology, price, or policy. Reserve estimates inform planning, policy, and market expectations.
Reserves are typically labeled as proved (1P), probable (2P), and possible (3P). Proved reserves have high confidence
Estimation relies on geological and engineering data: seismic surveys, well tests, production history, and decline-curve analysis,
Conventional reserves consist of oil recoverable with traditional methods, while unconventional reserves include oil sands, extra-heavy
Globally, reserves are concentrated in a few regions, notably in the Middle East and in North America