OPEC current members
Member Countries
Algeria
Angola
Congo
Equatorial Guinea
Gabon
Iran
Iraq
Kuwait
Libya
Nigeria
Saudi Arabia
United Arab Emirates
Venezuela
https://www.opec.org/opec_web/en/about_us/25.htm
Considering the world usage how long does it take to
replace those gallons or are they never replaced? If
never then what is the available length of time does
the world have before oil no long exist?