In 2014, here is the list, with the number of barrels produced per day, the world share :

1. Russia - 10,590,000 - 14.05%
2. Saudi Arabia - 9,693,200 - 13.09%
3. United States - 9,020,000 - 12.23%
4. China - 4,372,000 - 5.15%
5. Canada - 3,856,000 - 4.54%
6. Iran - 3,518,000 - 4.14%
7. Iraq - 3,400,000 - 3.75%
8. United Arab Emirates - 3,087,000 - 3.32%
9. Venezuela - 3,023,000 - 3.56%
10. Mexico - 2,934,000 - 3.56%

Source : https://www.iea.org/oilmarketreport/omrpublic/