The decline in Nigeria's oil production helped Libya to the summit as it reported an improved 1,173 mbpd in July.
Angola retained the second position after reporting 1.149mbpd production in July, up from 1.119 million the previous month.
The other oil-producing countries in Africa, Algeria, Congo, and Gabon, all reported production levels of 955,000, 282,000 and 62,000bpd, respectively.
