According to link.springer.com Nigeria has; Old Port Harcourt Refinery; capacity 60,000 bpsd commissioned in 1965, Warri Refining and Petrochemical Company; capacity 125,000 bpsd commissioned in 1978, Kaduna Refining and Petrochemical Company; capacity 110,000 bpsd commissioned in 1980, New Port Harcourt Refinery; capacity 150,000 bpsd commissioned in 1989.
Thus, the total installed capacity is 445,000 bpsd. These plants in the last 15–20 years had a poor operating record with average capacity utilization hovering between 15 and 25% per annum. As a result, 70–80% of the national petroleum products demand is met through import. As at 2017, the aggregate demand of petroleum products in Nigeria was equivalent to 750,000 bpsd.
Presently, a small percentage of production can only be refined domestically as refining capacity is very low and barely enough to meet local demand. As such, Nigeria relies heavily on refined fuel importation.