Economy of Nigeria imports a significant amount of food to sustain itself. However, efforts are being made towards making the country food sufficient again. Nigeria's proven oil reserves are estimated to be ; natural gas reserves are well over . Nigeria is a member of the Organization of Petroleum Exporting Countries (OPEC). The types of crude oil exported by Nigeria are Bonny light oil, Forcados crude oil, Qua Ibo crude oil and Brass River crude oil. Poor corporate relations with indigenous communities, vandalism of oil infrastructure, severe ecological damage, and personal security problems throughout the Niger Delta oil-producing region continue to plague Nigeria's
Brass River of Fernando Po, concluded a treaty with the kings of the territories adjacent to the Brass River. They agreed to stop the slave trade, and agreed on pilots' fees, duties and other terms of trade. Hutchinson reported of a visit to Brass on 9 July 1857, In 1847 the new partnership of Stuart and Douglas bought a 282-ton barque, the "Adriana", and sent it to the Brass River. Their agent was told to offer the local chiefs a share of the profits from palm oil trading on condition they stopped trading in slaves. This was the start of a lucrative