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 connected with the main Nun and Brass rivers by numerous winding rivulets. An account of the journey says, In 1838 the boats of H.M.S. "Viper" ascended the Brass river for about . They reported that it was wide, and deep. The banks were fringed with impenetrable mangroves. On the return voyage they were assisted by a current running at along the western shore. An 1842 report to the British House of Commons said that "Slaves may be taken from the Bonny to the Brass River, and are taken there; the Brass River is not under King Peppel, and separate treaties