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 to the Santa Barbara River. The name was used specifically for Twon village on the Brass river, the route to the Nembe capital in the interior. In the 1884 and 1886 treaties "Brass" referred to the Nembe state. The Brass river was also called the Rio Bento, or St. John river. The Brass River is a branch, or distributary, of the Nun River, which flows to the west. The Nun River is itself a continuation of the Niger River, which divides into the Nun and Forçados Rivers about downstream from Aboh. The Brass leaves the east side of the Nun