Lots of it, but it is already owned by Shell.
Sudan: Mixing Oil and Bloodby Benjamin Bock
Amnesty International
Amnesty NOW magazine, Summer 2002
A first-hand account of life and politics inside Sudan. There, a starving population has endured decades of war, sparked by religious differences, but now fueled by oil.
(...)
Since the pipeline became operational in 1999, oil and money have flowed in earnest. In 2001, oil earned the fundamentalist Islamic government $800 million, which it uses to finance the endless "jihad" While the government spends about $1 million a day on the war, humanitarian agencies report that 3.1 million Sudanese citizens need emergency food aid.
(...)
Sudan's blood-soaked oil business is a multinational affair, with major involvement of oil companies from China, Malaysia, Sweden, Canada, Italy, France, the Netherlands, and Qatar. Chevron did the initial oil exploration in the early 1980S, but U.S. sanctions currently bar U.S. oil companies from operating in Sudan.
(...)
Amnesty International has been particularly concerned about the role of Royal Dutch Shell in supplying aviation fuel to government combat aircraft, including helicopter gunships. A May statement by Amnesty charges that Sudan's air force, in violation of international law, has attacked civilian populations. Because the conflict areas in southern Sudan are isolated, no one knows the full extent of the current operations, but Amnesty cites reports that the air force is "currently carrying out indiscriminate or deliberate bombings and shellings of civilians living in the oil-rich Western Upper Nile." It called on "all oil companies, including Royal Dutch Shell, ...
take immediate steps to ensure that the oil they produce does not end up fueling military aircraft" that target civilians. The situation is exacerbated by Khartoum's refusal to allow NGOs to bring humanitarian assistance to the estimated 1.7 million civilians living in the besieged oil-producing region.
http://www.thirdworldtraveler.com/Africa/Sudan_Oil_Blood.html
It has oil, but it's already being exploited by a western company