The more Refineries your country have, the more developed your country is.
Nigeria is by no means a rich country. See why
Also, you must take population into account.

South Africa:
Sapref Durban Refinery (Shell/BP), 180,000 bbl/d (29,000 m3/d)
Petronas Durban Refinery (Enref) (Petronas), 125,000 bbl/d (19,900 m3/d)
Caltex Capetown Refinery (Chevref) (Caltex(Chevron)), 100,000 bbl/d (16,000 m3/d)
Natref Sasolburg Refinery (Sasol/Total), 92,000 bbl/d (14,600 m3/d)
Sasol I, II & III (Sasol), 150,000 bbl/d (24,000 m3/d)
PetroSA (Petroleum, Oil & Gas Corporation of South Africa), 45,000 bbl/d (7,200 m3/d)


Nigeria:
Port Harcourt Refinery PHRC 210,000 bbl/d (33,000 m3/d)
Warri Refinery WRPGC 125,000 bbl/d (19,900 m3/d)
Kaduna Refinery KRPC 110,000 bbl/d (17,000 m3/d)

Saudi Arabia:
Riyadh Refinery (Saudi Aramco), 120,000 bbl/d (19,000 m3/d) (19,000 m³/d)
Rabigh Refinery (Saudi Aramco), 400,000 bbl/d (64,000 m3/d) (64,000 m³/d)
Yanbu' Refinery (Saudi Aramco), 230,000 bbl/d (37,000 m3/d) (37,000 m³/d)
Jeddah Refinery (Saudi Aramco), 1,000 bbl/d (160 m3/d) (16,000 m³/d)
Ras Tanura Refinery (Saudi Aramco), 525,000 bbl/d (83,500 m3/d) (83,500 m³/d)
Aramco/Exxon Yanbu' Refinery (Saudi Aramco/ExxonMobil), 400,000 bbl/d (64,000 m3/d) (64,000 m³/d)
Aramco/Shell Jubail Refinery (Saudi Aramco/Shell)
Aramco/Total Jubail Refinery,400,000 bbl/d (64,000 m3/d) (64,000 m³/d)
Chevron
Aramco/ ConocoPhillips Refinery (still under construction)
khilji oil refinery

See a complete list here and see why Nigeria is a poor country and people looking for work all the time, when there so many room to create work. But they just wont do it, why why why

http://en.wikipedia.org/wiki/List_of_oil_refineries#Nigeria

One refinery in Saudi Arabia alone equal the total output of all the refineries in Nigeria.
You tell me if Nigeria is a rich country, taking into account population size and the fact that people embezzle money in all country.
Embezzlement is not a concrete reason for less development and poverty.

Nigerian people allow this happen. You elect bad leaders and pray to GOD to solve the problem you HELP create with your bad VOTE and bad THINKING.
Nigeria needs atleast 100 refineries, currently you have ONLY 3.
Just 10 more refineries alone will create job for 30, 000 people or more.
The whole country needs to just shutdown and tackle one problem at a time.
The Nigerian problems are so simple to SOLVE but instead everybody is trying to survive on their own and praying to GOD for HELP.
What are people who got money investing in? when this opportunity is right there under people's eyes.