I know, I met a nigerian electric grids engineer. Nigerian but living in London and working there.Nigeria has four refineries. They simply are not producing (albeit they are undoing a substantive rebuild ATM), probably because there's a lot of money (including rent-seeking) to be made from importation of petroleum products.
Furthermore, a Nigerian is building the world's biggest single-train refinery, which should be commissioned this year and should turn Nigeria from an importer of products to an exporter of same.
Meanwhile, in what appears ironic, Nigeria actually exports electricity to Togo, Burkina Faso, Benin Republic and Niger Republic, but that's probably to keep those nations from damming the River Niger.
Btw, Nigeria has more than enough educated citizens to whip the nation into ship shape. It is the innovation hub of Africa and its graduates are strewn across the globe, but suffers complex structural and institutional issues.