Actually, Nigeria has one of Africa's largest LNG plants at Bonny Island. Two production trains were completed in 1999 and construction of more continues.
As far as 737 groundings, 'This Day'reports that all airlines operating 737s in Nigeria, with the exception of Aerocontractors (who have no 737 100 or 200s) have been affected
Nigerian 737 Grounding
The cynic in me says that all will revert to the unacceptable norm once the publicity dies down, but I really do hope that, just for once, these 2 tragic events so close together will lead to a genuine reform within the Nigerian aviation sector.