The French alone are sinking FIVE Billion intonations... ... Ugandan oil development; plus let us not forget they have the Chinese as partners.
No surprise the Chinese have been big investors/players in Africa for a long time and the French had colonies there too and have also had their fingers in these pies. So I would think they all will pop to the surface (pun intended) sooner than later.
As a comparable, yes I know there are big differences but I use Uganda as a worst case scenario, see the below quote from a past article about Uganda:
"The project, which could get the green light within days, is a rare example of a frontier oil development at a time when most major companies are cutting spending. It would also cement the French energy giant’s position as the leading player in Africa among major international oil and gas companies, even as the company says it’s making the transition to cleaner energy."