For an ordinary layman Chad might not come across as an important oil producer. Landlocked, susceptible to political infighting and one of the poorest nations on earth, Chad’s oil sector developments might even be unknown for people in the commodity business even though crude makes up 96 percent of the African nation’s exports. Chad’s flagship crude, the heavy sweet Doba, has been making history lately – for the first time in history, Doba traded above Dated Brent on 19 March, making it the first heavy crude to accomplish…