(Corrects headline to say Savannah is buying, not selling, interest in assets)
June 2 (Reuters) - Africa-focused Savannah Energy said on Wednesday it was in exclusive talks with U.S. oil producer Exxon Mobil Corp for a proposed acquisition of its upstream and midstream assets in Chad and Cameroon.
The proposed deal would include a 40% operated interest in the Doba oil project, and a 40% interest in the Chad-Cameroon oil transportation pipeline, Savannah Energy said.
London-listed shares of Savannah Energy were last up nearly 7% at 19.25 pence. (Reporting by Yadarisa Shabong in Bengaluru; Editing by Shounak Dasgupta)