This study is focused on the recognition of the geological structure of the province of Maï-Ndombe in DR Congo based on the analysis and interpretation of gravity data. These data were processed using regionalresidual separation methods, horizontal and vertical derivatives, and upward continuation. The integration of all the geological information resulting from the interpretation of gravity maps has enabled us to develop a structural map that improves our knowledge of the geological structures of major petroleum interest in this area. Reading this structural map shows us that the Inongo high is the highest geological structure while the Lokoro depocenter is the deepest geological structure in this province. These two structures being close, a part of the oil formed in the Lokoro depocenter could easily migrate along the large faults to be trapped in the upper stages located in the Inongo high. As such, these two structures represent the most important oil targets in this region and should be the subject of much more seismic exploration.

Keywords : Gravity, Geological Structure, Petroleum, Depocenters.