Atora was discovered by Elf Gabon in 1997. The field was carved out of the onshore RGA 11 exploration block. The project was sanctioned in 1999 and first production was in 2001.Development drilling and de-bottlenecking work was carried out on the field from 2004 to 2005. This increased production and injection capacity. In 2011, Total started further de-bottlenecking work on Atora and one infill well was completed in 2013.