US oil giant ExxonMobil will increase its exploration acreage in Namibia by about 28 000 km2 following the signing of an agreement with the Namibian government and State-owned National Petroleum Corporation of Namibia (Namcor) for blocks 1710 and 1810, and farm-in agreements for blocks 1711 and 1811A. The agreement adds about seven-million net acres in four additional deepwater blocks to ExxonMobil’s portfolio.