QatarEnergy has expanded its upstream portfolio in Namibia by acquiring a 27.5% working interest in Block 2813 under a new agreement with Harmattan Energy Limited (HEL), the operator of the block. Announced on Sunday, the agreement confirms HEL, an indirect subsidiary of Chevron Corporation, as the majority stakeholder with a 52.5% interest. The remaining partners, Trago Energy Limited and the National Petroleum Corporation of Namibia (NAMCOR), each hold a 10% interest, according to QatarEnergy’s press