Sintana Energy Inc. has announced a 57% increase in the contingent resources of the Mopane oil discovery offshore Namibia, raising the estimate to 1.38 billion barrels of oil equivalent (boe).
The upgrade, based on recent exploration and appraisal drilling, increases Sintana’s indirect net interest to approximately 67 million barrels of oil equivalent (mmboe) through its 4.9% carried stake in Petroleum Exploration Licence (PEL) 83.
According to the company, the revised resource estimate was disclosed in Galp Energia’s Integrated Management Report 2025 and reflects continued progress in unlocking the potential of the Mopane complex.
Galp currently operates PEL 83, although TotalEnergies is in the process of farming in and is expected to assume operatorship ahead of a planned three-well drilling campaign scheduled for the second half of 2026. The project is targeting a final investment decision in 2028 and first oil by 2032.
“Over the past two weeks, it has been extremely encouraging to see a number of positive catalysts unfold across our portfolio. In Namibia, as the holder of a carried 4.9% indirect interest in PEL 83, we benefit from a substantial 57% increase in the Mopane contingent resource base, taking our interest to 67 mmboe,” the company said.
Further upside potential remains, with TotalEnergies identifying opportunities for additional resource growth, including a possible inboard extension of Mopane and two newly identified prospects, Quiver and Sobreiro.
Sintana said it is fully carried on the costs of the upcoming drilling programme by both TotalEnergies and Galp.
“This comes ahead of a three-well drilling campaign that TotalEnergies is planning to commence later this year, which we expect will further expand what is already a world-scale project as it progresses towards FID in 2028 and first oil in 2032,” the company said.
Under the current structure, the Mopane block is held by TotalEnergies (40%), Galp (40%), the National Petroleum Corporation of Namibia (Namcor) (10%) and Custos Investments (10%). Sintana holds a 59% interest in Custos Investments, giving it indirect exposure to the licence.
