UpstreamPemex claims 50% interest in Zama offshore oilfield from Talos EnergyeditorMay 20, 2021May 20, 2021 by editorMay 20, 2021May 20, 20210520 Mexican state-owned oil company, Petroleos Mexicanos, Pemex, is claiming a majority interest of more than the 50% of the offshore oilfield, Zama, from Talos Energy;...