Porvenir is a oil drilling company that has been extracting oil from the region around the town of Kuwaq Yaku before Lara Croft gets there during the events of Shadow of the Tomb Raider. The company seems to have left in a hurry as much of their equipment can still be found in the jungle around the town. There is even a pipeline that runs through Kuwaq Yaku. Later on Lara has to fight her way through the refinery, the Porvenir Oil Fields - also once owned by the company.
From several Documents found in the village of Kuwaq Yaku which were seemingly written by Abby Ortiz we can conclude, that Porvenir did quite a lot of damage to the community and the environment: The river seems to be polluted so much that the water is no longer drinkable and after they suddenly left town following a price drop in oil products most of the people are out of work. Some have turned to pillaging the archaeological sites that surround the town, attracting some shady characters like Omar.