
Gas is flared from a tower on an oil drilling rig operated by Petroleos Mexicans (Pemex) in the Ku-Maloob-Zaap oilfield at Campeche Bay off the coast of Ciudad del Carmen, Mexico, on Friday, Aug. 1, 2014. Mexico's Senate is scheduled to hold a vote tonight on the final measure to implement the constitutional overhaul approved in December ending Pemex's exclusive right to crude oil production, now in its 76th year. Photographer: Susana Gonzalez/Bloomberg
Susana Gonzalez/Bloomberg