Led by centrist party PRI president Enrique Pena Nieto, the ruling party and allies are expected to have enough votes to vote on measures to allow for greater participation from private firms since the oil industry was nationalised in 1938, speakers said at a breakfast on the subject hosted by the Mayer Brown law firm.

While the terms of future business agreements remain undecided, they are expected to be more favourable than the current fee-for-service structure offered in limited mature fields.