Trinidad and Tobago's NOC expects the move will increase revenue.
Leftist ruling party candidate Lenín Moreno was the winner of Sunday's vote, but former banker Guillermo Lasso has alleged foul play and is challenging the results.
International companies land contracts for urea and propylene projects.
Natural gas has more than doubled its share of the Latin American power matrix since the early 2000s, and is used to generate more than a quarter of the region's annual electricity supply.
With the liberalization of fuel imports and the retail segment in Mexico, fuel prices will drop to similar levels to those in Texas within a couple of years, according to Beau Freyou, director of Houston-based IVG Energy.
US producers allege that biodiesel imports from Argentina surged 464% from 2014-16, due to "illegal trade activities." The Argentine exporters' chamber says the allegations are unfounded.
A motion approved by a Mexican congressional transparency commission requests authorities to review the legality of all the public works contracts and concessions awarded to the scandal-hit Brazilian builder or any of its subsidiaries.
The Brazilian petrochemical firm, which has been a target of the Lava Jato corruption case - was due to publish its full-year earnings statement on Wednesday, having previously scheduled the announcement in February.