On April 30, 2015, the Comisión Nacional de Hidrocarburos (CNH) released a revised version of the Bidding Guidelines for the First Tender published on December 11, 2014. This first tender seeks to auction fourteen (14) shallow water exploration and production blocks in the Gulf of Mexico under a production-sharing scheme.

The most relevant change in the recently revised Bidding Guidelines is the extension of the timeline for the CNH to review and publish the parties that will be prequalified to present bids.  As indicated in the timeline here, the dates have been extended from May 8 to May 20 and from May 15 to May 25, respectively.