The country has become the 53rd member state of the Norway-based Extractive Industries Transparency Initiative.
ExxonMobil, Shell, Chevron, Total, Repsol, BP and Statoil are among 16 firms registered to bid in Friday's auctions, which will offer exploration and production rights in one of the world's premier untapped oil plays.
US firm Valley Crossing will build an undersea pipeline to supply Mexico with natural gas, connecting to the Texas-Tuxpan line that is already under construction.
The government looks to take advantage of gas that is currently released into the atmosphere or flared.
The Canadian energy and mining company has updated its guidance for oil and electricity production in the island.