Sureste Basin

The basin covers an area of 188,000 km2 (73,000 sq mi) and comprises proven reserves of 50 billion barrels of oil.

Sureste Basin covers an area of 188,000 km2 (73,000 sq mi), that extends from the Chiapas fold belt in the onshore southern limit, to the base of the Campeche Slope in the deep-waters region.

By 1930, around 50 exploration wildcats were made, allowing the discovery of several oil fields such as Tupilco, Tonala, and Nuevo Teapa.

[6] Offshore exploration started in 1949 after a marine geophysical survey of the Coatzacoalcos and Grijalva rivers was acquired.

[6] 2D seismic technology and better deep drilling techniques allowed the discovering of giant oil fields in the 1970s, such as Cactus, Samaria, Cunducuan, Iride, and Cantarell.