The development stages:Exploration drilling/2014-08.The onshore Amatlitán block covers an area of 230 square kilometers and is located in Mexico's Chicontepec basin. The block contains 34-44º API crude and has three operating wells in five fields: Amatitlán, Ahuatepec, Cacahuatengo, Coyol and Sitio. It also hosts the exploratory wells Amatitlán-1, 2, 3, Postectitla-1 and Vinazco-1. The Amatitlán block is part of the project Activo Integral Aceite Terciario del Golfo (ATG), established to develop the Chicontepec Paleochannel. The block was awarded to a consortium formed by local firms Vitol Energy Mexico and GPA Energy under an integrated services contract (known by its Spanish acronym, CIEP or ISC in English). As prescribed by the contract, exploration was scheduled to begin by October 2014.