a) Maya
It’s a heavy (21-22° API) and sour (3.4% of sulphur weight) crude oil, thereby producing lower yields for gasoline and diesel in simplified refining schemes when compared to lighter crudes. The loading ports of Maya are: Cayo Arcas, approximately 162 km off the coast of Ciudad del Carmen, in the State of Campeche; Dos Bocas, in the State of Tabasco; and Salina Cruz, in the State of Oaxaca.
To maximize the economic value of this type of crude oil, its processing requires refineries with high conversion units which transform the heavy elements (residues) of the crude oil into products with a higher value for the refiner. To this end, PMI Comercio Internacional has signed several long-term supply agreements with refiners that have high-conversion units, or that have agreed to expand the complexity of its refineries to obtain the highest value from Maya crude oil.
b) Istmo
It is a medium (32-33° API) and sour (1.8% of sulphur weight) crude oil with good gasoline and intermediate distillates (diesel and jet fuel/kerosene) yields. The loading ports of Istmo crude oil are: Dos Bocas, in the State of Tabasco; Salina Cruz, in the State of Oaxaca, and Pajaritos, in Veracruz.
The highest economic value of this crude is obtained in refineries with FCC (Fluid Catalytic Cracker) units. Its quality is similar to the Arab light crude and the Russian Ural crude.
c) Olmeca
It is the lightest of Mexican crude oils, with an API gravity of 38-39°, and a 0.73% to 0.75% Sulphur contents in weight, and therefore, it is a light and sweet crude. Its characteristics make it a good product for lubricants and petrochemicals. Olmeca crude cargoes are exported from Pajaritos, in the State of Veracruz.
d) Altamira
It is a heavy crude, with a 15.5° to 16.5° API gravity, and a Sulphur contents of 5.5 to 6.0% in weight. As with Maya crude, this type of crude oil offers a lower gasoline and diesel performance in simple refining schemes compared to lighter crude oils. Its physical-chemical characteristics make it appropriate for asphalt production. Altamira crude cargoes are exported from the port of Tampico, in the State of Tamaulipas.