Types of crude oil

PMI Comercio Internacional markets Maya, Isthmus, Olmeca, and Altamira crude oils in the Europe, the Americas and the Far East.

a) Maya
A heavy (21-22° API) and sour (3.4%  sulfur by weight) crude oil, which produces lower yields of gasoline and diesel in simple refineries 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. 
 
In order to maximize the economic value of this type of crude oil, its processing requires refineries with high conversion units which transform the crude heavy fractions (residue) 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) Isthmus
A medium (32-33° API) and sour (1.8% sulfur by weight) crude oil with good gasoline and intermediate distillates (diesel and jet fuel/kerosene) yields. The loading ports of Isthmus crude oil are: Dos Bocas, in the State of Tabasco; Salina Cruz, in the State of Oaxaca, and Pajaritos, in the state of Veracruz.
 
The highest economic value of this crude is obtained in refineries with FCC (Fluid Catalytic Cracker) units. Its quality is similar to Arab light crude and Russian Urals crude.
 
c) Olmeca
Olmeca is the lightest of Mexican the crude oils, with an API gravity of 38-39°, and a 0.73% to 0.95% sulfur content by weight, so it is considered a light, sour crude oil. Its characteristics make it a good feedstock for lubricants and petrochemicals. Olmeca crude cargoes are exported from Pajaritos, in the State of Veracruz.
 
d) Altamira
Altamira is a heavy crude, with a 15.5° to 16.5° API gravity, and a sulfur content of 5.5 to 6.0% by weight. As with Maya crude, Altamira has lower gasoline and diesel yields in simple refining schemes compared to lighter crude oils. Its physical-properties make it appropriate for asphalt production. Altamira crude cargoes are exported from the port of Tampico, in the State of Tamaulipas.
 
 
Typical Qualities of Mexican Crude Oils
 
Crude-Oil Type
Maya
Isthmus
Olmeca
Altamira
ºAPI (Gravity)
 
21.0-22.0
32.0-33.0
38.0-39.0
15.5-16.5
VISCOSITY (SSU 100 ºF)
 
320
60
38
1280-1750
WATER AND SEDIMENTS
 (% vol.)
0.5
0.5
0.5
1.0
SULPHUR (% weight)
 
3.4-3.8
1.8
0.73-0.95
5.5-6.0
Reid Vapor Pressure (lb/in2)
 
6.0
6.0
6.2
3.0
POUR POINT ( ºF)
-25
-35
-55
32
 


14/08/2013 7:00 Equipo portal
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