METHOD AND APPARATUS FOR GENERATING AND/OR HYDROTREATING HYDROCARBON FORMATION FLUIDS

摘要

Some embodiments relate to a method for producing, from sulfur-rich type IIs kerogen, a sweetened synthetic crude having a sulfur concentration of at most 1% wt/wt, a nitrogen concentration of at most 0.2% wt/wt and an API gravity of at least 30°. Hydrotreating is performed under only low-severity conditions of at most about 350 degrees Celsius and a maximum pressure of at most 120 atmospheres. In some embodiments, the feedstock to the hydrotreater comprises hydrocarbon pyrolysis liquids generated primarily by low temperature pyrolysis of the sulfur-rich type IIs kerogen. For example, the feedstock may be rich in easier-to-hydrotreat heterocyclic species. In some embodiments, it is possible to optimize the pyrolysis process by monitoring relative concentrations of the easier-to-hydrotreat heterocyclics and the harder-to-treat heterocyclics.

主权项

1. A oil derived from pyrolysis of type IIs kerogen and/or comprising between 0.05% wt/wt and 5% wt/wt olefins, wherein (i) the oil comprises at least 3% wt/wt sulfur, (ii) a majority of sulfur compounds of the oil are alkylthiophenes; (iii) a ratio between respective concentrations of alkylthiophenes and alkyldibenzothiophenes is at least 10 or at least 15 or at least 20 or at least 30; and (iv) a majority of alkylthiophenes of the oil are thiophene C4H4S or C1-C4 alkylhiophenes.