Method for production and upgrading of oil

Details Method for production and upgrading of oil Method for production and upgrading of oil

E - Fixed Constructions

21

B

E21B 43/40 (2006.01) C01B 3/36 (2006.01) C01B 3/50 (2006.01) E21B 43/16 (2006.01)

Patent

CA 2532811

An integrated process for production and upgrading of heavy and extra-heavy crude oil, comprising (a) reforming of hydrocarbons such as natural gas to produce hydrogen, CO2 and steam (b) separating the produced hydrogen from the CO2, steam and any other gases to give a hydrogen rich fraction and a CO2 rich fraction and steam, (c) injecting the steam alone or in combination with the CO2 rich fraction into a reservoir containing heavy or extra heavy oil to increase the oil recovery, and (d) upgrading/refining of the heavy or extra heavy oil to finished products by extensive hydroprocessing, comprising several steps of hydrocracking and hydrotreating (sulfur, nitrogen and metals removal as well as hydrogenation of olefins and aromatics), using the hydrogen rich fraction.

L'invention concerne un procédé intégré de production et de valorisation de pétrole brut lourd et extra-lourd, qui consiste à : (a) reformer des hydrocarbures tels quel le gaz naturel pour obtenir de l'hydrogène, du CO2 et de la vapeur ; (b) séparer l'hydrogène obtenu du CO2, de la vapeur et de tout autre gaz pour obtenir une coupe riche en hydrogène, une coupe riche en CO2 et de la vapeur ; (c) injecter la vapeur seule ou associée à la coupe riche en CO2 dans le réservoir contenant le pétrole lourd ou extra-lourd pour augmenter la récupération du pétrole ; et enfin, (d) valoriser/raffiner le pétrole lourd ou extra-lourd pour obtenir des produits finis par hydrotraitement prolongé, comprenant plusieurs étapes d'hydrocraquage (soufre, azote, enlèvement de métaux et hydrogénation d'oléfines et d'hydrocarbures aromatiques), au moyen de la coupe riche en hydrogène.

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