Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1995-07-11
1998-10-20
Bell, Mark L.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208108, 208124, 208145, 208289, 208370, 422127, 422128, 166247, 166249, 20415715, 20415742, 20415762, 507140, 507143, 507269, 507271, C01G 4700, E21B 4300, C01B 5300, C09K 700
Patent
active
058242147
ABSTRACT:
Heavy crude oil containing at least 1% by weight water is hydrotreated and upgraded while being produced downhole in a production well. During production the heavy crude oil containing water is subjected to sonic energy at a low frequency of 400 Hz to 10 kHz downhole in the presence of a metal hydrogenation catalyst that causes the water in the crude oil to react and form hydrogen which then hydrotreats and upgrades the heavy crude oil during production. In another embodiment, if the heavy crude oil does not contain water, the hydrogen may be formed in-situ by contacting the heavy crude oil downhole with a chemical compound comprising ammonia, hydrazine and formic acid that in the presence of a metal hydrogenation catalyst and sonic energy causes the chemical compound to react and form hydrogen which then hydrotreats the heavy crude oil during production. Suitable catalysts include nickel on zinc dust, platinum on carbon and palladium on carbon, preferably nickel on zinc dust. The hydrotreated and upgraded heavy crude oil has improved properties making it easier to refine and transport by pipeline. The upgrading includes reducing the amount of asphaltenes and resins in the heavy crude oil and increasing the amount of aromatics and saturates.
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Davis R. Michael
Paul James M.
Bell Mark L.
Furr Jr. Robert B.
Hailey Patricia L.
Keen Malcolm D.
Mobil Oil Corporation
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