Downhole catalyst upgrades heavy oil

Experiments in the Liaohe oil fields, in northeastern China, indicate that placement of a catalyst downhole can improve cyclic steam, heavy-oil recovery.Results from seven wells showed that the technique upgraded the produced oil downhole by increasing the saturate and aromatic components and reducing the resin and asphaltene components.In the tests, average oil molecular weight and viscosity decreased.AquathermolysisThermal oil-recovery processes are effective for enhancing heavy-oil recovery. Steam injection reduces the oil viscosity and chemical reactions between steam and heavy oil have been observed to play an active role in the recovery process. These reactions induce the formation ...

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