Process for recovering heavy oil using multiple effect...

Details Process for recovering heavy oil using multiple effect... Process for recovering heavy oil using multiple effect...

2008-02-21

2009-08-25

Bates, Zakiya W. (Department: 3676)

Wells

Processes

Distinct, separate injection and producing wells

C166S267000, C166S303000, C166S371000

Reexamination Certificate

active

07578345

ABSTRACT:
A method for recovering heavy oil including recovering an oil-water mixture from a well and separating oil from the oil-water mixture to produce an oil product and produced water. The produced water is separated into a series of produced water streams. Each produced water stream is directed into each of a plurality of interconnected evaporators in a multiple effect evaporator. A first produced water stream is heated and vaporized to form a first vapor stream. The first vapor stream then heats and vaporizes a second produced water stream to form a second vapor stream. This process may continue wherein the second vapor stream heats and vaporizes a third produced water stream. The vapor streams are condensed to form a distillate that is directed to a steam generator. The steam generator then heats the distillate and produces steam to inject into an oil injection well.

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patent: 2307819 (2005-04-01), None
patent: 2005054746 (2005-06-01), None

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