SYSTEMS AND METHODS FOR PRODUCING VISCOUS HYDROCARBONS
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United States of America Patent
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Issued Date -
Jul 16, 2015
app pub date -
Jan 13, 2015
filing date -
Jan 14, 2014
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Abandoned
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Abstract
An embodiment of a method for recovering viscous hydrocarbons from a reservoir in a subterranean formation, the method including (a) continuously injecting steam into the formation, (b) injecting a first amount of a solvent into the formation for a first period of time during (a), and (c) stopping the injection of the solvent during (a) and after (b). In addition, the method includes (d) determining the effectiveness of the solvent injected during (b), and (e) injecting a second amount of the solvent into the formation during a second period of time during (a). The second amount is chosen based on the determination in (d). Further, the method includes (f) reducing a viscosity of the hydrocarbons within the reservoir with the solvent during (b) and (e).
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