In situ heat treatment of a tar sands formation after drive process treatment
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United States of America Patent
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Sep 21, 2010
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N/A
app pub date -
Apr 18, 2008
filing date -
Apr 20, 2007
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Abstract
A method for treating a tar sands formation includes providing a drive fluid to a hydrocarbon containing layer of the tar sands formation to mobilize at least some hydrocarbons in the layer. At least some first hydrocarbons from the layer are produced. Heat is provided to the layer from one or more heaters located in the formation. At least some second hydrocarbons are produced from the layer of the formation. The second hydrocarbons include at least some hydrocarbons that are upgraded compared to the first hydrocarbons produced by using the drive fluid.
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