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Method of extracting bitumen from oil sands with a propylene oxide capped glycol

  • US 10,138,719 B2
  • Filed: 03/20/2015
  • Issued: 11/27/2018
  • Est. Priority Date: 03/27/2014
  • Status: Active Grant
First Claim
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1. A bitumen recovery process comprising a step of treating oil sands with a propylene oxide capped glycol ether, wherein:

  • the oil sands are recovered by surface mining and transported to a treatment area for the step of treating the oil sands with the propylene oxide capped glycol ether or the oil sands are recovered by in situ production and in situ treatment occurs during the step of treating the oil sands with the propylene oxide capped glycol ether, andthe propylene oxide capped glycol ether is described by the following structure;


    RO—

    (C2H4O)n

    CH2CH(CH3)OHwherein R is a linear, branched, cyclic alkyl, phenyl, or alkyl phenyl group and n is 1 to 10.

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