Extraction of hydrocarbons from hydrocarbon-containing materials and/or processing of hydrocarbon-containing materials

  • US 9,102,864 B2
  • Filed: 03/31/2014
  • Issued: 08/11/2015
  • Est. Priority Date: 09/20/2007
  • Status: Active Grant
First Claim
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1. A method for increasing recovery of hydrocarbon-containing organic matter from a production well coupled to a hydrocarbon-containing sub-surface formation, the subsurface formation comprising hydrocarbon-containing material by contacting the hydrocarbon-containing organic matter with a substantially surfactant-free non-aqueous hydrocarbon-extracting composition comprising the steps of:

  • providing an injection well, said injection being in fluid communication with the sub-surface formation;

    providing said substantially surfactant-free non-aqueous hydrocarbon-extracting composition, wherein said composition consists essentially of a turpentine liquid;

    injecting the substantially surfactant-free non-aqueous hydrocarbon-extracting composition through the injection well and into the formation, wherein the substantially surfactant-free non-aqueous hydrocarbon-extracting composition and the hydrocarbon-containing organic matter from the hydrocarbon containing sub-surface formation form an extraction mixture comprising at least a portion of the hydrocarbon-containing organic matter extracted into turpentine liquid;

    recovering the extraction mixture from the formation through the production well; and

    separating the extraction mixture to produce a hydrocarbon product stream and a hydrocarbon-extracting liquid stream.

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