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Solution mining dawsonite from hydrocarbon containing formations with a chelating agent

  • US 7,556,095 B2
  • Filed: 10/20/2006
  • Issued: 07/07/2009
  • Est. Priority Date: 10/24/2005
  • Status: Expired due to Fees
First Claim
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1. A method for treating an oil shale formation comprising dawsonite, the method comprising:

  • providing heat from one or more heaters to the formation to heat the formation;

    producing hydrocarbon fluids from the formation;

    decomposing at least some dawsonite in the formation with the provided heat;

    providing a chelating agent to the formation to dissolve at least some dawsonite decomposition products; and

    producing the dissolved dawsonite decomposition products.

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