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Irregular pattern treatment of a subsurface formation

  • US 8,434,555 B2
  • Filed: 04/09/2010
  • Issued: 05/07/2013
  • Est. Priority Date: 04/10/2009
  • Status: Expired due to Fees
First Claim
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1. A method of heating a subsurface hydrocarbon containing formation, comprising:

  • providing heat flux per volume to a first portion of a subsurface hydrocarbon containing formation, wherein the heat flux per volume is provided by two or more first heat sources positioned in the first portion; and

    providing heat flux per volume to a second portion of the subsurface hydrocarbon containing formation, wherein the heat flux per volume is provided by two or more second heat sources positioned in the second portion, wherein the heat flux per volume provided by the two or more second heat sources is greater than the heat flux per volume provided by the two or more first heat sources, wherein the second portion is positioned below the first portion, and wherein the second heat sources are separate from the first heat sources.

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