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METHOD OF DRILLING FROM A SHAFT FOR UNDERGROUND RECOVERY OF HYDROCARBONS

  • US 20080017416A1
  • Filed: 04/19/2007
  • Published: 01/24/2008
  • Est. Priority Date: 04/21/2006
  • Status: Active Grant
First Claim
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1. An excavation method, comprising:

  • (a) forming a substantially vertically inclined shaft;

    (b) at a selected level of the shaft, forming a plurality of recess cavities extending approximately radially outward from the shaft, the selected level of the shaft being adjacent to or near a hydrocarbon-containing formation; and

    (c) drilling at least one well outward from a face of each of the recess cavities, each of the wells penetrating at least a portion of the hydrocarbon-containing formation

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