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Methods for forming long subsurface heaters

  • US 8,536,497 B2
  • Filed: 10/13/2008
  • Issued: 09/17/2013
  • Est. Priority Date: 10/19/2007
  • Status: Expired due to Fees
First Claim
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1. A method for forming a longitudinal subsurface heater, comprising:

  • longitudinally welding an electrically conductive sheath of an insulated conductor heater along at least one longitudinal strip of metal; and

    forming the longitudinal strip into a tubular around the insulated conductor heater with the insulated conductor heater welded along the inside surface of the tubular.

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