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Method and apparatus for drilling with casing

  • US 7,140,445 B2
  • Filed: 03/05/2004
  • Issued: 11/28/2006
  • Est. Priority Date: 09/02/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for use with a top drive comprising:

  • a pivotable mechanism connected to a lower end of the top drive;

    a top drive adapter connected proximate to a lower end of the pivotable mechanism and movable toward and away from the top drive by the pivotable mechanism, the top drive adapter capable of transferring torque to a wellbore tubular; and

    a tubular transport apparatus connected to a lower end of the top drive adapter, wherein the tubular transport apparatus is adapted to deliver the wellbore tubular into engagement with the top drive adapter.

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