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Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells

  • US 7,165,634 B2
  • Filed: 10/02/2003
  • Issued: 01/23/2007
  • Est. Priority Date: 10/14/1994
  • Status: Expired due to Fees
First Claim
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1. A method for forming a wellbore, comprising:

  • providing a drill string having a casing portion;

    drilling the wellbore using the drill string;

    locating the casing portion within the wellbore;

    pumping a one-way valve down the drill string; and

    placing a physically alterable bonding material in an annulus formed between the casing portion and the wellbore.

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