Methods and apparatus for drilling with casing

Details Methods and apparatus for drilling with casing Methods and apparatus for drilling with casing

E - Fixed Constructions

21

B

E21B 7/20 (2006.01) E21B 7/04 (2006.01) E21B 23/04 (2006.01) E21B 23/06 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2589600

In one embodiment, a method of forming a wellbore includes running a liner drilling assembly into the wellbore, the liner drilling assembly having a liner, a conveying member, one or more connection members, and a drilling member. The method includes temporarily suspending the liner at a location below the rig floor; releasing the conveying member and the drilling member from the liner; re-- connecting the conveying member to the liner; releasing the liner from its location of temporary suspension; and advancing the liner drilling assembly.

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