Monobore shoe

Details Monobore shoe Monobore shoe

2005-01-18

2005-01-18

Tsay, Frank (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S207000, C166S208000

Reexamination Certificate

active

06843322

ABSTRACT:
A method of attaching a tubular to an existing tubular in a well without reducing the inside diameter of the well is described. A shoe is attached to the lower end of the existing lowermost casing or tubular, generally prior to the casing being cemented or otherwise secured in the wellbore. The shoe has a diameter larger than the inside diameter of the casing or tubular to which it is attached. Subsequently, a liner is run in until its top end is in the enlarged diameter region of the shoe. A hanger can be optionally used. The liner is expanded into the enlarged diameter so that the net result is that the inside diameter in the wellbore is not reduced by the addition of the liner.

REFERENCES:
patent: 2017451 (1935-10-01), Wickersham
patent: 5390742 (1995-02-01), Dines et al.
patent: 5794702 (1998-08-01), Nobileau
patent: 5829524 (1998-11-01), Flanders et al.
patent: 6470966 (2002-10-01), Cook et al.
patent: 6695063 (2004-02-01), Lauritzen et al.
patent: 6698517 (2004-03-01), Simpson et al.
patent: 6702029 (2004-03-01), Metcalfe et al.
patent: 6758278 (2004-07-01), Cook et al.
patent: WO 0104520 (2001-01-01), None
patent: WO 0229199 (2002-04-01), None

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