US 2003/0221841 A1 · Monobore shoe

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.

Claims20

Dependent claims

A well completion method, comprising:

running in casing having a first inside diameter;
providing a shoe adjacent the lower end of said casing;
running a tubular string through said casing until the upper end of the tubular string is adjacent said shoe;
expanding at least a portion of said tubular string into supporting engagement with said shoe so that a second inside diameter of said tubular string, after expansion, in said shoe is at least as large as said first inside diameter of said casing.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

10/442,788Filed 21 May 2003

Priority

31 May 2002

Published

4 Dec 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification3 codes

E21B 43/106
Of expandable casings, screens, liners, or the like: couplings or joints therefor
E21B 43/103
Setting of casings, screens, liners or the like in wells: of expandable casings, screens, liners, or the like
E21B
Earth or rock drilling

Monobore shoe

Life of this patent

Monobore shoe

Life of this patent

Abstract

Claims20