Enlarging well bores having tubing therein
AssigneeCDX Gas, LLC
InventorJoseph Zupanick
Life of this patent
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Abstract
An underreamer for forming a cavity within a well bore includes a fluid motor having a first body and a second body arranged about a longitudinal axis. The first body is adapted to rotate about the longitudinal axis in relation to the second body when fluid is passed between the first and second bodies. The fluid motor further defines a longitudinal tubing passage adapted to allow passage of the fluid motor over a tubing string. At least one cutting arm is coupled to rotate with the first body, and radially extendable into engagement with an interior of the well bore to form the cavity.
Claims16
An underreamer for forming a cavity within a well bore, comprising:
- a fluid motor having a first body and a second body arranged about a longitudinal axis, the first body adapted to rotate about the longitudinal axis in relation to the second body when fluid is passed between the first and second bodies, the fluid motor further defining a longitudinal tubing passage adapted to allow passage of the fluid motor over a tubing string;
- and
- at least one cutting arm coupled to rotate with the first body, the at least one cutting arm radially extendable into engagement with an interior of the well bore to form the cavity.
A method of forming a cavity within a well bore, comprising:
- passing an underreamer over a tubing string residing in the well bore to a desired location of the cavity;
- and
- flowing fluid through the underreamer to operate the underreamer in forming the cavity.
Dependencies are inferred from the claim text.