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Method and tool for radial alignment in horizontal well

IP.com Disclosure Number: IPCOM000247738D
Publication Date: 2016-Oct-03
Document File: 3 page(s) / 280K

Publishing Venue

The IP.com Prior Art Database

Abstract

A single ball bearing is free to move about within an annular groove in a sliding sleeve allowing it to stay at gravitational bottom no matter the rotation of the tool. When required, force acting upon the sleeve uncovers a slotted member and also moves the bearing axially until it contacts the slotted member which locks the bearing into its location, presumably the gravitational bottom of the annular groove minus slot deviation. The bearing, being trapped and half exposed from the slotted member, now acts as a lug. As the sleeve with groove continues to travel toward the bearing, a contour on the sleeve's O.D. contacts the bearing forcing the sleeve to align with the bearing during continued forward motion, thus aligning the sleeve gravitationally. Summary: A free bearing which finds the gravitational bottom of an annulus has been trapped and used as a lug to align a sleeve downhole. The sleeve can be part of a tool or part of further alignment features allowing the installation of other tools.

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Method and tool for radial alignment in horizontal well.

A single ball bearing is free to move about within an annular groove in a sliding sleeve allowing it to stay at gravitational bottom no matter the rotation of the tool. When required, force acting upon the sleeve uncovers a slotted member and also moves the bearing axially until it contacts the slotted member which locks the bearing into its location, presumably the gravitational bottom of the annular groove minus slot deviation. The bearing, being trapped and half exposed from the slotted member, now acts as a lug. As the sleeve with groove continues to travel toward the bearing, a contour on the sleeve's O.D. contacts the bearing forcing the sleeve to align with the bearing during continued forward motion, thus aligning the sleeve gravitationally. Summary: A free bearing which finds the gravitational bottom of an annulus has been trapped and used as a lug to align a sleeve downhole. The sleeve can be part of a tool or part of further alignment features allowing the installation of other tools.

As tooling and pipe may rotate during installation it may be difficult to accurately determine the position of equipment down hole. This tool and method of downhole alignment is utilized when axial positioning is required in a non-vertical well bore. Once the tool requiring alignment has reached depth, hydraulic pressure applied down hole shifts a sleeve (shear screws, detent fingers, or some other method of holdin...