Multi-function downhole tool

a multi-functional, downhole technology, applied in the direction of drilling rods, drilling pipes, borehole/well accessories, etc., can solve the problems of long and costly operation, differential sticking of pipes to the wellbore wall, and high cost of operation
US20060207796A1Inactive Publication Date: 2006-09-21STABLE SERVICES
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
STABLE SERVICES
Publication Date
2006-09-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

A multi-function downhole apparatus is described which comprises a tubular main body having at least one recess formed in its outer surface. The recess is adapted to receive any of a set of interchangeable tool elements, which include stabiliser blades of different radial sizes, cleaning elements, roller reaming tool elements, a hole opener tool element, and a drilling casing shoe element. In particular, the apparatus allows drilling operations and wellbore cleaning operations to be carried out using the same tool body.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to U.S. Provisional Patent Application No. 60 / 661,385, filed Mar. 14, 2005, which is incorporated herein by reference.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to downhole tools used in wellbores, and, in particular, to downhole tools used in rotary operations.

[0004] 2. Background of the Related Art

[0005] A number of different types of downhole tools and equipment are used in the oil and gas exploration and production industry during the drilling of a wellbore, lining of the drilled bore with a metal casing / liner, and in the subsequent completion of the well to gain access to subterranean hydrocarbon bearing rock formations.

[0006] These tools and equipment include, for example, drill strings used in the drilling of a wellbore; stabilisers and centralisers used for centralising equipment in a borehole or downhole tubing; reamers and other cutting t...

Claims

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