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

Inactive Publication Date: 2006-09-21
STABLE SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0040] By inclining the attachment axis the need to provide a screw or bolt extending the entire depth of the removable tool element is av...

Problems solved by technology

Changing out tools that have become worn or introducing new tools to the string to deal with unexpected problems can therefore result in a lengthy and costly operation.
Although prior art systems have addressed some important issues, problems persist with current equipment causing much downtime during drilling operations.
One particular such problem during rotary drilling is differential sticking of...

Method used

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Examples

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Embodiment Construction

[0068] The present invention overcomes many of the prior art problems associated with downhole apparatus. The advantages, and other features of the invention disclosed herein, will become more readily apparent to those having ordinary skill in the art from the following detailed description of certain preferred embodiments taken in conjunction with the drawings which set forth representative embodiments of the present.

[0069] Reference is made firstly to FIGS. 1A, 1B and 1C, in which downhole apparatus in accordance with a first embodiment of the invention is shown, generally depicted at 10. As will be described in more detail below, the downhole apparatus 10 may take the form of one of a number of different types of downhole tools or equipment. However, in general terms, the downhole apparatus 10 comprises a tubular main body 12; at least one flow channel 14 extending part-way along a length of the body 12 and a plurality of raised portions or ribs 15 formed on the body 12. The rib...

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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.

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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Application Information

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IPC IPC(8): E21B17/10E21B17/00E21B37/02
CPCE21B10/26E21B17/00E21B17/10E21B21/00E21B37/02E21B17/14E21B37/00
Inventor STEWART, ARTHUR
Owner STABLE SERVICES
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