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Anti-wear device for composite packers and plugs

a composite packer and plug technology, applied in the direction of sealing/packing, fluid removal, borehole/well accessories, etc., can solve the problems of compromising the design and functionality of the tool, increasing wear on the engineering grade plastic parts of the tool, etc., to minimize damage and minimize the damage to the components

Inactive Publication Date: 2014-10-16
HALLIBURTON ENERGY SERVICES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is an improvement of a packer tool used in oil and gas wells. The tool has components made of plastic that are protected from damage during installation to minimize damage to the wellbore wall. The plastic components have surfaces that resist wear and abrasion resistant materials are embedded in components of the tool to minimize damage. Wear-resistant inserts are installed in the retaining elements of the tool to extend radially outward as far as or further than the other components of the packer tool. This results in a more durable and reliable downhole tool for use in wellbore construction.

Problems solved by technology

However, teeth on the slips cannot and do not contact the wellbore wall during run in of the tool and if they did they would function to penetrate the wellbore wall and interfere with the movement of the tool in the well.
This contact causes increased wear on the engineering grade plastics parts of this tool.
This wear or abrasion can compromise the design and functionality of the tool.

Method used

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  • Anti-wear device for composite packers and plugs
  • Anti-wear device for composite packers and plugs
  • Anti-wear device for composite packers and plugs

Examples

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Embodiment Construction

[0021]In the description that follows, like parts are marked throughout the specification and drawings with the same reference numerals, respectively. The drawings are not necessarily to scale and the proportions of certain parts have been exaggerated to better illustrate details and features of the invention. In the following description, the terms “upper,”“upward,”“lower,”“below,”“downhole” and the like as used herein shall mean in relation to the bottom or furthest extent of the surrounding wellbore even though the well or portions of it may be deviated or horizontal. The terms “inwardly” and “outwardly” are directions toward and away from, respectively, the geometric center of a referenced object. Where components of relatively well known designs are employed, their structure and operation will not be described in detail.

[0022]Referring now to FIGS. 1 and 2, representative downhole packer tool illustrated in the run state. The tool 2 has a hollow mandrel 4 extending through the ...

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Abstract

A downhole packer tool having components made essentially of non-metallic engineering grade plastic materials. The tool having an apparatus for anchoring the tool in an annular structure. The tool has a mandrel; a slip assembly positioned on the mandrel, the slip assembly having at least one spacer ring and a plurality of slip elements; and at least one wear resistant insert installed in an outer surface of the tool and extending outwardly therefrom whereby the at least insert button is abrasion resistant upon setting yet has favorable drillability characteristics upon drilling the tool from the wellbore.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]None.BACKGROUND[0002]1. Technical Field[0003]This application relates generally to downhole tools for use in oil and gas wellbores, and more particularly, to such tools having one or more drillable components made from non-metallic materials, such as engineering grade plastics and composite materials. This application relates particularly to downhole packers and plugs.[0004]2. Background Art[0005]In the drilling or reworking of oil wells, a great variety of downhole tools are used to block or channel flow in the wellbore. For example, but not by way of limitation, it is often desirable to close off the well or to seal the annulus around tubing or other pipe in the wellbore casing. Downhole tools referred to as packers tools are designed for these general purposes and are well known in the art of producing oil and gas. As used herein the term, “packer tool” refers to a tool that has an expandable seal or packing element that radially expan...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B33/12
CPCE21B33/12E21B33/1208
Inventor MANKE, KEVIN RAY
Owner HALLIBURTON ENERGY SERVICES INC
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