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Slip Assembly for Anchoring Downhole Plugs and Retainers

a technology of downhole plugs and retainers and assembly, which is applied in the direction of sealing/packing, earth-moving drilling, and well accessories, etc., can solve the problems of additional inherent risk of loss or damage, costly fishing operations, etc., and achieve the effect of reducing such risk, easy and efficient breakag

Inactive Publication Date: 2018-02-15
BLACKHAWK SPECIALTY TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a slip assembly for use in oil or gas wells that can be easily manufactured and installed. The invention eliminates the need for conventional retention devices that can obstruct slips from properly anchoring to a casing wall and become damaged or detached, resulting in costly fishing operations and additional risk of loss or damage. The invention also allows for easier and more efficient drilling, milling, or breaking apart of plugs compared to conventional bridge plugs.

Problems solved by technology

Further, such bands or other conventional retention devices can often become damaged / broken, allowing slip members to become detached and fall within a wellbore, thereby resulting in costly fishing operations and / or additional inherent risk of loss or damage.

Method used

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  • Slip Assembly for Anchoring Downhole Plugs and Retainers
  • Slip Assembly for Anchoring Downhole Plugs and Retainers
  • Slip Assembly for Anchoring Downhole Plugs and Retainers

Examples

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Embodiment Construction

[0019]FIG. 1 depicts a side perspective view of a slip assembly 100 of the present invention in a non-engaged or “running-in” configuration, such as when said slip assembly 100 comprises part of a downhole plug assembly and is being conveyed in a wellbore on wireline, continuous tubing or jointed pipe string. It is to be observed that slip assembly 100 can be installed in connection with a downhole plug assembly well known to those having skill in the art; such plug assembly can comprise multiple slip assemblies 100, as well as at least one elastomeric sealing member that can be selectively engaged to form a fluid pressure seal against the inner surface of a surrounding wellbore.

[0020]As depicted in FIG. 1, slip assembly 100 of the present invention comprises a plurality of wedge shaped slip members 10 operationally attached to push ring 20. Said wedge shaped slip members 10 are moveably disposed on inclined ramp surfaces 31 of cone member 30, although said slip members 10 can be se...

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PUM

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Abstract

A downhole plug assembly can be installed at a desired location within a subterranean wellbore that is capable of isolating one portion of the wellbore from another, while sealing fluid pressure within the wellbore from at least one direction. The plug assembly can include certain components constructed of non-metallic material that can be drilled, milled or mechanically broken up more quickly and efficiently than conventional wellbore plugs, thereby facilitating removal of said plug assembly when desired.

Description

CROSS REFERENCES TO RELATED APPLICATIONS[0001]THIS APPLICATION CLAIMS PRIORITY OF UNITED STATES PROVISIONAL PATENT APPLICATION SERIAL NO. 62 / 373,419, FILED AUG. 11, 2016, INCORPORATED HEREIN BY REFERENCE.STATEMENTS AS TO THE RIGHTS TO THE INVENTION MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT:[0002]NONEBACKGROUND OF THE INVENTION1. Field of the Invention[0003]The present invention pertains to a downhole assembly including, without limitation, a drillable plug assembly that can be installed at a desired location within a subterranean wellbore. More particularly, the present invention pertains to a plug assembly that is capable of providing a fluid pressure seal within a wellbore, while being capable of being drilled, milled or mechanically broken up more efficiently than conventional wellbore plugs. More particularly, the present invention pertains to a plug that can permit selective fluid pumping through said plug (including, without limitation, as a cement retainer).2. B...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B33/1295E21B33/12E21B33/134
CPCE21B33/1295E21B33/1204E21B33/1208E21B33/134E21B33/1291
Inventor THORNTON, HANSELARABIE, BLAKERUFFO, TONY
Owner BLACKHAWK SPECIALTY TOOLS
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