Snubber for Downhole Tool

a tool and tool body technology, applied in the field of downhole tools, can solve the problems of damage to measurement tools, vibration and mechanical shock of downhole tools in the bottom hole assembly, and the electronic and mechanical devices of tools may be particularly sensitive to mechanical shock and vibration, so as to reduce damage and wear

Inactive Publication Date: 2019-04-25
NAT OILWELL DHT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The frustum-shaped sleeve effectively reduces mechanical shock and vibration damage across multiple degrees of freedom, enhancing the reliability and lifespan of downhole tools by distributing shock over a larger surface area and maintaining performance in extreme temperatures.

Problems solved by technology

During rotation of the drill bit, downhole tools in the bottom hole assembly may be subjected to vibrations and mechanical shocks that can damage the measurement tools, communication along the drill string, or connections between downhole tools and other downhole components.
The electronic and mechanical devices in tools may be particularly sensitive to mechanical shock and vibration.
Damage to electronics in downhole tools may reduce reliability and life of the tool.
Failure of the tool can result in costly downtime due to halted drilling operations and tool repairs before drilling may resume.

Method used

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  • Snubber for Downhole Tool
  • Snubber for Downhole Tool
  • Snubber for Downhole Tool

Examples

Experimental program
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Embodiment Construction

[0043]In aspects, the present disclosure is related to downhole drilling operations. Specifically, the present disclosure is related to protection of components of downhole tools that may be sensitive to the mechanical shock and vibration that occurs during drilling operations and may reduce the operating lifetime of the downhole tools. The present invention is susceptible to embodiments of different forms. There are shown in the drawings, and herein will be described in detail, specific embodiments with the understanding that the present invention is to be considered an exemplification of the principles and is not intended to limit the present invention to that illustrated and described herein.

[0044]FIG. 1 shows a diagram of a drilling system 100 that includes a drilling rig 110 disposed on a surface 120 and above a borehole 130 in an earth formation 140. Disposed in the borehole 130 is drill string 150 with a drill bit 160 at the bottom of the borehole 130. Above the drill bit 160...

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Abstract

An apparatus for reducing mechanical shock and vibration in a downhole tool includes a frustum-shaped sleeve configured to be disposed between the downhole tool and another downhole component. The frustum-shaped sleeve is made of a mechanical shock absorbing material and includes a central axis, a radially inner surface, and a radially outer surface. The radially inner surface or the radially outer surface of the frustum-shaped sleeve includes a pyramidal frustum-shaped surface with four or more circumferentially adjacent sides. The downhole tool or the downhole component has a pyramidal frustum-shaped surface configured to mate with the pyramidal frustum-shaped surface of the frustum-shaped sleeve.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is continuation of U.S. application Ser. No. 15 / 306,007 filed Oct. 21, 2016, and entitled “Snubber for Downhole Tool, which is a 35 U.S.C. § 371 national stage entry of PCT / US2015 / 028186, filed Apr. 29, 2015, and entitled “Snubber for Downhole Tool,” which claims the benefit of Provisional U.S. Patent Application No. 61 / 986,871, filed Apr. 30, 2014, and entitled “Snubber for Downhole Tool,” each of which is incorporated herein by reference in its entirety for all purposes.BACKGROUND OF THE DISCLOSURE1. Field of the Disclosure[0002]This disclosure relates to the field of downhole tools associated with rotary drilling in earth formations, especially to reduction of damage and wear due to mechanical shock and vibration.2. Description of the Related Art[0003]Rotary drilling in earth formations is used to form boreholes for obtaining materials in the formations, such as hydrocarbons. Rotary drilling involves a drill bit dispos...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): E21B17/07E21B47/01
CPCE21B17/07E21B47/011E21B17/1078E21B17/10E21B47/017
InventorDEERE, R. PAULCHANDOS, DAVIDMOTZING, GRAHAMMENDEZ, PATRICKTHOMAS, JACOB D.
OwnerNAT OILWELL DHT