Systems and methods for activating a downhole tool
US-2015354320-A1 · Dec 10, 2015 · US
Device for actuating a bottom tool
US8936112B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8936112-B2 |
| Application number | US-201213594220-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 24, 2012 |
| Priority date | Jan 11, 2007 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A downhole tool may include a generally hollow piston having a trigger element extending therefrom, the piston configured to slide along an axial cavity extending through a tubular body of the tool. The trigger element may move from a first position where the trigger engages a support on the body and the piston is fixed, to a second position where the trigger disengages and the piston is released. The tool may also include a generally tubular relief sleeve releasably coupled with the piston using a shear pin, while the trigger element is in the first position, and disposed between the trigger and an extension of the piston, to allow the sleeve to slide between the trigger and the extension after shearing of the pin. The piston, sleeve and pin may be configured to allow the sleeve to release from the piston in response to the shearing of the pin.
First claim
Opening claim text (preview).
The invention claimed is: 1. A downhole tool, comprising: a generally tubular body having an axial cavity extending therethrough; a hollow piston configured to slide along the axial cavity; an activation device for activating the hollow piston, the activation device comprising: a trigger element integral with the hollow piston, the trigger element being movable from a first position, in which the hollow piston is fixed by the trigger element, towards a retracted second positi…
Assignees
Inventors
Classifications
Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
- E21B10/322Primary
Fixed Constructions · mapped topic
- E21B23/04Primary
Fixed Constructions · mapped topic
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Frequently asked questions
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- What does patent US8936112B2 cover?
- A downhole tool may include a generally hollow piston having a trigger element extending therefrom, the piston configured to slide along an axial cavity extending through a tubular body of the tool. The trigger element may move from a first position where the trigger engages a support on the body and the piston is fixed, to a second position where the trigger disengages and the piston is releas…
- Who is the assignee on this patent?
- Dithmar Erik, Fanuel Philippe R, Moi Stein Eric, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification E21B10/322. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Jan 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).