Downhole stroking tool
US-10435977-B2 · Oct 8, 2019 · US
Signal operated tools for milling, drilling, and/or fishing operations
US8991489B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8991489-B2 |
| Application number | US-43607709-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 5, 2009 |
| Priority date | Aug 21, 2006 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A mud motor for use in a wellbore includes: a stator; a rotor, the stator and rotor operable to rotate the rotor in response to fluid pumped between the rotor and the stator; and a lock. The lock is operable to: rotationally couple the rotor to the stator in a locked position, receive an instruction signal from the surface, release the rotor in an unlocked position, and actuate from the locked position to the unlocked position in response to receiving the instruction signal.
First claim
Opening claim text (preview).
The invention claimed is: 1. A disconnect tool for use in a string of tubulars, comprising: a tubular mandrel having a threaded inner surface; a tubular housing having a plurality of openings formed radially through a wall thereof; an arcuate dog disposed in each opening, each dog having an inclined inner surface and a portion of a thread corresponding to the mandrel thread and radially movable between an engaged position and a disengaged position, wherein: abutment of each…
Assignees
Inventors
Classifications
Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
- E21B31/113Primary
Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
- E21B23/00Primary
Fixed Constructions · mapped topic
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Frequently asked questions
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- What does patent US8991489B2 cover?
- A mud motor for use in a wellbore includes: a stator; a rotor, the stator and rotor operable to rotate the rotor in response to fluid pumped between the rotor and the stator; and a lock. The lock is operable to: rotationally couple the rotor to the stator in a locked position, receive an instruction signal from the surface, release the rotor in an unlocked position, and actuate from the locked …
- Who is the assignee on this patent?
- Redlinger Thomas M, Koithan Thomas, Vreeland Christopher M, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification E21B31/113. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Mar 31 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).