Non-magnetic openhole whipstock
US-2024279989-A1 · Aug 22, 2024 · US
Mud flow back valve
USRE45641E · US · E1
| Field | Value |
|---|---|
| Publication number | US-RE45641-E |
| Application number | US-201313967090-A |
| Country | US |
| Kind code | E1 |
| Filing date | Aug 14, 2013 |
| Priority date | Oct 3, 2003 |
| Publication date | Aug 4, 2015 |
| Grant date | Aug 4, 2015 |
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Abstract
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A valve for downhole use allows flow of mud or completion fluids but closes when subjected to produced hydrocarbons. The flow through the valve is through an annular passage that features a sleeve preferably made of rubber. The passage remains open during completion operations, but when hydrocarbons are produced the rubber swells and the passage is closed off. Applications include completions involving long horizontal runs and small inside diameter laterals where access to a sliding sleeve with coiled tubing or a wireline run tool is not practical.
First claim
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We claim: 1. A valve assembly for fluid flow control downhole, comprising: a valve body having a passage therethrough; a valve member in said body selectively operable between an open and a closed position based on a change in the composition of the fluid contacting said valve member; a screen having an inner passage such that when said valve member is in said open position flow in the well can pass through said screen inner passage and when said valve member is in said closed…
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Frequently asked questions
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- What does patent USRE45641E cover?
- A valve for downhole use allows flow of mud or completion fluids but closes when subjected to produced hydrocarbons. The flow through the valve is through an annular passage that features a sleeve preferably made of rubber. The passage remains open during completion operations, but when hydrocarbons are produced the rubber swells and the passage is closed off. Applications include completions i…
- Who is the assignee on this patent?
- Henriksen Knut H, Misiewicz Cecilie T, Baker Hughes Inc
- What technology area does this patent fall under?
- Primary CPC classification E21B33/12. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Aug 04 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (E1). 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).