Valve responsive to fluid properties
US7980265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2007 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Apr 13, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7736
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve for downhole use has the ability to throttle between fully open and closed and is fully variable in positions in between. The valve is preferably responsive to flowing fluid viscosity and uses a three dimensional flow through restrictor in combination with a relatively movable cover. At a given flow, a higher viscosity fluid will create a greater relative movement and make it possible for flowing fluid to bypass more of the flow through member. In a particular application involving production from a zone, an array of such valves can allow more production where the viscosity is higher and less production where the viscosity drops due to, for example, water production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.