Variable choke valve
US7377327B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2005 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jun 21, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Embodiments of the present invention generally provide a more reliable variable choke flow control valve. In one embodiment, a variable choke valve for use in a wellbore is provided. The valve includes a tubular housing having an axial bore therethrough and a port through a wall thereof. The valve further includes a tubular sleeve having an axial bore therethrough and first and second holes through a wall thereof and disposed within the housing. The first hole is larger than the second hole, and the sleeve is actuatable among three positions: a first position where the first hole is aligned with the port, a second position where the second hole is aligned with the port, and a third position where the sleeve wall is aligned with the port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.