Multi-positioned sliding sleeve valve
US6722439B2 · kind B2 · utility
47Cited by
16References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2002 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Mar 26, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/102
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole choke in the form of a sliding sleeve valve operable in a plurality of positions including fully open, fully closed, and positions in between, is disclosed. It features a hydraulic control system that, in one embodiment, provides the motive force to move the sliding sleeve a predetermined amount for a given applied control pressure. Further increments in applied pressure result in further predetermined movements of the sliding sleeve. In another embodiment, the sliding sleeve lands in a series of grooves in the surrounding housing depending on the degree of pressure applied to the control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.