Dual inline sliding sleeve valve
US8800661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2012 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Nov 23, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sliding sleeve device features a first sleeve that can be shifted with a dropped object on a seat and applied pressure to open a housing port. A second sleeve is in line with the first sleeve and be shifted to straddle the housing ports that we exposed when the opening sleeve was shifted initially. Snap rings or other locking devices can be used to hold the closing sleeve in the shifted position with the housing ports closed. The closing sleeve can also be shifted with a shifting tool that is run for example on coiled tubing. The opening sleeve can also optionally be shifted with a tool in an uphole direction to open the housing ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.