Cluster opening sleeves for wellbore treatment and method of use
US8215411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2009 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Jun 28, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole sleeve has a sliding sleeve movable in a bore of the sleeve's housing. The sliding sleeve is movable from a closed condition to an opened condition when a ball is dropped in the sleeve's bore and engages an indexing seat in the sliding sleeve. The sliding sleeve in the closed condition prevents communication between the bore and the port, and the sleeve in the opened condition permits communication between the bore and the port. In the closed condition, keys of the seat extend into the bore to engage the ball and to move the sliding sleeve open. In the opened condition, the keys of the seat retract from the bore so the ball can pass through the sleeve to another cluster sleeve or to another isolation sleeve of an assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.