Downhole sleeve with dissolvable release
US11149521B2 · kind B2 · utility
2Cited by
1References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Sep 29, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A delayed opening sliding sleeve system includes a first sleeve that prevents initiating the dissolution or erosion of a dissolvable or erodible retainer. The first sleeve is opened by a pressure cycle to expose or otherwise initiate the dissolution of a retainer. The retainer holds a second sleeve in place. The second sleeve is held closed against subsequent pressure cycles until such time as the retainer is dissolved or otherwise removed. With the retainer removed the second sleeve may be opened allowing fluid communication between the exterior and the interior of the sleeve system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.