Hydraulic power stroker for shifting of sliding sleeves
US5636694A · kind A · utility
6Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Apr 27, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention allows downhole shifting of one or more sleeves, having the same or different dimensions, while running a running tool on coiled tubing. The power stroker feature anchors the running tool to the body of the sleeve housing for proper orientation. Hydraulic pressure is used to stroke the sleeve. A feedback feature is provided to determine from the surface whether the sleeve has fully shifted. The stroking components are resettable upon withdrawal of hydraulic pressure and an emergency shear release is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.