Viscous damping systems for hydrostatically set downhole tools
US10400534B2 · kind B2 · utility
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10References
18Claims
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Assignee
Inventors
Key dates
| Filing date | May 28, 2015 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jun 6, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/128
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for activating a downhole tool may include a mandrel, a first piston disposed about the mandrel and defining a piston chamber therebetween, a flow restrictor positioned in the piston chamber and separating the piston chamber into an upper chamber located uphole of the flow restrictor and a lower chamber located downhole of the flow restrictor, and a second piston disposed in the upper chamber. The flow restrictor may define at least one orifice extending axially therethrough and, a damping fluid may reside in the piston chamber downhole from the second piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.