Hydrostatic tubular lifting system
US9732591B2 · kind B2 · utility
1Cited by
20References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2013 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Dec 17, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one embodiment, a tubular lifting system for lifting a wellbore tubular includes an outer tubular; an inner tubular disposed in the outer tubular; an annular chamber defined between the inner tubular and the outer tubular; and a tubular piston selectively movable in the annular chamber, wherein the wellbore tubular is connected to the tubular piston and movable thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.