Hydraulic cementing port collar with integral swivel-spline feature
US10036228B2 · kind B2 · utility
2Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 2015 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Apr 10, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Embodiments relate to methods and devices for improved liner drill-in operations. Specifically, embodiments may provide the capability to selectively allow rotation of the liner, even once a packer has been set. Typical embodiments might couple a port sealing collar (that can selectively seal or open a port in the liner) to a selectively lockable swivel joint, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.