Stage cementer packer
US11566489B2 · kind B2 · utility
1Cited by
37References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2021 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Jun 4, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A stage cementing tool has a mandrel defining a central flow passage and a plurality of fully open cement flow ports. A packer disposed about the mandrel is movable from an unset to a set position. An opening sleeve is movable in the mandrel from a closed position to an open position in which the flow ports are exposed to allow flow therethrough. The opening sleeve is operable to move the setting sleeve to set the packer against the wellbore as it moves in the mandrel from the closed to the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.