Inwardly swelling seal
US9163478B2 · kind B2 · utility
0Cited by
1References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2012 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Dec 27, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device and method that allows a gravel slurry to placed in a wellbore from the toe towards the heel to reduce the pressure acting upon the heel of the wellbore during the gravel placement operation. By reducing the pressure acting upon the heel gravel slurry may be placed in longer sections of the wellbore in a single operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.