Delay coating for wellbore isolation device
US11448033B2 · kind B2 · utility
1Cited by
3References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jan 10, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1243
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A wellbore isolation device includes a mandrel, a sealing element disposed around at least a portion of the mandrel, and a delay coating disposed on at least a portion of an outer surface of the sealing element. The sealing element includes a swellable material and the delay coating covers a cross-linked polymer. The delay coating is configured to swell or degrade in a wellbore fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.