Filtration media including porous polymeric material and degradable shape memory material
US11913309B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2020 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Dec 7, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid control device includes a support structure configured to be deployed to a selected location in a borehole, and a filtration medium disposed at the support structure and configured to filter a fluid, the filtration medium configured to be compacted from an initial shape to a compacted shape prior to deployment in the borehole. The filtration medium includes a first polymeric material configured to withstand a temperature at the selected location, the first polymeric material forming a porous structure including a plurality of fluid passages, and a second polymeric material including a shape memory polymer disposed within the fluid passages, the shape memory polymer configured to expand in the plurality of fluid passages and cause the filtration medium to expand in the borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.