Wellbore isolation barrier including negative thermal expansion material
US10975658B2 · kind B2 · utility
3Cited by
23References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | May 17, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A downhole tool for forming a seal in a wellbore includes a housing configured for attachment to a string usable to transport the tool in the wellbore to a target depth; a holding chamber disposed within the housing, the holding chamber configured to receive a combination of a metal, a metal oxide, and a negative thermal expansion material in the holding chamber; an initiator operable to initiate a chemical reaction; a pressure applicator configured to apply pressure to seal material in the holding chamber; and an opening in a surface of the housing through which the seal material is expellable from the holding chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.