Nano-thermite well plug
US10871050B2 · kind B2 · utility
10Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2017 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A composition and methods for setting a plug for well bores undergoing plugging and abandonment operations. Methods include placing a blocking device below the plug location and creating a void space above the blocking device; placing a heat resistant base plate above the blocking device and introducing nano-thermite clusters and expandable bismuth alloy pellets into the void space; igniting the thermite and cooling the melted alloy to form a permanent plug in the void space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.