Nano-thermite well plug
US11480026B2 · kind B2 · utility
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7References
6Claims
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Assignee
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Key dates
| Filing date | Oct 21, 2020 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Oct 21, 2040 |
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 is described. Methods of setting the plug are also described 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.