Expanding thermite reactions for downhole applications
US11149517B2 · kind B2 · utility
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8References
27Claims
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Key dates
| Filing date | Jan 2, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatus for forming platforms and flow control features in underground wells is described, using modified thermite reactions to form a ceramic plug in place. The reactive package is engineered to expand laterally, filling the well, and may be used to form a ceramic bridge plug, porous ceramic screen sections, or mitigate lost circulation of drilling fluids. These objectives are achieved through the design of the reactive package and through use of carefully chosen reaction additives that control the molten product rheology, solidification temperature, and pore generations and sustainment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.