Well sealing via thermite reactions
US9494011B1 · kind B1 · utility
3Cited by
27References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2016 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Jul 8, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B36/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A platform is formed in a well below a target plug zone by lowering a thermite reaction charge into the well and igniting it, whereby the products of the reaction are allowed to cool and expand to form a platform or support in the well. A main thermite reaction charge is placed above the platform and ignited to form a main sealing plug for the well. In some embodiments an upper plug is formed by igniting an upper thermite reaction charge above the main thermite reaction charge. The upper plug confines the products of ignition of the main thermite reaction charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.