Apparatus for use in well abandonment
US11525329B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2018 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Oct 29, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A plug for plugging wells, and in particular oil and gas wells, is provided. The plug has a plug body formed from an outer metal tube of a reduced thickness. The plug also has reinforcement means, attached to an inner surface of the outer tube, that give the plug a cross-sectional structural strength that is at least equivalent to that of a thicker metal tube. The plug has a central heater receiving void located along the axis of the plug to enable a plug deployment heater to be received therein. Also provided is a plug assembly with a variable cross-sectional area in a plane perpendicular to the plane in which the assembly is deployed during the plugging of underground conduits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.