Metal seal for liner drilling
US11365611B2 · kind B2 · utility
15Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2018 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Nov 9, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B36/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems and methods of forming a seal employ a robust metal sealing unit for tubulars used in rotary drilling. Specifically, eutectic alloy is used to seal a tubular to a wellbore after drilling. A downhole heater melts the alloy, allowing the alloy to expand and drain before it cools and solidifies between the wellbore and tubular, forming a gas tight seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.