Helical coil annular access plug and abandonment
US10648279B2 · kind B2 · utility
7Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2018 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Apr 27, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for creating access to annular spacing during P&A operations is described. Specifically, helical coils are cut into one or more casings before the plugging material is set. The plugging material is able to exit the helical coils, forming multiple, small rock-to-rock seals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.