Helical coil annular access plug and abandonment
US11905789B2 · kind B2 · utility
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35References
5Claims
0Family size
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Key dates
| Filing date | Jun 1, 2022 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jun 1, 2042 |
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.