Well cap method and apparatus
US7469742B2 · kind B2 · utility
5Cited by
19References
20Claims
0Family size
Inventor
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jun 6, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/037
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A gas well cap seal assembly adapted to seal the casing bowl of a gas well and to pressurize the annulus region between the inner surface of the well bore and the outer surface of the well casing which is filled with wet cement. The pressurized annulus aids in the prevention of forming gas bubbles and gas leakage paths in the annulus region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.