Foamed compositions and methods of use in subterranean zones
US6619399B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2003 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Mar 12, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/925
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The current invention provides improved methods and compositions for completing a well bore. In one aspect, the current invention provides a process for preparing a foamed cement composition. The process utilizes air to foam the cement after the air has been treated to lower the oxygen content below that concentration necessary to support combustion. Additionally, the current invention provides a process for completing a well bore using foamed cement wherein the foam is generated with reduced oxygen content air. Finally, the current invention provides a foamed cement composition wherein the gaseous portion of the composition is air having a reduced oxygen content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.