Slag for cementing a well, in particular an oil well
US6332920A · kind A · utility
6Cited by
10References
35Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 9, 1999 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Aug 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention concerns the cementation of a well. A slag is used which comprises a hydraulic binder, a microsilica, a mineral addition, a superplasticizing agent and water, under defined granulometry and percentage conditions. The solublefigure relates to three compositions according to the invention but which differ by the origin of the microsilica. The invention applies notably to the cementation of an oil well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.