Cementitious composition for the cementation of oil wells
US5489574A · kind A · utility
12Cited by
7References
10Claims
0Family size
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Key dates
| Filing date | Jul 18, 1994 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Jul 18, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/906
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A cementitious composition for oil well cementation able to prevent fluid migration comprises water, hydraulic cement, surfactant or organic dispersant, and carbon black.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.