High temperature wellbore cement slurry
US5226961A · kind A · utility
319Cited by
18References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1992 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Jun 12, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cement slurry is provided which is useful to cement wellbores in high temperature service. A high alumina cement is used. The density of the slurry is relatively low as a result of using a low density aggregate. In a preferred embodiment, the low density aggregate is graphite. The graphite additionally imparts a significantly improved thermal and electrical conductivity to the hardened cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.