Hydrothermal cement and method of cementing well bores
US3990903A · kind A · utility
19Cited by
3References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1975 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | Apr 16, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hydrothermal cement composition consisting essentially of (a) a polyvalent metal ion source, (b) water, and (c) a hydratable silica source wherein the silica becomes available for chemical combination with the polyvalent metal salt upon application of heat. A method of cementing a string of pipe in a bore hole including the steps of preparing such a cement composition, pumping the cement composition into the annular space between the string of pipe and the walls of the bore hole, and allowing the cement to set due to the temperature of the bore hole or by passage of time or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.