Light weight high temperature well cement compositions and methods
US5900053A · kind A · utility
183Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Aug 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides light weight high temperature well cement compositions and methods. The compositions are basically comprised of calcium phosphate cement, water, a foaming agent, a foam stabilizer and a gas present in an amount sufficient to form a foam having a density in the range from about 11.5 to about 15 pounds per gallon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.