Methods of cementing high temperature wells and cement compositions therefor
US6796378B2 · kind B2 · utility
108Cited by
31References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Mar 7, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides light weight high temperature well cement compositions and methods. The compositions are basically comprised of calcium aluminate, ASTM class F fly ash, sodium polyphosphate, a cationic derivatized starch fluid loss control additive and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.