Cementation product and use for cementing oil wells or the like
US6656265B1 · kind B1 · utility
137Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jul 17, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a cementing composition for an oil well or the like with porosity of less than 50%, and with a solid phase constituted by 35% to 65% (by volume) hollow microspheres, 20% to 45% Class G Portland cement, and 5% to 25% of Class G Portland micro-cement. The invention is used to cement conductor pipes in arctic zones or in deep water holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.