Utilizing drilling fluid in well cementing operations
US5327968A · kind A · utility
124Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Dec 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides methods of cementing a well with a cementing composition utilizing a portion of the drilling fluid used to drill the well as a component in the cementing composition. The methods basically comprise forming a set-activated cementing composition comprised of water, silica fume, a dispersing agent, a set-activator, a set delaying additive and a portion of the drilling fluid, introducing the resulting set-activated cementing composition into the well and permitting the cementing composition to set into a hard mass therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.