Cement mixing apparatus
US4890927A · kind A · utility
1Cited by
5References
7Claims
0Family size
Inventors
Key dates
| Filing date | May 2, 1989 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | May 2, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/3065
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for improving the characteristics of a fluid and in particular of a cement slurry for the cementing of wells, particularly of oil wells, wherein it consists in applying to this fluid an energy of between 4.8 and 6.3 kJ/kg, by incorporating adapted pressure drops, in line, before the well head and at the outlet of a high-pressure pump, said pressure drops being substantially independent of the flowrate. The invention also relates to a device for carrying out this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.