Cement mixing with vibrator
US4979829A · kind A · utility
8Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Jun 26, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C5/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A casing string is cemented in a borehole of a well. The cement is prepared by introducing water and dry cement material into a mixing vessel. The water and dry cement material are mixed in the mixing vessel to form a cement slurry. The mixing is accomplished by agitating the slurry to cause the slurry to circulate within the vessel, and while agitating the slurry, transmitting vibrational energy into the slurry and thereby aiding in the wetting of the dry cement material in the slurry. This also aids in removing entrained air from the slurry. The slurry is then pumped into an annulus between the casing string and the boreholes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.