Method for providing thixotrophy to fluids downhole
US8689869B2 · kind B2 · utility
5Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2009 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Apr 1, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/0085
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An encapsulated thixotropy agent may be added to aqueous well service fluids. Such fluids include drilling fluids, cement slurries and polymer pills. The well service fluid may be subjected to shearing action downhole, causing the thixotropy agent to be released and imparting thixotropy to the fluid. The thixotropy agent comprises a dry suspension of synthetic layered silicates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.