Glycol based drilling fluid
US6291405A · kind A · utility
97Cited by
18References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1998 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Mar 11, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to an improved glycol based aqueous drilling fluid. The drilling fluid of this invention has demonstrated utility in controlling and/or reducing swelling of clay formations in the drilling of subterranean wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.