Silica-based drilling mud comprising glycoside lubricants with amino-linked alkyl chains
US7320951B2 · kind B2 · utility
2Cited by
9References
8Claims
0Family size
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Key dates
| Filing date | Apr 19, 2001 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | Apr 19, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The drilling mud with a lowered coefficient of friction having a silicate-based mud and a lubricant selected from the group consisting of: glycosides, alkylpolyalkoxyalcohols, alcohol ester polymers, amine phosphates, starch and combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.