Scleroglucan based drilling mud
US5612294A · kind A · utility
3Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Jan 17, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/206
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Base composition for water-based drilling muds allowing the number and the amount of the other constituents of the mud to be restricted. In addition to the base solvent, fresh water, sea water or salt water, the said base composition comprises scleroglucan as viscosity agent, the mycelium which produced it and bentonite or an equivalent in limited amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.