Drilling mud viscosifier
US4240915A · kind A · utility
32Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1978 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Jul 13, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Water-based, clay-free drilling fluids for use in drilling bore holes into subterranean formations having an aqueous mixture therein comprising water and an aluminum hydroxide agent. The aqueous phase of the drilling fluids has the aluminum hydroxide agent therein in an amount sufficient to impart non-Newtonian, pseudoplastic properties to the fluids when the fluids have a pH of at least about 8. The present invention further relates to an improved process of drilling bore holes into subterranean formations using the subject drilling fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.