Modified polygalactomannans as oil field shale inhibitors
US5646093A · kind A · utility
39Cited by
19References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1996 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Aug 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B37/0087
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polygalactomannans containing a hydrophilic substituent and a hydrophobic substituent are useful as oil shale inhibitor compositions in oil well drilling fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.