Shear thickening composition with polycarboxylic acid
US4663366A · kind A · utility
14Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1984 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Mar 6, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A shear thickening composition which comprises a water-in-oil emulsion having dispersed in the continuous, oily phase thereof, hydratable, water-expandable hydrophillic clay, wherein said oily phase has a polyamine derivative surfactant dissolved therein and the dispersed aqueous phase comprises an aqueous solution of a polyacrylamide and polycarboxylic acid. These compositions are useful as well control fluids and may be used in deep wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.