Shear thickening composition
US4442241A · kind A · utility
32Cited by
11References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1982 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Jun 28, 2002 |
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, said oily phase having dissolved therein a polyamine derivative surfactant and an oil-soluble amine. The aqueous phase will preferably have dissolved therein a polymer, preferably a polyacrylamide, which will flocculate and congeal the clay when same is mixed with water. 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.