Aqueous wellbore service fluids
US4725372A · kind A · utility
166Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1983 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Jan 6, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/926
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A wellbore service fluid is provided which contains water, a water soluble electrolyte and as a thickening agent at least one of an amine, a salt of an amine, or quaternary ammonium salt which functions to increase the viscosity of the fluid in the presence of said electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.