Drilling mud viscosification agents based on sulfonated ionomers
US4447338A · kind A · utility
44Cited by
11References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 12, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Aug 12, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A new family of viscosification agents based on sulfonated ionomers is described for oil-based drilling muds. The resultant muds display good viscosity characteristics and good stability when formulated from ionomers having an appropriate sulfonate level, cation type, and cosolvent content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.