Gel of an apolar medium, its use for the preparation of water-based drilling fluids
US5858928A · kind A · utility
48Cited by
15References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1995 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Nov 22, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q17/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a gel made of apolar medium including: PA1 an apolar medium, PA1 a "multichain" liquid surface-active agent in acidic form, soluble or dispersible in the said apolar medium, PA1 an agent for neutralizing the said "multichain" surface-active agent, PA1 from 0.2 to 5 molecules of water per molecule of "multichain" surface-active agent, PA1 optionally at least one emulsifying agent and/or a solid filler which is soluble or insoluble in the apolar medium. This gel may be employed for the formulation of water-based drilling fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.