Silicone oil-based drilling fluids
US5707939A · kind A · utility
51Cited by
14References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1995 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Sep 21, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to an improved continuous phase for a drilling fluid and specifically a silicone continuous phase which is non-polluting and substantially non-toxic. Preferred silicones for use in the invention are dimethylsiloxane polymers. In the drilling fluid compositions, suitable emulsifiers, wetting agents, viscosifiers, weight materials and fluid loss additives may be added in conjunction with water and/or a brine phase for desired rheological properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.