Metallic soaps of modified fatty acids and rosin acids and methods of making and using same
US7271132B2 · kind B2 · utility
4Cited by
78References
3Claims
0Family size
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Key dates
| Filing date | Mar 5, 2004 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Apr 24, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A superior powder form of a metallic soap for enhancing the properties of an invert emulsion drilling fluid may be prepared by a dry process saponification reaction. The process includes mixing a source of metal cations with the product of a Diels-Alder reaction of dienophiles with fatty acids and/or resin acids and allowing the mixture to react. Heating the mixture increases the rate of reaction. The solid product is ground to form a powder. The properties of the drilling fluid that may be improved by adding the soap include filtration control, fluid loss control, emulsification and emulsion stability, and electrical stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.