Patent · US Active

Oligoglycerol fatty acid ester thickeners for oil-based drilling fluids

US8153562B2 · kind B2 · utility

14Cited by

30References

10Claims

0Family size

Assignee

Emery Oleochemicals GmbH · DE

Inventors

Heinz-Joachim Muller · Burgkirchen an der Alz, DE
Diana Maker · Mettmann, DE
Nadja Herzog · Korschenbroich, DE

Key dates

Filing date	Sep 12, 2008
Grant date	Apr 10, 2012
Priority date	—
Expiry date	Oct 19, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S507/904
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Oligoglycerol esters of fatty acids, preferably of unsaturated fatty acids, can be used as thickeners in oil-based drilling mud compositions. The oligoglycerides are preferably employed in invert drilling muds, the oily phase of which contains paraffins.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.