Patent · US Active

Use of surfactant mixtures for tertiary mineral oil extraction

US7985718B2 · kind B2 · utility

17Cited by

7References

19Claims

0Family size

Assignee

BASF SE

Inventors

Ulrich Steinbrenner · Kohlhof, DE
Christian Bittner · Bensheim, DE
Oetter Günter · Bischofswerda, DE
Marcus Guzmann · Bad Windsheim, DE

Key dates

Filing date	Apr 21, 2009
Grant date	Jul 26, 2011
Priority date	—
Expiry date	Jul 10, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/584
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The use of a surfactant mixture comprising at least one surfactant having a hydrocarbon radical composed of from 12 to 30 carbon atoms and at least one cosurfactant having a branched hydrocarbon radical composed of from 6 to 11 carbon atoms for tertiary mineral oil extraction.

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