Patent · US Expired

Thinners for invert emulsions

US7435706B2 · kind B2 · utility

49Cited by

121References

20Claims

0Family size

Assignee

Halliburton Energy Services, Inc. · US

Inventors

Heinz Mueller · Monheim, DE
Jeff Kirsner · Humble, US
Kimberly Burrows · Kingwood, US

Key dates

Filing date	Dec 29, 2000
Grant date	Oct 14, 2008
Priority date	—
Expiry date	Oct 10, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/36
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of reducing the viscosity of oil-based drilling fluids and well service fluids at low temperatures and a thinner compound for use in such drilling fluids and well service fluids is disclosed. The method comprises adding to said drilling fluids or well service fluids a thinner having the formula:R—(C2H4O)n(C3H6O)m(C4H8O)k-Hwhere R is a saturated or unsaturated, linear or branched alkyl radical having about 8 to about 24 carbon atoms, n is a number ranging from about 1 to about 10, m is a number ranging form about 0 to about 10, and k is a number ranging from about 0 to about 10.

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