US 9,868,891 B2 · Methods for producing emulsifiers for oil-based drilling fluids

Abstract

Methods for making emulsifiers, emulsified drilling fluids, and methods for using the same are provided. In one or more embodiments, the method for making an emulsifier can include mixing a tall oil and a triamide. The triamide can have the chemical formula: where: x, y, and z are integers independently selected from 1 to 10, R1 is a C8-C20 alkyl, a C8-C20 alkenyl, a C8-C20 dialkenyl, or a C8-C20 alkynyl, R2 is H or independently selected for each [(CH2)xNR2(CH2)y] unit, where R4 is a C1-C3 alkylene or a C1-C3 alkylene alcohol, and where at least one R2 is and R3 is a C8-C20 alkyl, a C8-C20 alkenyl, a C8-C20 dialkenyl, or a C8-C20 alkynyl.

Claims20

Dependent claims

A method for making an emulsifier, comprising:

mixing a tall oil and a triamide to provide a mixture, wherein the triamide is prepared by reacting a diamidoamine with a saturated dicarboxylic acid, a saturated acid anhydride, or a mixture thereof at a temperature of about 120° C. to about 175° C.;
reacting the tall oil and the triamide with a base to provide a neutralized mixture, wherein the base comprises an alkali metal hydroxide, an alkaline earth metal hydroxide, an alkali metal oxide, an alkaline earth metal oxide, or a mixture thereof, and
spray drying the neutralized mixture to provide a spray dried emulsifier.

Dependencies are inferred from the claim text.

Methods for producing emulsifiers for oil-based drilling fluids

Life of this patent

Methods for producing emulsifiers for oil-based drilling fluids

Life of this patent

Abstract

Claims20