Emulsion, method for the production thereof and use thereof

Patent metadata

Field	Value
Publication number	US-11034878-B2
Application number	US-201716308678-A
Country	US
Kind code	B2
Filing date	Jun 2, 2017
Priority date	Jun 10, 2016
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

The invention relates to an emulsion containing or consisting of
(A) 40.00 to 97.98 wt. % of at least one hydrocarbon, (B) 2.00 to 59.98 wt. % of water or an aqueous solution of a salt which does not fall under the following definition according to (C) and (C) 0.02 to 8.00 wt. % of a salt of an amino amide of a fatty acid, containing at least one primary, secondary or tertiary amino group, and an acid component of general formula (I)

in which
R 1 is a linear or branched, saturated or mono-unsaturated or poly-unsaturated hydrocarbon radical with 1 to 40 C atoms,
R 2 is an alkylene radical or arylalkylene radical with 2 to 20 C atoms and
X is a radical which contains at least one acid group,
m=0 or 1, n=1 to 30,

wherein the weight proportions of components (A), (B) and (C) relate to the sum of the masses of these components and this is 100 wt. %. The invention also relates to a method for the production of the emulsion, to an oil-based drilling mud and to a method for creating and stabilizing a drill hole.

First claim

The invention claimed is:

1. An emulsion comprising:
(A) 40.00 to 97.98 wt. % of at least one hydrocarbon,
(B) 2.00 to 59.98 wt. % of water or an aqueous solution of a salt which does not fall under the following definition as claimed in (C) and
(C) 0.02 to 8.00 wt. % of a salt, which is the reaction product of an amino amide of a fatty acid, containing at least one primary, secondary or tertiary amino group, and an acid component of general formula (I)

in which
R 1 is a linear or branched, saturated or mono-unsaturated or poly-unsaturated hydrocarbon radical with 1 to 40 C atoms,
R 2 is an alkylene radical or arylalkylene radical with 2 to 20 C atoms, which is the same or different in the n repeating units and contains maximum one ether oxygen atom and
X is a radical which contains at least one acid group which is selected from carboxylic acid groups, phosphonic acid groups and phosphoric acid groups,
m=0 or 1,
n=1 to 30,
wherein the weight proportions of components (A), (B) and (C) relate to the sum of the masses of these components and this is 100 wt. %.

2. The emulsion as claimed in claim 1 , wherein R 1 is an alkyl radical or alkenyl radical with 4 to 24 C atoms.

3. The emulsion as claimed in claim 1 , wherein R 1 is an alkyl radical or alkenyl radical with 6 to 20 C atoms and m=0.

4. The emulsion as claimed in claim 1 , wherein R 2 is an alkylene radical with 2 to 4 C atoms and contains only carbon and hydrogen.

5. The emulsion as claimed in claim 1 , wherein the radical X corresponds to general formula (II)

in which R 3 is a saturated or unsaturated divalent hydrocarbon radical, or the radical X corresponds to general formula (III)

in which o=1 to 6.

6. The emulsion as claimed in claim 5 , wherein in general formula (II) R 3 represents a group selected from —CH 2 —CH 2 —, —CH═CH— and a phenylene group,
or in general formula (III) o=1 or 2.

7. The emulsion as claimed in claim 1 , wherein the acid component has been produced by reacting a fatty acid with a polyalkylene glycol in a molar ratio of 0.8:1 to 1.2:1 to form an intermediate product which has on average one hydroxyl group per molecule, and further reaction of the intermediate product with a dicarboxylic acid or a dicarboxylic acid anhydride to form an acid half-ester.

8. The emulsion as claimed in claim 1 , wherein the acid component has been produced by alkoxylation of a fatty alcohol and subsequent reaction of the OH groups of the intermediate product obtained with a reactant selected from the group comprising carboxyalklating agents, phosphorylating agents and dicarboxylic acids or dicarboxylic acid anhydrides.

9. The emulsion as claimed in claim 1 , wherein the acid component has been produced by alkoxylation of a fatty alcohol with ethylene oxide and/or propylene oxide and subsequent reaction of the OH groups of the intermediate product obtained with a reactant, wherein the reactant comprises at least one of chloroacetic acid, phosphorus pentoxide, polyphosphoric acid, maleic anhydride, succinic anhydride, or combination thereof.

10. The emulsion as claimed in claim 1 , wherein the amide component is a fatty acid amino amide which can be produced by reacting a fatty acid with an aliphatic polyamine having at least 2 amino groups.

11. The emulsion as claimed in claim 1 , it contains
(A) 69.50 to 89.50 wt. % of at least one hydrocarbon,
(B) 10.00 to 30.00 wt. % of water or an aqueous salt solution and
(C) 0.50 to 5.00 wt. % of a salt of an amino amide of a fatty acid and an acid component of formula (I), wherein the weight proportions of components (A), (B) and (C) relate to the sum of the masses of these components and this is 100 wt. %.

12. The emulsion as claimed in claim 1 , wherein the at least one hydrocarbon comprises at least one hydrocarbon of synthetic, vegetable, animal or petrochemical origin.

13. The emulsion as claimed in claim 1 , wherein the aqueous salt solution contains water and at least one of a halide, carbonate, sulfate, phosphate, formate, acetate, citrate, lactate, malate, tartrate, hydroxide of at least one alkali metal or alkaline earth metal or sub-group metal, or combination thereof.

14. A method for the production of an emulsion selected from the group of water-in-oil emulsions and oil-in-water emulsions as claimed in claim 1 , the method comprising homogenizing an aqueous component (B) and at least one hydrocarbon (A) in the presence of a salt (C) with application of shear energy.

15. An oil-based drilling mud containing components (A), (B) and (C) as claimed in claim 1 and at least one of a rheology-control agent, filler, inorganic thixotropic agent, weighting agent, wetting auxiliarie, crack-remedying agent, corrosion-protection agent, additive for setting an alkaline medium, or combination thereof.

16. A method for creating and stabilizing a drill hole for the preparation and/or carrying out of recovery of petroleum and/or natural gas, the method comprising applying an emulsion as claimed in claim 1 to the drill hole.

17. A method for creating and stabilizing a drill hole for the preparation and/or carrying out of recovery of petroleum and/or natural gas, the method comprising applying an oil-based drilling mud as claimed in claim 15 to the drill hole.

Assignees

• Byk Chemie Gmbh

Inventors

• Nagelsdiek René
• Bühne Sylvia
• Von Haaren Jan
• Klein Agnetha
• Sauerländer Christian

Classifications

• C09K8/28 Primary

  containing organic additives · CPC title

• C09K23/017

  Mixtures of compounds · CPC title

• C09K23/003

  Organic compounds containing only carbon and hydrogen · CPC title

• C09K2208/14

  Double emulsions, i.e. oil-in-water-in-oil emulsions or water-in-oil-in-water emulsions · CPC title

• C11D1/652

  Mixtures of anionic compounds with carboxylic amides or alkylol amides · CPC title