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US 9,909,049 B2Granted
Composition comprising an alkoxylated amine compound and a carboxylic acid compound, use thereof in water in oil emulsions and process using the composition as or as part of a drilling fluid
AssigneeSasol Performance Chemicals GmbH
InventorsHeinz Napierala, Ludger Bosing
Life of this patent
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Abstract
The object of the present invention is a composition comprising amine compound and carboxylic acid compounds, wherein at least the amine compounds are alkoxylated, use thereof as a drilling fluid, and a method for using the drilling fluid.
Claims39
A composition comprising:
- (A) at least one of alkoxylated amine compound, or a mixture thereof and
- (B) at least one of carboxylic acid compounds selected from at least one of polyalkene glycol ether carboxylic acids of a monoalcohol, poly-alkylene glycol ether carboxylic acids of a polyol, or mixtures thereof
- (C) an oil that is liquid at least at 25° C., and
- (F) water,
- wherein the amine compound is an alkoxylated imidazole, alkoxylated piperazine, or mixtures thereof,
- wherein the composition further comprises salts dissolved in the water (F) in a concentration of greater than 1% by wt. and the composition is a water-in-oil-emulsion wherein the oil (C) forms the continuous phase and the water
- (F) forms the dispersed phase,
- wherein the polyalkylene glycol ether carboxylic acids of a monoalcohol and/or a polyol have the general formula
- R3—[—O—(Z)p—E]y
- wherein R3 stands for a hydrocarbon radical with 1 to 24 hydrocarbon atoms,
- Z stands for alkoxylate groups —CH2—CHR2—O— or CHR2—CH2—O— which may or may not be different for each p,
- R2 stands for H, a methyl group or an ethyl group, which may or may not be different for each p,
- E stands for —CH2-COOH,
- p stands for average numerical values from greater than 0 to 15 and y is 1 in the case of a monoalcohol, and 2, 3, 4, 5 or 6 in the case of a polyol.
11 more elements
A method for drilling an earth borehole, comprising the steps of
- introducing a drilling fluid into the earth borehole during the drilling operation, said drilling fluid comprising
- (A) at least one of alkoxylated primary amine, alkoxylated secondary amine, alkoxylated tertiary amine compounds or mixtures thereof,
- (B) at least one of carboxylic acid compounds selected from poly-alkylene glycol ether carboxylic acids of a monoalcohol, poly-alkylene glycol ether carboxylic acids of a polyol, or mixtures thereof,
- (C) an oil that is liquid at least at 25° C., and
- (F) water,
- wherein the polyalkylene glycol ether carboxylic acids of a monoalcohol and/or a polyol have the general formula
- R3—[—O—(Z)p—E]y
- wherein
- R3 stands for a hydrocarbon radical with 1 to 24 hydrocarbon atoms,
- Z stands for alkoxylate groups —CH2—CHR2—O— or CHR2—CH2—O— which may or may not be different for each p,
- R2 stands for H, a methyl group or an ethyl group, which may or may not be different for each p,
- E stands for —CH2—COOH,
- p stands for average numerical values from greater than 0 to 15 and
- y is 1 in the case of a monoalcohol, and 2, 3, 4, 5 or 6 in the case of a polyol
- extracting the drilling fluid being a water-in-oil emulsion including drilled material,
- bringing at least a portion of the drilling fluid comprising a water-in-oil emulsion into contact with a base to break the water-in-oil emulsion by setting a pH value of higher than 11, to obtain an inverted emulsion being an oil-in-water emulsion.
13 more elements
A method of improving flow of heavy hydrocarbons comprising
- introducing a composition comprising:
- (A) one or more amine compounds and
- (B) one or more carboxylic acid compounds selected from one or more members of the group of polyalkylene glycol ether carboxylic acids of a monoalcohol and polyalkylene glycol ether carboxylic acids of a polyol,
- (F) water,
- wherein the amine compound is an alkoxylated imidazole, alkoxylated piperazine, or mixtures thereof,
- wherein the composition further comprises salts dissolved in the water (F) in a concentration of greater than 1% by wt. and the composition is a water-in-oil emulsion wherein the oil (C) forms the continuous phase and the water (F) forms the dispersed phase,
- into heavy crude oils or extra heavy crude oils to form water-in-oil emulsions with reduced viscosity,
- wherein the polyalkylene glycol ether carboxylic acids of a monoalcohol and/or a polyol have the general formula
- R3—[—O—(Z)p—E]y
- wherein R3 stands for a hydrocarbon radical with 1 to 24 hydrocarbon atoms,
- Z stands for alkoxylate groups —CH2-CHR2—O— or CHR2—CH2—O— which may or may not be different for each p,
- R2 stands for H, a methyl group or an ethyl group, which may or may not be different for each p,
- E stands for —CH2-COOH,
- p stands for average numerical values from greater than 0 to 15 and
- y is 1 in the case of a monoalcohol, and 2, 3, 4, 5 or 6 in the case of a polyol.
12 more elements
A method of forming a water-in-oil emulsion comprising:
- introducing a composition comprising:
- (A) one or more amine compounds and
- (B) one or more carboxylic acid compounds selected from one or more members of the group of polyalkylene glycol ether carboxylic acids of a monoalcohol and polyalkylene glycol ether carboxylic acids of a polyol, into a mixture of water and oil,
- wherein the amine compound is an alkoxylated imidazole, alkoxylated piperazine, or mixtures thereof,
- wherein the polyalkylene glycol ether carboxylic acids of a monoalcohol and/or a polyol have the general formula
- R3—[—O—(Z)p—E]y
- wherein R3 stands for a hydrocarbon radical with 1 to 24 hydrocarbon atoms,
- Z stands for alkoxylate groups —CH2-CHR2—O— or CHR2—CH2—O— which may or may not be different for each p,
- R2 stands for H, a methyl group or an ethyl group, which may or may not be different for each p,
- E stands for —CH2-COOH,
- p stands for average numerical values from greater than 0 to 15 and y is 1 in the case of a monoalcohol, and 2, 3, 4, 5 or 6 in the case of a polyol.
8 more elements
A composition comprising:
- (A) at least one alkoxylated amine compounds, or a mixture thereof and
- (B) at least one of carboxylic acid compound selected from at least one of polyalkene glycol ether carboxylic acids of a monoalcohol, poly-alkylene glycol ether carboxylic acids of a polyol, or mixtures thereof
- (C) an oil that is liquid at least at 25° C., and
- (F) water,
- wherein the composition further comprises salts dissolved in the water (F) in a concentration of greater than 1% by wt. and the composition is a water-in-oil-emulsion wherein the oil (C) forms the continuous phase and the water (F) forms the dispersed phase
- wherein the alkoxylated amine compound is an alkoxylated imidazole, alkoxylated piperazine, or mixtures thereof.
3 more elements
Dependencies are inferred from the claim text.