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US 11,124,688 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 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.
Claims29
A composition comprising:
- (A) at least one of alkoxylated primary amine compounds, alkoxylated secondary amine compounds, 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 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 8 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,
- wherein the amine compounds have the following general formula
- R1—N(—XnH)(—XmH) or (R1—)(R4—)N(—XnH) in which
- R1, R4 each stand for a hydrocarbon radical with 4 to 24 hydrocarbon atoms,
- X stands for CH2—CHR2—O— or —CHR2—CH2—O—, and may or may not be different for each m and n,
- R2 stands for H, a methyl group or an ethyl group and may or may not be different for each m and n,
- n and m independently of one another stand for average numerical values greater than 0, and independently thereof the sum of n plus m is 0.5 and above,
- and wherein for R1—N(—XnH)(—XmH) n+m+p is between 2 and 8, and for (R1—) (R4—)N(—XnH) n+p is between 2 and 8.
18 more elements
A method of forming a water-in-oil emulsion comprising:
- introducing a composition comprising:
- (A) at least one of alkoxylated primary amine compounds, alkoxylated secondary amine compounds, or a mixture thereof and
- (B) at least one of carboxylic acid compounds selected from at least one of polyalkylene glycol ether carboxylic acids of a monoalcohol, polyalkylene glycol ether carboxylic acids of a polyol, or mixtures thereof into a mixture of (F) water and (C) oil to form said water-in-oil emulsion, wherein the oil (C) is liquid at least at 25° C., and wherein the emulsion further comprises salts dissolved in the water (F) in a concentration of greater than 1% by wt. and 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 8 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,
- wherein the amine compounds have the following general formula
- R1—N(—XnH)(—XmH) or (R1—)(R4—)N(—XnH) in which
- R1, R4 each stand for a hydrocarbon radical with 4 to 24 hydrocarbon atoms,
- X stands for CH2—CHR2—O— or —CHR2—CH2—O—, and may or may not be different for each m and n
- R2 stands for H, a methyl group or an ethyl group and may or may not be different for each m and n,
- n and m independently of one another stand for average numerical values greater than 0, and independently thereof the sum of n plus m is 0.5 and above,
- and wherein for R1—N(—XnH)(—XmH) n+m+p is between 2 and 8, and for (R1—)(R4—)N(—XnH) n+p is between 2 and 8.
16 more elements
Dependencies are inferred from the claim text.