# US 11,649,394 B2 · Ionic liquid-based products for IOR applications

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- Number: US 11,649,394 B2
- Document ID: US11649394B2
- Status: Granted
- Kind: B2
- Application number: 17/527,635
- Filed: 2021-11-16
- Published: 2022-05-19
- Granted: 2023-05-16
- Earliest claimed: 2020-11-19
- Assignees: Alchemy Sciences, Inc.
- Applicants: Alchemy Sciences, Inc.
- Inventors: Erick Acosta; Luchao Jin
- Web page: https://patentgrep.com/patent/US11649394B2

## CPC

- C09K 8/58: Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K 8/68: containing organic compounds
- C09K 8/74: combined with additives added for specific purposes
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A method includes forming an ionic liquid-based product, the ionic liquid-based product including an ionic liquid and mixing the ionic-liquid based product with a fluid. The method also includes injecting the fluid mixed with the ionic-liquid based product into a formation as part of an Improved Oil Recovery (IOR) application.

## Claims

### Claim 1

A method comprising:
forming an ionic liquid-based product, the ionic liquid-based product including an ionic liquid;
mixing the ionic-liquid based product with a fluid, the ionic liquid being
wherein at least one of R1 and R2 is selected from substituted or unsubstituted aryls and alkylenearyl hydroxalkyls; X is an anion; and m and n are chosen to provide electronic neutrality; and
injecting the fluid mixed with the ionic-liquid based product into a formation as part of an Improved Oil Recovery (IOR) application.

### Claim 2 (depends on 1)

The method of claim 1, wherein X is methylsulfate, PF, BF, or a halide.

### Claim 3 (depends on 1)

The method of claim 1, wherein the IOR is a hydraulic fracturing operation and the fluid is a fracturing fluid.

### Claim 4 (depends on 1)

The method of claim 1, wherein the IOR is an acidizing operation and the fluid is an acid.

### Claim 5 (depends on 1)

The method of claim 1, wherein the IOR is a secondary recovery and the fluid is injected water.

### Claim 6 (depends on 1)

The method of claim 1, wherein the IOR is a tertiary recovery and the fluid is injected water.