Organic acid compositions for use in the oil and gas industry

Patent metadata

Field	Value
Publication number	US-10280362-B2
Application number	US-201615160434-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	May 28, 2015
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

An organic acid composition for use in oil industry activities, said composition comprising: methane sulphonic acid; a metal iodide or iodate; and an alcohol or derivative thereof. The uses include: injection/disposal in wells; squeezes and soaks or bullheads; acid fracturing; acid washes or matrix stimulations; fracturing spearheads (breakdowns); pipeline scale treatments; cement breakdowns or perforation cleaning; pH control; and de-scaling applications.

First claim

The invention claimed is:

1. An organic acid composition for use in oil industry activities, said composition comprising:
water in an amount ranging from 30 to 80% by weight of the weight of the composition;
methanesulphonic acid in an amount ranging from 30 to 70% by weight of the weight of the composition;
a metal iodide or iodate in an amount of no more than 1% by weight of the weight of the composition; and
an alcohol or derivative thereof in an amount of no more than 2% by weight of the weight of the composition,
wherein the organic acid composition has a pH less than 1.0 and a shelf life of greater than 12 months.

2. The organic acid composition according to claim 1 , wherein the metal iodide or iodate is selected from the group consisting of: cuprous iodide; potassium iodide; sodium iodide and lithium iodide.

3. The organic acid composition according to claim 1 , wherein the metal iodide or iodate is potassium iodide.

4. The organic acid composition according to claim 1 , wherein the alcohol or derivative thereof is an alkynyl alcohol or derivative thereof.

5. The organic acid composition according to claim 4 , wherein the alkynyl alcohol or derivative thereof is propargyl alcohol or a derivative thereof.

6. The organic acid composition according to claim 4 , wherein the alkynyl alcohol or derivative thereof is present in a concentration ranging from 0.05 to 2.0% w/w.

7. The organic acid composition according to claim 4 , wherein the alkynyl alcohol or derivative thereof is present in a concentration ranging from 0.05 to 1.0% w/w.

8. The organic acid composition according to claim 4 , wherein the alkynyl alcohol or derivative thereof is present in a concentration of 0.25% w/w.

9. The organic acid composition according to claim 1 , wherein the metal iodide is present in a concentration ranging from 100 to 10000 ppm.

10. The organic acid composition according to claim 1 , wherein the metal iodide is present in a concentration ranging from 100 to 5000 ppm.

11. The organic acid composition according to claim 1 , wherein the metal iodide is present in a concentration of 1000 ppm.

12. An organic acid composition for use in oil industry activities according to claim 1 , wherein the methanesulphonic acid is present in an amount ranging from 42 to 70% by weight of the weight of the composition.

13. An organic acid composition for use in oil industry activities according to claim 1 , wherein the methanesulphonic acid is present in an amount ranging from 51 to 70% by weight of the weight of the composition.

14. An organic acid composition for use in oil industry activities, said composition comprising:
water present in an amount ranging from 30 to 80% by weight of the weight of the composition;
methanesulphonic acid present in an amount ranging from 30 to 70% by weight of the weight of the composition;
potassium iodide present in an amount of no more than 1% by weight of the weight of the composition; and propargyl alcohol present in an amount of no more than 2% by weight of the weight of the composition.

15. An organic acid composition for use in oil industry activities according to claim 14 , wherein the methanesulphonic acid is present in an amount ranging from 42 to 70% by weight of the weight of the composition.

16. An organic acid composition for use in oil industry activities according to claim 14 , wherein the methanesulphonic acid is present in an amount ranging from 51 to 70% by weight of the weight of the composition.

Assignees

• Fluid Energy Group Ltd

Inventors

• Purdy Clay
• Thatcher Darren
• Garner Jon
• Ulmer Bruce
• Jamieson Alexander David

Classifications

• C23F11/04

  in markedly acid liquids · CPC title

• E21B37/06

  using chemical means for preventing or limiting {, e.g. eliminating,} the deposition of paraffins or like substances · CPC title

• E21B43/25

  Methods for stimulating production {(by vibrating earth formations E21B43/003)} · CPC title

• C09K2208/32

  Anticorrosion additives · CPC title

• C09K8/74 Primary

  combined with additives added for specific purposes · CPC title