Novel organic acid compositions for use in the oil and gas industry

Patent metadata

Field	Value
Publication number	US-2016347993-A1
Application number	US-201615160434-A
Country	US
Kind code	A1
Filing date	May 20, 2016
Priority date	May 28, 2015
Publication date	Dec 1, 2016
Grant date	—

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

1 . An organic acid composition for use in oil industry activities, said composition comprising:
water; methanesulphonic acid; a metal iodide or iodate; and an alcohol or derivative thereof.

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 1 , wherein the alkynyl alcohol or derivative thereof is propargyl alcohol or a derivative thereof.

6 . The organic acid composition according to claim 1 , 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 1 , 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 1 , 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 . The use of a synthetic acid composition according to claim 1 in the oil industry to perform an activity selected from the group consisting of: stimulate formations; assist in reducing breakdown pressures during downhole pumping operations; treat wellbore filter cake post drilling operations; assist in freeing stuck pipe; descale pipelines and/or production wells; increase injectivity of injection wells; lower the pH of a fluid; remove undesirable scale on a surface selected from the group consisting of: equipment, wells and related equipment and facilities; fracture wells; complete matrix stimulations; conduct annular and bullhead squeezes and soaks; pickle tubing, pipe and/or coiled tubing; increase effective permeability of formations; reduce or remove wellbore damage; clean perforations; and solubilize limestone, dolomite, calcite and combinations thereof.

13 . 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; a metal iodide or iodate present in an amount of no more than 1% by weight of the weight of the composition; and an alcohol or derivative thereof present in an amount of no more than 2% 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; a metal iodide or iodate present in an amount of no more than 1% by weight of the weight of the composition; and an alcohol or derivative thereof present in an amount of no more than 2% by weight of the weight of the composition;
wherein the use selected from the group consisting of: stimulate formations; assist in reducing breakdown pressures during downhole pumping operations; treat wellbore filter cake post drilling operations; assist in freeing stuck pipe; descale pipelines and/or production wells; increase injectivity of injection wells; lower the pH of a fluid; remove undesirable scale on a surface selected from the group consisting of: equipment, wells and related equipment and facilities; fracture wells; complete matrix stimulations; conduct annular and bullhead squeezes and soaks; pickle tubing, pipe and/or coiled tubing; increase effective permeability of formations; reduce or remove wellbore damage; clean perforations; and solubilize limestone, dolomite, calcite and combinations thereof.

Assignees

• Fluid Energy Group Ltd

Inventors

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

Classifications

• E21B43/25

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

• C09K8/528

  inorganic depositions, e.g. sulfates or carbonates · CPC title

• C23F11/04

  in markedly acid liquids · CPC title

• C09K2208/32

  Anticorrosion additives · CPC title

• E21B33/14

  for cementing casings into boreholes · CPC title