Corrosion inhibition package

Patent metadata

Field	Value
Publication number	US-11542608-B2
Application number	US-201816481332-A
Country	US
Kind code	B2
Filing date	Feb 2, 2018
Priority date	Feb 3, 2017
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A corrosion inhibition package for use with an aqueous acid composition, said package comprising: a terpene; a cinnamaldehyde or a derivative thereof; at least one amphoteric surfactant; and a solvent. Also disclosed are compositions comprising said corrosion inhibitor package. Preferably, the corrosion inhibition package meets the environmental requirements for classification as yellow according to the Norwegian North Sea offshore drilling regulatory requirements.

First claim

The invention claimed is:

1. A corrosion inhibition package for use with an aqueous acid composition, said corrosion inhibition package comprising
a corrosion inhibitor component, which said corrosion inhibitor component comprises
a terpene;
a cinnamaldehyde or a derivative thereof;
at least one amphoteric surfactant, wherein the at least one amphoteric surfactant is selected from the group consisting of an amido betaine surfactant, an amido sultaine surfactant, and combinations thereof;
an anionic surfactant which is a dicarboxylic surfactant; and
a solvent, and

wherein the terpene is selected from the group consisting of citral, carvone, ionone, ocimene, cymene, and combinations thereof,
the terpene is present in an amount ranging from 5% to 30% by volume of the total volume of the corrosion inhibition package,
the cinnamaldehyde or derivative thereof is present in an amount ranging from 5% to 30% by volume of the total volume of the corrosion inhibition package, and
the at least one amphoteric surfactant is present in an amount ranging from 2% to 20% by volume of the total volume of the corrosion inhibition package.

2. The corrosion inhibition package as claimed in claim 1 , wherein the corrosion inhibition package is a non-emulsion corrosion inhibitor package and the corrosion inhibitor component is a water-soluble corrosion inhibitor component.

3. The corrosion inhibition package as claimed in claim 1 ,
wherein the terpene is selected from the group consisting of citral and ocimene, the amphoteric surfactant is an amido betaine with a hydrophobic tail ranging from C8 to C16; and the dicarboxylic surfactant is a dicarboxylic surfactant with a hydrophobic tail ranging from C8 to C16.

4. The corrosion inhibition package as claimed in claim 1 , wherein the solvent is present in an amount ranging from 25% to 80% by volume of the total volume of the corrosion inhibition package.

5. The corrosion inhibition package as claimed in claim 1 , wherein the amphoteric surfactant is an amido betaine with a hydrophobic tail ranging from C8 to C16.

6. The corrosion inhibition package as claimed in claim 5 , wherein the amphoteric surfactant is cocamidopropyl betaine.

7. The corrosion inhibition package as claimed in claim 1 , wherein the dicarboxylic surfactant is a dicarboxylic surfactant with a hydrophobic tail ranging from C8 to C16.

8. The corrosion inhibition package as claimed in claim 7 , wherein the dicarboxylic surfactant is sodium lauriminodipropionate.

9. The corrosion inhibition package as claimed in claim 1 , wherein the solvent is selected from the group consisting of: isopropanol; methanol; ethanol; 2-butoxyethanol; diethylene glycol; a short chain ethoxylate; and combinations thereof.

10. The corrosion inhibition package as claimed in claim 1 , further comprising a corrosion inhibitor intensifier, wherein the corrosion inhibitor intensifier is selected from the group consisting of metal iodide or iodate, aluminum chloride, calcium chloride, bismuth chloride and magnesium chloride, and combinations thereof.

11. The corrosion inhibition package as claimed in claim 10 , wherein the corrosion inhibitor intensifier is a metal iodide or iodate selected from the group consisting of potassium iodide, sodium iodide, cuprous iodide and lithium iodide and combinations thereof.

12. A corrosion inhibition package for use with an aqueous acid composition, said corrosion inhibition package comprising
a corrosion inhibitor component, wherein said corrosion inhibitor component consists of
a terpene selected from the group consisting of citral, ocimene, and combinations thereof;
a cinnamaldehyde or a derivative thereof;
at least one amphoteric surfactant which is an amido betaine surfactant;
an anionic surfactant which is a dicarboxylic surfactant; and
a solvent;
wherein the corrosion inhibitor component is water soluble and the volume % of the corrosion package in the aqueous acid composition ranges from 0.1 to 10%.

13. An aqueous synthetic or modified acid composition comprising
the corrosion inhibition package of claim 1 ,
and an acidic solution selected from the group consisting of: HCl; Lysine-HCl; Urea-HCl; hydrofluoric acid; sulfuric acid; methanesulfonic acid; methanesulfonic acid-Urea; phosphoric acid; phosphoric acid-urea; p-toluene sulfonic acid; and monoethylamine-HCl,
wherein the volume % of the corrosion package in the acidic composition ranges from 0.1 to 10%.

14. The aqueous synthetic or modified acid composition according to claim 13 , further comprising a corrosion intensifier,
wherein the corrosion intensifier is present in a weight/volume percentage ranging from 0.1 to 1.5% of the total volume of the aqueous acidic composition.

15. The aqueous synthetic or modified acid composition according to claim 14 , wherein the corrosion inhibitor intensifier is potassium iodide in an amount ranging from 0.25 to 1.25% vol./vol. of the acidic composition.

16. The aqueous synthetic or modified acid composition according to claim 15 , with an acid corrosion number less than 0.02 lb/ft 2 .

17. A method of using a corrosion inhibitor package with an acidic composition in the oil industry, said method comprising the step of providing the corrosion inhibitor package according claim 1 with the acidic composition, wherein the acidic composition comprises an acid selected from the group consisting of: a mineral acid, an organic acid, a modified acid, a complexed acid and a synthetic acid.

18. A method of using an aqueous acidic composition in the oil industry, said method comprising the steps of:
preparing the corrosion inhibition package according to claim 1 ;
providing an aqueous acid solution;
mixing the package into the aqueous acidic solution;
applying the resulting composition to a metal surface;
allowing the acid composition a sufficient period of time to act upon said surface; and
optionally, removing the acid composition when the exposure time has been determined to be sufficient for the operation to be complete or sufficiently complete.

19. The method according to claim 17 to perform an activity in the oil industry where the activity is selected from the group consisting of: stimulating formations; assisting in reducing breakdown pressures during downhole pumping operations; treating wellbore filter cake post drilling operations; assisting in freeing stuck pipe; descaling pipelines and/or production wells; increasing injectivity of injection wells; lowering the pH of a fluid; fracturing wells; performing matrix stimulations; conducting annular and bullhead squeezes & soaks; pickling tubing, pipe and/or coiled tubing; increasing effective permeability of formations; reducing or removing wellbore damage; cleaning perforations; solubilizing limestone, dolomite, and calcite; and scale removal from a surface selected from the group consisting of: equipment, wells and related equipment and facilities.

Assignees

• Fluid Energy Group Ltd

Inventors

• Purdy Clay
• Weissenberger Markus

Classifications

• C09K8/54

  Compositions for in situ inhibition of corrosion in boreholes or wells · CPC title

• C23G1/06

  organic inhibitors · CPC title

• C23F11/144

  Aminocarboxylic acids · CPC title

• C09K15/06

  containing oxygen · CPC title

• C09K2208/32

  Anticorrosion additives · CPC title