Oil-based compositions for dispersing asphaltenes and paraffins

• US 10,557,077 B2
• Filed: 05/26/2015
• Issued: 02/11/2020
• Est. Priority Date: 05/26/2014
• Status: Active Grant

• Current Assignee: Itzeder Alejandro Isunza Rebolledo
• Original Assignee: Itzeder Alejandro Isunza Rebolledo
• Inventors: Isunza Rebolledo, Itzeder Alejandro
• Primary Examiner(s): Bhushan, Kumar R
• Application Number:
  US15/314,384
• Publication Number:
  US 20170198193A1
• Time in Patent Office: 1,722 Days
• CPC Class Codes: C09K 2208/10 Nanoparticle-containing well treatment fluids
• CPC Class Codes: C09K 8/52 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
• CPC Class Codes: C09K 8/524 organic depositions, e.g. paraffins or asphaltenes

Abstract

Oil-based compositions for dispersing asphaltenes and paraffins in ducts and equipment employed in the field of oil production, transporting, processing and storing are provided. The compositions are easy to formulate and they further are environmentally friendly as they are biodegradable and “green” products. The compositions comprise a non-polar solvent and bismuth nanoparticles, and can optionally further comprise a compound in the terpenes or terpenoids family and an organic acid.

Claims

1. An oil based composition, comprising from 0.01 to 1.0 wt % of bismuth nanoparticles;

from 90 to 99 wt % of a fatty acid methyl ester non-polar solvent; and

an organic acid.

2. The composition according to claim 1, further comprising a compound in the terpenes or terpenoids family.

3. The composition according to claim 1, comprising from 95 to 99 wt % of the fatty acid methyl ester.

4. The composition according to claim 2, wherein the composition comprises from 0.5 to 50 wt % of the compound in the terpenes or terpenoids family, and from 0.5 to 20 wt % of the organic acid.

5. The composition according to claim 4, wherein the composition comprises from 0.5 to 10 wt % of the compound in the terpenes or terpenoids family, and from 0.5 to 10 wt % of the organic acid.

6. The composition according to claim 5, wherein the composition comprises from 0.5 to 5 wt % of the compound in the terpenes or terpenoids family, and from 0.5 to 5 wt % of the organic acid.

7. The composition according to claim 1, wherein the fatty acid methyl ester is selected from the group consisting of corn oil methyl ester, rapeseed oil methyl ester, oleic acid methyl ester, fatty-acids medium and large size chain-triglyceride methyl esters, and mixtures thereof.

8. The composition according to claim 7, wherein the fatty acid methyl ester is corn oil methyl ester.

9. The composition according to claim 1, wherein the bismuth nanoparticles are selected from the group consisting of nanodust, nanowire, nanolines, nanotubes, and any bismuth nanostructure.

10. The composition according to claim 1, wherein the bismuth nanoparticles are selected from the group consisting of metal bismuth, bismuth oxide, bismuth sulphide, bismuth carbonate, and mixtures thereof.

11. The composition according to claim 1, wherein the bismuth nanoparticles have a particle size between 5 nm and 200 nm.

12. The composition according to claim 11, wherein the bismuth nanoparticles have a particle size between 20 nm and 100 nm.

13. The composition according to claim 1, wherein the bismuth nanoparticles are modified on their surface or functionalized with functional groups comprising saturated or unsaturated lineal, branched, cyclic C1-C20 carboxylic acids, amides, amines, triglycerides, polymers, aldehydes, ketones;

anionic, cationic, zwitterionic and non-ionic surfactants, mercapto groups, thiols, ethers, terpenes, terpenoids, essential oils, saturated or unsaturated straight, branched and cyclic sulfonated acids, salts thereof, or combinations thereof.

14. The composition according to claim 2, wherein the composition comprises the compound in the terpene or terpenoid family selected from the group consisting of monoterpenes, sesquiterpenes, diterpenes, triterpenes, tetraterpenes, polyterpenes, and mixtures thereof.

15. The composition according to claim 14, wherein the composition comprises the compound in the terpene or terpenoid family selected from the group consisting of menthol, pinene, camphor, geraniol, D-limonene, L-limonene, dipentene, myrcene, terpinene, squalene, carotene, orange terpenes, cinnamic aldehyde and long chain aldehydes, and mixtures thereof.

16. The composition according to claim 15, wherein the composition comprises the compound in the terpene or terpenoid family is selected from the group consisting of D-limonene, orange terpenes, cinnamic aldehyde, long chains aldehydes, and mixtures thereof.

17. The composition according to claim 2, wherein the organic acid is selected from the group consisting of sulfonic acids, carboxylic acids, sulfonated acids, salts thereof, and mixtures thereof.

18. The composition according to claim 17, wherein the organic acid is selected from the group consisting of dodecilbenzenesulfonic acid, C₆-C₁₈ sulfonated acids, and mixtures thereof.

19. The composition according to claim 18, wherein the organic acid is dodecilbenzenesulfonic acid.

20. The composition according to claim 1, further comprising surfactants selected from the group consisting of non-ionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, and mixtures thereof.

21. The composition according to claim 20, further wherein the non-ionic surfactants are selected from the group consisting of alkyl polyglicosides, sorbitan esters, methyl glucoside esters, ethoxylated amines, ethoxylated diamines, polyglicerol esters, polysorbates, alkyl ethoxylates, and mixtures thereof.

22. The composition according to claim 20, wherein the anionic surfactants are selected from the group consisting of alkyl ether sulfonates, docusates, alkyl benzene sulfonates, alkyl sulfonates, alkyl aryl sulfonates, straight or branched alkyl ether sulfates, straight or branched alkyl ether sulfonates, polypropoxylated alcohol sulfates, alkyl bisulfonates, alkyl bisulfates, and mixtures thereof.

23. The composition according to claim 20, wherein the cationic surfactants are selected from the group consisting of methyl arginine esters, alkanolamines, alkylenediamides, alkyl trimethyl ammonium salts, and mixtures thereof.

24. The composition according to claim 21, wherein the non-ionic surfactant is a polysorbate.

25. The composition according to claim 1, wherein the composition is formulated as an oil/water or water/oil emulsion.

26. The composition according to claim 24, wherein the non-ionic surfactant is polyoxyethylene (20) sorbitanmonooleate.