Multicomponent organic liquid and use thereof in treating wells and subterranean formations

• US 4,919,827 A
• Filed: 05/05/1988
• Issued: 04/24/1990
• Est. Priority Date: 05/05/1988
• Status: Expired due to Fees

• Current Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Original Assignee: Amoco Corporation (BP PLC)
• Inventors: Harms, Susan D.
• Primary Examiner(s): Terapane, John F.
• Assistant Examiner(s): Geist, Gary L.
• Application Number:
  US07/187,637
• Time in Patent Office: 719 Days
• Field of Search: 252/8.552, 252/8.553, 166/307
• US Class Current: 507/261
• CPC Class Codes: C09K 8/74 combined with additives added for specific purposes
• CPC Class Codes: Y10S 507/933 Acidizing or formation destroying

Abstract

A multicomponent liquid useful in treating wells or subterranean formations comprising ethylene glycol monobutyl ether and octyl alcohol. Also disclosed are clear aqueous acidic solutions of said liquid and the use thereof in treating wells or subterranean formations.

Claims

1. A high flash point multicomponent liquid consisting essentially of ethylene glycol monobutyl ether, hereinafter referred to as EGMBE, and octyl alcohol optionally in a mixture of C₆ -C₁₀ alcohols, the liquid being substantially free of alcohols having less than six and more than ten carbon atoms in R of the formula of ROH, in proportions effective for having a flash point of at least about 100°

F. and for forming a substantially clear single phase solution with aqueous acid comprising 5-30% by weight of acid selected from the group consisting of hydrochloric acid, formic acid, acetic acid, and hydrofluoric acid.

2. A multicomponent liquid according to claim 1 consisting essentially of EGMBE and the mixture of C₆ -C₁₀ alcohols.

3. A liquid according to claim 2 containing about 76 weight percent EGMBE, and about 9 to about 11 weight percent octyl alcohol based upon the total weight of said multicomponent liquid.

4. A liquid according to claim 3 containing about 12 to about 14 weight percent C₁₀ alcohol based upon the total weight of said multicomponent liquid.

5. A solution comprising a multicomponent liquid according to claim 1 further comprising said aqueous acid wherein said multicomponent liquid comprises EGMBE in an amount of about 76 weight percent and octyl alcohol in an amount of about 9 to about 11 weight percent, said weight percents being based upon the total weight of said multicomponent liquid, and wherein said aqueous acid accounts for no more than about 75 volume percent of said solution.

6. A solution comprising a multicomponent liquid according to claim 5 wherein said multicomponent liquid further contains about 12 to about 14 weight percent C₁₀ alcohol based upon the total weight of said multicomponent liquid.

7. A multicomponent liquid according to claim 1 consisting essentially of EGMBE and the octyl alcohol.

8. A liquid according to claim 5 containing about 88 weight percent EGMBE and about 12 weight percent octyl alcohol based on the total weight of said multicomponent liquid.

9. A solution comprising a multicomponent liquid according to claim 8 further comprising said aqueous acid wherein said aqueous acid accounts for no more than about 85 volume percent of said solution.

10. A solution according to claim 9 wherein said aqueous acid accounts for about 85 weight percent of said solution.

11. A solution according to claim 9 wherein said aqueous acid accounts for about 65 weight percent of said solution.

12. A high flash point multicomponent liquid consisting essentially of ethylene glycol monobutyl ether, hereinafter referred to as EGMBE, and octyl alcohol optionally in a mixture of C₆ -C₁₀ alcohols, and an organic liquid selected from the group consisting of benzene, toluene, xylene, and alkylated naphtha dissolved in kerosene, the liquid being substantially free of alcohols having less than six and more than ten carbon atoms in R of the formula of ROH, in proportions effective for having a flash point of at least about 100°

F. and for forming a substantially clear single phase solution with aqueous acid comprising 5-30% by weight of acid selected from the group consisting of hydrochloric acid, formic acid, acetic acid, and hydrofluoric acid.

13. A liquid according to claim 12 containing about 70 weight percent EGMBE, about 10 weight percent octyl alcohol, and about 20 weight percent xylene said weight percents being based upon the total weight of said multicomponent liquid.

14. A solution comprising a multicomponent liquid according to claim 12 wherein said multipurpose liquid comprises EGMBE in an amount of about 70 weight percent of said liquid, octyl alcohol in an amount of about 10 weight percent of said liquid, and xylene in an amount of about 20 weight percent of said liquid, and further comprising said aqueous acid wherein said aqueous acid accounts for no more than about 50 volume percent of said solution.

15. A solution according to claim 14 wherein said aqueous acid accounts for about 50 volume percent of said solution.

16. A high flash point multicomponent liquid consisting of ethylene glycol monobutyl ether, hereinafter referred to as EGMBE, and octyl alcohol in an amount in the range of about 5 to about 20 percent by weight of the multicomponent liquid, optionally in a mixture of C₆ -C₁₀ alcohols, and isopropyl alcohol up to about 10 weight percent based on the total weight of said multicomponent liquid, and an organic liquid selected from the group consisting of benzene, toluene, xylene, and alkylated naphtha dissolved in kerosene, in proportions effective for having a flash point of at least about 100°

F. and for forming a substantially clear single phase solution with aqueous acid comprising 5-30% by weight of acid selected from the group consisting of hydrochloric acid, formic acid, acetic acid, and hydrofluoric acid, said multicomponent liquid being substantially free of surfactant.

17. A liquid according to claim 16 containing about 71 weight percent EGMBE, about 14 weight percent octyl alcohol, about 5 weight percent isopropyl alcohol, and about 10 weight percent xylene, said weight percents being based on the total weight of said multicomponent liquid.

18. A multicomponent liquid according to claim 16 comprising EGMBE in an amount in the range of about 65 to about 88 percent by weight of said multicomponent liquid.

19. A liquid according to claim 18 comprising about 9 to about 16 percent by weight of octyl alcohol based on the total weight of said multicomponent liquid.

20. A liquid according to claim 19 comprising about 70 to about 88 percent by weight EGMBE and about 9 to about 16 percent by weight of octyl alcohol, said weight percent being based on the total weight of said multicomponent liquid.

21. A liquid according to claim 20 containing up to about 20 weight percent xylene based upon the total weight of said multicomponent liquid.

22. An aqueous solution according to claim 16 further comprising said aqueous acid wherein said aqueous acid consists essentially of 15 weight percent HCl based upon the weight of said aqueous acid.

23. A solution according to claim 22 wherein said multicomponent liquid contains EGMBE in an amount of about 71 weight percent of said liquid, octyl alcohol in an amount of about 14 weight percent of said liquid, isopropyl alcohol in an amount of about 5 weight percent of said liquid, and xylene in an amount of about 10 weight percent of said liquid, and wherein said aqueous acid accounts for no more than about 65 volume percent of said solution.

24. A solution according to claim 23 wherein said aqueous acid accounts for about 65 volume percent of said solution.

25. A solution according to claim 24 wherein said aqueous acid accounts for about 50 volume percent of said solution.