IP Library › Granted Patent US 10,822,535
Granted Patent B2
US 10,822,535 · App. 15/992,951 · Granted Nov 3, 2020

Modified acid compositions as alternatives to conventional acids in the oil and gas industry

Inventors: Clay Purdy (Medicine Hat, CA); Markus Weissenberger (Calgary, CA)
Assignee: FLUID ENERGY GROUP LTD
C09K8/52A23C21/00A23J1/00A23J1/202B01D15/203B01J49/50B01J49/60B08B3/08B09C1/08C02F1/50C02F1/66C04B41/009C04B41/5315C04B41/5353C04B41/72C05B11/04C05B15/00C05B17/00C05C11/00C05D9/00C05G3/80C05G5/23C09K8/54C09K8/72C09K13/06C09K17/40C09K17/42C09K17/48C11D3/30C11D7/08C11D7/3218C23F11/04C23F11/142E21B37/06C02F5/125C09K2208/32
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Quick Facts
Patent No.
US 10,822,535
App. No.
15/992,951
Granted
Nov 3, 2020
Kind
B2
Abstract

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

Claims (5)

1. An aqueous modified acid composition comprising:

Hydrochloric acid and monoethanolamine in a molar ratio ranging from 3:1 to not more than 15:1 where the pH of the composition is less than 1 and the composition is stable at temperatures of up to 190° C.

2. The aqueous modified acid composition according to claim 1 , where the hydrochloric acid and monoethanolamine are present in a molar ratio ranging from 3:1 to not more than 10:1.

3. The aqueous modified acid composition according to claim 1 , where the hydrochloric acid and monoethanolamine in a molar ratio ranging from 3:1 to not more than 7:1.

4. The aqueous modified acid composition according to claim 1 , where the hydrochloric acid and monoethanolamine in a molar ratio ranging from 3:1 to not more than 4.1:1.

Assignments (4)
SECURITY INTEREST Recorded Dec 12, 2023
From: DORF KETAL CHEMICALS FZE
To: HSBC BANK MIDDLE EAST LIMITED
Reel/Frame 065878/0104 →
CORRECTIVE ASSIGNMENT TO CORRECT THE PRIOR ERRONEOUS RECORDATION OF ASSIGNMENT APPLICATION NUMBERS: 15614284, 17148881 PREVIOUSLY RECORDED ON REEL 063118 FRAME 0689. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded May 17, 2023
From: FLUID ENERGY GROUP LTD.
To: DORF KETAL CHEMICALS FZE
Reel/Frame 063695/0522 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 20, 2023
From: FLUID ENERGY GROUP LTD.
To: DORF KETAL CHEMICALS FZE
Reel/Frame 063118/0689 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 21, 2020
From: PURDY, CLAY; WEISSENBERGER, MARKUS
To: FLUID ENERGY GROUP LTD
Reel/Frame 052721/0797 →
Priority Claims (1)
CA 2969174 · Jun 2, 2017 · national
Continuity (1)
Related Publication 20190040298A1 · Feb 7, 2019
Cited By (7)
US 12,270,288 US 12,473,800 US 12,497,554 US 12,553,316 US 12,577,450 US 12,692,428 US 12,716,022