Patent AU-2022201199-A1 (AU)
Title: Lysine: hydrochloride synthetic acid compositions as alternatives to conventional acids in the oil and gas industry
Inventor: PURDY CLAY
IPC: C23G1/02
Filed: 2022-02-22
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) 
(19) World Intellectual Property 
(1) OrganizationIIIIIIIIIIIDIIDIIDIIDIIIIIIIDIII 
International Bureau (10) International Publication Number 
(43) International Publication Date W O 2018/018129 Al 
01 February 2018 (01.02.2018) W IP0I PCT 
(51) International Patent Classification: (CA). WEISSENBERGER, Markus; 66 Copperleaf Cres
C09K 8/72 (2006.01) C09K 8/52 (2006.01) cent SE, Calgary, AB T2Z 0B9 (CA).  
C09K3/00(2006.01) C23G1/02(2006.01) (74) Agent: PIGEON, Charles, 0; Bumet, Duckworth & 
(21) International Application Number: Palmer LLP, 2400,525 - 8th Avenue SW, Calgary, Alberta 
PCT/CA2017/000181 T2P iGi (CA).  
(22) International Filing Date: (81) Designated States (unless otherwise indicated, for every 
28 July 2017 (28.07.2017) kind of national protection available): AE, AG, AL, AM, 
(25) Filing Language: English AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 
CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 
(26) Publication Language: English DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, HN, 
(30) PriorityData: HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 
(30) 7,490 P r Data 2016(29.07.2016KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 
2,937,490 29July2016(29.07.2016) CA MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, 
(71) Applicant: FLUID ENERGY GROUP LTD. [CA/CA]; OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 
#104, 215 1 th Avenue SE, Calgary, AB T2G 0X8 (CA). SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 
(72) Inventors: PURDY, Clay; #20 Chinook Place SW, Medi- TR, TT, TZ, UA, UG, US, UZ, VC, VN, 
ZA, ZM, ZW.  
cine Hat, Alberta TlA 8S1 (CA). JAMIESON, Alexander, (84) Designated States (unless otherwise indicated, for every 
David; 320, 707 - 4th Street NE, Calgary, Alberta T2E 3S7 kind of regional protection available): ARIPO (BW, GH, 
GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 
UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 
(54) Title: LYSINE: HYDROCHLORIDE SYNTHETIC ACID COMPOSITIONS AS ALTERNATIVES TO CONVENTIONAL 
ACIDS IN THE OIL AND GAS INDUSTRY 
28% HCI versus Lysine-HCL 100% (1:9 and 1:12.5 ratio) 
Weight Loss Du To 19 ratio (50%) 
28% HC1 
1:12.Smtio(5O%) 
.. ...... ... f -- t.....  ...... ...... t.......  
Elapsed Time /Minutes 
Figure 1 
(57) Abstract: An aqueous synthetic acid composition for use in oil industry activities, said composition comprising: lysine and hy
0C drogen chloride in a molar ratio ranging from 1 :3 to 1 : 12.5, preferably from more than 1 :5 to 1 :8.5; it can also further comprise a 
metal iodide or iodate; an alcohol or derivative thereof. Said composition demonstrates advantageous properties over known synthetic 
acids at temperatures above 90'C. Said composition is useful in various oil and gas industry operations. Preferred embodiments of said 
composition providing substantial advantages in matrix acidizing by increasing the effectiveness of wormholing compared to conven
Otional mineral acids such as HC1.
W O 2018/018129 A29Al||||||||||||||||||||||||||||||||||||||||||||||||||||||| 
TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 
EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 
MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 
TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 
KM, ML, MR, NE, SN, TD, TG).  
Published: 
- with international search report (Art. 21(3))