US 11,883,783 B2
System and method for electrochemical treatment of aqueous fluid for oilfield applications
Adrian Cesar Cavazos Sepulveda, San Pedro Garza Garcia (MX)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Feb. 26, 2021, as Appl. No. 17/186,761.
Prior Publication US 2022/0274065 A1, Sep. 1, 2022
Int. Cl. C02F 1/469 (2023.01); E21B 43/16 (2006.01); E21B 43/34 (2006.01); B01D 61/46 (2006.01); E21B 43/38 (2006.01); C02F 103/10 (2006.01)
CPC B01D 61/46 (2013.01) [C02F 1/4693 (2013.01); E21B 43/16 (2013.01); E21B 43/34 (2013.01); E21B 43/38 (2013.01); B01D 2313/50 (2013.01); C02F 2103/10 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of electrochemically treating a hydrocarbon-bearing formation, the method comprising:
(a) electrochemically treating an aqueous fluid to provide a first fluid having a first electrochemical potential and a second fluid having a second electrochemical potential, wherein the first electrochemical potential the second electrochemical potential have opposite signs;
(b) introducing an amount of the first fluid into the hydrocarbon bearing formation;
(c) altering an electrochemical potential of the hydrocarbon-bearing formation by contacting surfaces of the hydrocarbon-bearing formation with the first fluid;
(d) introducing an amount of a chemically inert spacer fluid into the hydrocarbon-bearing formation; and
(e) repeating steps (b)-(d) until an end point is reached.