US 11,866,640 B2
Well corrosion control
Qiwei Wang, Dhahran (SA); Hassan Ali Al-Ajwad, Dhahran (SA); and Tao Chen, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Mar. 25, 2022, as Appl. No. 17/704,809.
Prior Publication US 2023/0303910 A1, Sep. 28, 2023
Int. Cl. C09K 8/54 (2006.01)
CPC C09K 8/54 (2013.01) [C09K 2208/32 (2013.01)] 8 Claims
 
1. A method of corrosion control and scale control in water supply for injection, comprising:
specifying a corrosion inhibitor for squeeze treatment of a water supply well;
specifying a scale inhibitor that can form a complex with the corrosion inhibitor;
pumping the corrosion inhibitor and the scale inhibitor through a wellbore of the water supply well into an aquifer in a subterranean formation;
forming the complex of the corrosion inhibitor and the scale inhibitor; and
pumping water from the water supply well to an injection well for injection, the water comprising the scale inhibitor released from the complex in the aquifer and the corrosion inhibitor released from the complex in the aquifer.