Cathodic protection for deep well
Cathodic protection for deep well
(OP)
I am designing a deep injection well and would like to provide cathodic protection to protect against casing corrosion. The well will have casing to 2,750 feet. I will be using seamless, half-inch wall, mild steel casing. Any real challenges to protecting the entire casing string? More information just in case it is needed: fluid velocity abut 5 feet per second, fluid is treated effluent from the wastewater treatment plant, chlorides are around 1,200 mg/L, temperature is around 80 degrees.





RE: Cathodic protection for deep well
RE: Cathodic protection for deep well
We have 3 (1700'-1999') and you would believe how many hours in design and permitting went into each. Ours are all SS, both the casing and process pipe, and a chromate solution in annulus.