During oil development, casing traverses various formations and aquifers, constantly exposed to soil environment corrosion. The casing sacrificial anode utilizes cathodic protection technology by installing a negatively charged anode alloy onto the casing's outer surface. This anode is lowered into the well alongside the casing. The sacrificial anode supplies an anodic current, polarizing the casing to provide protection.

Corrosion protection for newly drilled and sidetracked casing in highly corrosive environments.

High drive voltage, large capacitance, long service life, low environmental requirements