Aluminum anode casing was installed underground in Chunbai oilfield

Pure white corrosion potential or natural potential corrosion potential (NATURAL potential) : every metal immersed in a certain medium has a certain potential, called the metal corrosion potential (natural potential). Corrosion potential can indicate the relative ease with which a metal loses electrons. The more negative the corrosion potential is, the more likely it is to lose electrons.

Pubai oilfield underground installation casing aluminum anode pure white

The corrosion of white oil well casing is mainly external corrosion, and cathodic protection is recognized as an effective technology to control external corrosion. Therefore, the cathodic protection technology to prevent and mitigate casing corrosion has been gradually adopted and promoted, and reasonable cathodic protection design will effectively extend the service life of casing in oil Wells.

With the extension of oilfield development time, the corrosion of well casing also needs to be minimized, which directly affects the further exploitation of oilfield. A large number of data show that the corrosion of oil well casing is mainly external corrosion, and cathodic protection is recognized as an effective technology to control external corrosion.