With the rapid development of the petroleum industry, buried pipelines, oil casings and storage tank bottoms, especially oil casings, are seriously corroded, which has had a serious impact on the production, development and environment of oil fields. Corrosion exists on both the inner and outer walls of oil casings in oil and gas wells, with the internal corrosion being relatively more serious. So, how can the cathode and anode of oil casings be protected to reduce the corrosion of oil casings? Next, let's take a brief look:

Regarding the corrosion on the outer walls of oil well casings, the cathodic protection technology is commonly adopted, which has been recognized by the anti-corrosion industries at home and abroad. Cathodic protection is an economical, reasonable and effective protection measure to prevent underground steel structures from being corroded by soil. Cathodic protection is a safe and precise anti-corrosion technology. It features strong protection ability, simple construction and low investment. This technology is increasingly used in parts of the petrochemical, oil and natural gas industries.