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A cathodic protection finite-element modeling for well-casing by simulative experiment, boundary conditions discussion and analysis. An important reference for the optimal design of cathodic protection for well-casing through seawater, sea mud and rock.
The over-long well casing through the seawater, sea mud and rock, which is in severe corrosion environment and cathodic protection is valid protection method. The numerical model of cathodic protection for the complex condition, which is in the uneven environment, is more important and difficult for optimal design. The paper built a cathodic protection finite-element modeling for well-casing by simulative experiment, boundary conditions discussion and analysis,in order to provide an important reference for the optimal design of cathodic protection for well-casing through seawater, sea mud and rock.
Key words: FEM, well casing, cathodic protection, seawater, sea mud and rock
Case histories where throttling down the cathodic protection was evaluated to determine the impact on reducing the AC corrosion threat. Includes the use of fast-response electrical resistance corrosion rate probe monitoring technology.
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Here we would like to elaborate on corrosion risk associated with coatings that shield cathodic protection.
Experiments and corrosion modeling were conducted - with 10, 50, and 100 cm2 coupons in circular, triangular, and cylindrical shapes - to develop an approach to evaluate optimal cathodic protection (CP) coupon size and shape for monitoring CP in field.