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Several well casings were selected as candidates for down hole inspection logs to determine if cathodic protection could be a solution to the external corrosion problem. "Test" cathodic protection systems were installed. Based on logging results and economic evaluation, implementation of a cathodic protection pilot project commenced.
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Design issues with well casing Cathodic Protection - CP. Need for and benefits of CP discussed. Case history dealing with design issues and what solutions were available and utilized.
Lab and field corrosion testing was completed on materials commonly used downhole in Steam Assisted Gravity Drainage (SAGD) to evaluate general corrosion rates, how they vary with well depth - as well as operating environment - to determine a dominating mechanism.
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.
Corrosion problems in casing vapor recovery system in a steam recovery processes to optimize corrosion management, considering maintenance, mitigation, inspections, material selection and cost-effective solutions.