Abstract
A boundary element model was constructed for cathodic protection of oil well casings in a domain with layered soil conductivities. The model can handle vertical or deviated wells. Since the potential distribution within the casing metal greatly affects the current distribution, potential variation of the metal in the axial direction was included in the model. Nonlinear dependence of current density on the potential difference between the metal and adjacent soil was also considered.
This model was used to investigate the effects of soil conductivities, well casing geometry, and the location of a current source on the current and potential distribution at the well casing. The model was also compared to an existing electrical circuit analog model.
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© 1992 Computational Mechanics Publications
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Lee, S.H., Townley, D.W., Eshun, K.O. (1992). Cathodic Protection of a Well Casing in a Layered Formation. In: Brebbia, C.A., Ingber, M.S. (eds) Boundary Element Technology VII. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2872-8_29
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DOI: https://doi.org/10.1007/978-94-011-2872-8_29
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-782-6
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