European standardized methodology for determining the protection current and displacement potential at the bottom of an oil casing are considered. Based on the experimental evidence for one of the JSC "Tatneft" casings values of the unknown parameters are calculated and obtained.
обсадная колонна, ток защиты, смещение потенциала, casing, protection current, potential displacement
1. Dolgih, S.A. Diagnostika obsadnyh kolonn s ispol'zovaniem tehnologii magnitnoy introskopii / S.A. Dolgih, A.A. Abakumov, R.A. Kaydrikov, V.V. Bazhenov // Vestnik Kazan. tehnol. un-ta. - 2011. - № 9. - S. 241-244.
2. Dolgih, S.A. Raschet raspredeleniya plotnosti toka zaschity po glubine obsadnoy kolonny neftyanoy skvazhiny / S.A. Dolgih, R.A. Kaydrikov, B.L. Zhuravlev, V.E. Tkacheva // Vestnik Kazan. tehnol. un-ta. - 2012. - № 20. - S. 191-193.
3. Instrukciya po katodnoy zaschite obsadnyh kolonn skvazhin i vykidnyh liniy (razvodyaschih vodovodov) ot naruzhnoy korrozii: RD 153-39.0-531-07: utv. OAO «Tatneft'» 19.09.07: vvod. v deystvie s 20.09.07, 83 s.
4. EN 12954, Cathodic protection of buried or immersed metallic structures. General principles and application for pipelines, 2001.
5. EN 15112, Äußerer kathodischer Korrosionsschutz von Bohrlochverrohrungen; Deutsche Fassung EN 15112:2006
