Survey results and calculation of impressed current density distribution along casing string

Authors: R.M. Gareev (Tatneft OAO, RF, Almetyevsk), S.A. Dolgikh, F.Sh. Shakirov (TatNIPIneft, RF, Bugulma), R.A. Kaidrikov, V.E. Tkacheva (Kazan National Research Technological University, RF, Kazan)

Key words: casing string, impressed current, anode zones

Method to calculate the current density distribution over the depth of casing has been offered. The paper presents a case study of Well No. 22505 operated by Oil and Gas Production Department Bavlyneft of Tatneft OAO. Anode zones on the surface of the production casing have been localized.

References

1. Dolgikh S.A., Abakumov A.A., Kaydrikov R.A., Bazhenov V.V., Vestnik Kazanskogo tekhnologicheskogo universiteta, 2011, no. 9, pp. 241-244.

2. Shakirov F.Sh., Issledovanie korrozionnogo sostoyaniya i zashchishchennosti ekspluatatsionnykh kolonn skvazhin s katodnoy zashchitoy: programma i metodika issledovaniy (Investigation of corrosion state and protection of production strings with cathodic protection: program and research methods), Al'met'evsk: Publ. of OAO “Tatneft'”, 2008.

3. Ibatullin R.R., Metodika issledovaniy korrozionnogo sostoyaniya i zashchishchennosti obsadnykh kolonn skvazhin (Research method of corrosion condition and protection of of the well casing), Al'met'evsk: Publ. of OAO “Tatneft'”, 2005.

Key words: casing string, impressed current, anode zones

Method to calculate the current density distribution over the depth of casing has been offered. The paper presents a case study of Well No. 22505 operated by Oil and Gas Production Department Bavlyneft of Tatneft OAO. Anode zones on the surface of the production casing have been localized.

References

1. Dolgikh S.A., Abakumov A.A., Kaydrikov R.A., Bazhenov V.V., Vestnik Kazanskogo tekhnologicheskogo universiteta, 2011, no. 9, pp. 241-244.

2. Shakirov F.Sh., Issledovanie korrozionnogo sostoyaniya i zashchishchennosti ekspluatatsionnykh kolonn skvazhin s katodnoy zashchitoy: programma i metodika issledovaniy (Investigation of corrosion state and protection of production strings with cathodic protection: program and research methods), Al'met'evsk: Publ. of OAO “Tatneft'”, 2008.

3. Ibatullin R.R., Metodika issledovaniy korrozionnogo sostoyaniya i zashchishchennosti obsadnykh kolonn skvazhin (Research method of corrosion condition and protection of of the well casing), Al'met'evsk: Publ. of OAO “Tatneft'”, 2005.


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