The Unplugging Technique of Electrical Heating Treatment by Frequency Current

By fitting With unplugging facilities of electrical heating treatment in oilfield collection pipelines and long distance transportation pipelines, it has become the necessary technique for the transportation and collection technology of viscous oil and condensed oil. The paper explains the principle and the method of unplugging technique of electrical heating treatment by frequency current and the calculation of data concerned as well. It also has given the practical examples in the liahe Oilfield.