Patent ID: 7892360
Filing Date: 2011-02-22
Classification: B08B

Abstract:
1. A method of reducing deposits in a petroleum pipe, the method comprising: generating an electric wave comprising a high frequency component, a low frequency component, and an ultralow frequency component, the high frequency component comprising a high frequency in a range from approximately 25 kHz to approximately 65 kHz, the low frequency component comprising a low frequency in a range from approximately 25 Hz to approximately 240 Hz, and the ultralow frequency component comprising an ultralow frequency in a range from approximately 0.1 Hz to approximately 10 Hz; applying the electric wave to a plurality of field windings circumferentially disposed around a petroleum pipe while a petroleum fluid is flowing in the petroleum pipe, the plurality of field windings comprising at least a first field winding and a second field winding; generating with the first field winding, in response to the electric wave, a first magnetic field having a first magnetic axis; and generating with the second field winding, in response to the electric wave, a second magnetic field having a second magnetic axis, the second magnetic axis noncollinear with respect to the first magnetic axis.