Patent ID: 8163099

Claim:
An apparatus for reducing deposits in a petroleum flow line, the apparatus comprising: an exciter and an electric wave generator; the exciter comprising: a first field winding adapted to be disposed around the petroleum flow line, wherein in response to a first applied electric wave, the first field winding produces a first magnetic field having a first magnetic axis; and a second field winding adapted to be disposed around the petroleum flow line, wherein in response to a second applied electric wave, the second field winding produces a second magnetic field having a second magnetic axis, the second magnetic axis noncollinear with respect to the first magnetic axis; and the electric wave generator adapted to produce the first electric wave applied to the first field winding and the second electric wave applied to the second field winding, the first electric wave comprising at least one first frequency component, the second electric wave comprising at least one second frequency component, wherein in combination, the at least one first frequency component and the at least one second frequency component provide at least: a high frequency component comprising a high frequency, a low frequency component comprising a low frequency that is lower than the high frequency, and an ultralow frequency component comprising an ultralow frequency that is lower than the low frequency.