Low-Frequency Experimental Investigation of Frequency and Temperature Dependences of the Electrical Conductivity of Asphalt-Resin-Paraffin Deposits in Reservoirs

Resumo

We performed experimental studies of the phase-frequency and the amplitude-frequency characteristics of the electrical conductivity of asphalt-resin-paraffin deposits in oil storage reservoirs within the frequency range of 4 Hz–1 kHz and the temperature range of 20–70°C. We found two domains in the obtained temperature dependences. For the temperature range below the phase-transition temperature, the activation energy was equal, on average, to 0.52 eV, while above this it was approximately 1.00 eV. The peculiarity of the frequency dependences of the phase-frequency characteristics results from the multi-factor mechanisms of the polarization, which resulted in “smearing” of their extremes over these frequencies.