Ultrabroadband electromagnetic wave propagation in hydrocarbon reservoirs in the presence of an oil-water interface
M.I. Epov a , V.L. Mironov b , S.A. Komarov b , K.V. Muzalevskii c
a Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
b Institute of Physics, Siberian Branch of the RAS, 50/38, Akademgorodok, Krasnoyarsk, 660036, Russia
c Altai State University, 61 ul. Lenina, Barnaul, 656049, Russia
Keywords: Horizontal well; fluid-saturated formation; complex permittivity; dispersive mixtures; refractive dielectric model; broadband pulse; Green's function; simulation
Pages: 46-52
Abstract
Numerical experiments are applied to simulate propagation of broadband pulses which are transmitted by an electric dipole and travel in a uniform oil-bearing formation or in a layered reservoir with an oil-water interface. We calculate the frequency responses of the oil- and water-saturated layers as low-frequency filters for the propagating waves and find the respective cutoff frequencies. Attenuation rates are analyzed in the cases of incident nanosecond and picosecond pulses in uniform oil-bearing formations and those reflected from the oil-water interface. The low frequency filtering of pulses is investigated in terms of its effect on wave energy attenuation during propagation in oil-bearing rocks.
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