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Nanosecond electromagnetic sounding of a fluid-saturated layered formation |
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| Authors: | M.I. Epov V.L. Mironov S.A. Komarov K.V. Muzalevsky |
| Affiliation: | aInstitute of Petroleum Geology and Geophysics, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia bInstitute of Physics, Siberian Branch of the RAS, 50, str. 38, Akademgorodok, Krasnoyarsk, 660036, Russia cAltai State University, 61 ul. Lenina, Barnaul, 656049, Russia |
| Abstract: | Mathematical modeling was applied to study attenuation of a nanosecond pulse that propagated in an oil-bearing formation and was reflected from the oil-gas or oil-water interfaces. The problem was formulated and solved for propagation of a short electromagnetic Gaussian pulse in a layered hydrocarbon reservoir in the case of excitation by a long electric line. Complex permittivity of oil-bearing rocks was calculated using a refractive mixing dielectric model for oil, saline water, methane, quartz, and bentonite in each layer. We obtained and analyzed space-time diagrams of wave propagation and reflection and estimated effective attenuation for both cases. |
| Keywords: | Horizontal well fluid-saturated formation complex permittivity dispersive media refractive dielectric model broadband pulse Green's function simulation |
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