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K. M. Ermokhin
K. M. Ermokhin
Saint-Petersburg branch of Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation named after Nikolay Pushkov of the Russian Academy of Sciences
Russia
Saint-Petersburg branch of Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation named after Nikolay Pushkov of the Russian Academy of Sciences
Russia
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Articles

  • Date submitted
    2016-12-30
  • Date published
    2009-04-01

Analytical continuation of geophysical fields by continued fractions method

The most close to reality geophysical field description is the approximation of the fraction-rational type. In this case the presence of poles in the lower half space corresponds adequately to the denominator zeros. This article contains the theory and algorithm of realization of this conception. The proposed method is called – Continued Fraction Continuation Method. 

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K. M. Ermokhin (2009) Analytical continuation of geophysical fields by continued fractions method. Journal of Mining Institute. Vol 183. p. 238.
  • Date submitted
    2017-10-25
  • Date published
    2017-10-25

Prospects of hydrocarbon deposits exploration using the method of induced polarization during geomagnetic-variation profiling

Traditionally it is believed that the effect of induced polarization is an interfering factor for the measurement of electromagnetic fields and their interpretation during conducting works using magnetotelluric sounding and geomag-netic-variation profiling methods. A new method is proposed for isolating the effects of induced polarization during geomagnetic-variation profiling aimed at searching for hydrocarbon deposits on the basis of phase measurements during the conduct of geomagnetic-variation profiling. The phenomenon of induced polarization is proposed to be used as a special exploration mark for deep-lying hydrocarbon deposits. The traditional method of induced polarization uses artificial field sources, the powers of which are principally insufficient to reach depths of 3-5 km, which leads to the need to search for alternative - natural sources in the form of telluric and magnetotelluric fields. The proposed method makes it possible to detect and interpret the effects of induced polarization from deep-seated oil and gas reservoirs directly, without relying on indirect signs.

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K. M. Ermokhin (2017) Prospects of hydrocarbon deposits exploration using the method of induced polarization during geomagnetic-variation profiling. Journal of Mining Institute. Vol 227. p. 518. DOI: 10.25515/pmi.2017.5.518