New possibilities of electromagnetic logging in anisotropic and heterogeneous rock medium

• Autorzy: Gawin A. , Gawin H.
• Języki publikacji: EN

Abstrakty

EN

This paper, being a continuation of the earlier works by the author, presents new possibilities of electromagnetic logging in anisotropic and heterogeneous rocks. The theoretical background for (among other things) the azimuth-radial electromagnetic logging with wave and geometrical shaping - of the field is described. It is assumed that the medium at the outside of boreholes - the zone contaminated by mud filtrate and uninvated zone - is heterogeneous and anisotropic. In general, we treat the specific conductivity tensor s, the electric permittivity tensor e, and the magnetic permeability tensor m, as functions C1 of the point. An influence of anisotropy of electric properties is much simpler. In the case of monochromatic fields, a uniform wave tensor can be employed. An assumption that also magnetic permeability is a tensor helps us to introduce a uniform tensor according to the classical theory. These difficulties are avoided, at last in the formal operation with equations, if the approach to the problem is relativistic.

Słowa kluczowe

EN

models and geometrical structures; electromagnetic logging; propagation; measurement tools

• Wydawca: Instytut Geofizyki PAN
• Czasopismo: Acta Geophysica Polonica
• Rocznik: 2000
• Tom: Vol. 48, nr 4
• Strony: 489--521
• Opis fizyczny: Bibliogr. 42 poz.

Twórcy

autor

Gawin A.

autor

Gawin H.

• Institute of Geophysics, University of Mining and Metallurgy, Kraków, Poland,