Further discussion on attenuation and dispersion of electromagnetic wave propagation in fluid‐saturated porous rocks and applications to dielectric‐constant well logging

Geophysics ◽  
1983 ◽  
Vol 48 (10) ◽  
pp. 1373-1380 ◽  
Author(s):  
H. Pascal

This paper presents a more detailed analysis of some basic problems of electromagnetic wave propagation through a porous medium saturated with fluid, associated directly with quantitative interpretation of dielectric constant logging. The advantages and disadvantages of a new approach, in which fluid‐saturated porous rock is considered as a two‐phase system, are discussed and compared with those obtained from the single‐phase model. It is shown that the two‐phase model may provide a better interpretation of dielectric constant logging.

Geophysics ◽  
1982 ◽  
Vol 47 (3) ◽  
pp. 388-394 ◽  
Author(s):  
H. Pascal ◽  
F. Pascal ◽  
D. Rankin

The properties of attenuation and dispersion of electromagnetic (EM) waves in fluid‐filled porous rocks are analyzed. A mathematical model of a two‐phase system for such rocks is developed. From this model the coupled equations which describe the propagation are formulated and an equation of dispersion is obtained in terms of frequency and the electrical properties of the medium constituents. Several numerical examples of both coupled and noncoupled models of propagation are used to illustrate the importance of these models for the interpretation of dielectric constant well logging.


Geophysics ◽  
1980 ◽  
Vol 45 (10) ◽  
pp. 1530-1532 ◽  
Author(s):  
H. Pascal ◽  
D. Rankin

In the interesting paper by Freedman and Vogiatzis, the Schlumberger EPT dielectric well logging method is discussed. The authors pay particular attention to the analysis of the formation traveltime and calculate, for several realistic sources, the corrections to the values of the plane wave model used by Schlumberger.


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