360 



S. G. KoMARov AND Z. L Keivsar 



Table 3. The values of the errors in determining the permeability from 



THE SPECIFIC resistance FOR VARIOUS DISTANCES ALONG THE VERTICAL FROM 

 THE MIDDLE OF THE STRATUM TO THE WATER-PETROLEUM CONTACT (VNK)* 



of the surface of the sohd phase-^' ^^^^ ^^®\ The simplified formula (8), 

 which does not give this fact, will not correspond in the majority of cases 

 to the actual state of affairs. 



2. Due to the heterogeneity of the stratum, the distribution of water will 

 deviate considerably from an even course, determined by the coefficient jjl. 



As recommended by Dolina it is much better to use stratum characteris- 

 tics, and to exclude from consideration all doubtful cases. As follows from 

 Table 3, the usual method can give results free from the effect of the 

 water -petroleum contact even at a distance of less than 16 m from it. 



CURVES FOR THE DEPENDENCE OF THE COEFFICIENT OF INCREASE IN 

 RESISTANCE ON PERMEABILITY 



The Dolina curve (i on Fig. 2) can be expressed approximately by 

 the formula 



Q = lxlO-^K];^^, (9) 



where K is the permeability in millidarcies. 

 * a Russian transliteration is used [Editor's note]. 



