caa a22 4500 465724949 CHVBK 20180323111726.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF02499558 doi (NATIONALLICENCE)springer-10.1007/BF02499558 Basis of borehole radiometric defectoscopy for rocks. Part II. Physical modeling [Elektronische Daten] [V. Oparin, P. Morozov, L. Potyagailo] Conclusions: We have shown that the distance between cracks can be determined from the distance between the maxima of radiometric logs. With a reduction in probe base there is an increase in the absolute maximum of the anomaly Iγmax with a simultaneous reduction in its width. The width of the maximum Iγmax of the anomaly equals the sum of the probe base and crack opening lengths. Physical and mathematical modeling demonstrates the identical qualitative dependence of recorded γ-radiation on crack parameters. However, in arranging problems of mathematical modeling it is necessary to carry out a laboratory experiment previously with the aim of eliminating unmonitored parameters. The possibility has been demonstrated of using hypotheses 1-4, which lie at the base of a theory for borehole geophysical defectoscopy, for interpreting gamma-gamma ray logging data. Plenum Publishing Corporation, 1991 Oparin V. aut Morozov P. aut Potyagailo L. aut Soviet Mining Kluwer Academic Publishers-Plenum Publishers 26/5(1990-09-01), 414-418 0038-5581 26:5<414 1990 26 10913 https://doi.org/10.1007/BF02499558 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02499558 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Oparin V. aut NATIONALLICENCE 700 1- Morozov P. aut NATIONALLICENCE 700 1- Potyagailo L. aut NATIONALLICENCE 773 0- Soviet Mining Kluwer Academic Publishers-Plenum Publishers 26/5(1990-09-01), 414-418 0038-5581 26:5<414 1990 26 10913 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer