The solution of the inverse problem of lateral logging sounding in a terrigenous section

1Myrontsov, ML
1Institute of Telecommunications and Global Information Space of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2020, 4:15-24
https://doi.org/10.15407/dopovidi2020.04.015
Section: Information Science and Cybernetics
Language: Russian
Abstract: 

Using the example of lateral logging sounding, the possibility of assessing the influence of the adjacent beds and boundary effects on the real vertical resolution of the inverse problem is shown. It is shown how it is possible to improve this ability using a new approach to solving the inverse problem, which allows one to account for the quantitative contribution of the measurement of each probe to the final result. An example of such solution to the inverse problem of the “BKZ+BK” complex for a real well material in a terrigenous section is given. The following conclusions are made: for the correct use of the algorithm for solving the inverse problem, it is necessary to have an estimate of the vertical resolution of the electrometry method as a whole; a real assessment of the influence of boundary effects on the measurement of the apparent resistance of the probes of the complex allows us to evaluate the effectiveness of the method; the use of the proposed residual functional allows us to change the effect of probes of different lengths on the final result and thereby allows us to achieve a satisfactory accuracy even when studying the geoelectric parameters of formations whose power is less than the length of the largest probes of the electrometric complex. The results of the work were introduced into the production of a number of commercial geophysical organizations.

Keywords: electric logging, inverse electrometry problem, lateral logging, lateral logging sounding, numerical simulation, oil and gas well, vertical resolution, well logging
References: 

1. Trofymchuk, O. M. & Myrontsov, M. L. (2018). Modern dissertation researches of the Institute of Telecommunications and Global Information Space: Mathematical Modeling and Computational Methods. Matematychne modelyuvannya v ekonomitsi, 10, No. 1, pp. 7-30 (in Ukrainian).
2. Trofymchuk, O. M. & Myrontsov, M. L. (2018). Modern dissertation researches of the Institute of Telecommunications and Global Information Space: Information Technologies. Matematychne modelyuvannya v ekonomitsi, 11, No. 2, pp. 5-25 (in Ukrainian).
3. Trofymchuk, O. M. & Myrontsov, M. L. (2018) Modern dissertation researches of the Institute of Telecommunications and Global Information Space: Environmental safety. Matematychne modelyuvannya v ekonomitsi, 12, No. 3, pp. 7-25 (in Ukrainian).
4. Myrontsov, M. L. (2018). Vector of modern studies of electrometry of oil and gas wells. Matematychne modelyuvannya v ekonomitsi, 12, No.3, pp. 26-36 (in Ukrainian).
5. Dovgiy, S. O., Yevdoschuk, M. I., Korjnev, M. M., Kulish, Ye. O., Kurilo, M. M., Malakhov, I. M., Trofimchuk, O. M. & Yakovlev, Ye. O. (2010). Energy resource component of Ukraine’s development. Kyiv: Nika-Center (in Ukrainian).
6. Myrontsov, M. L. (2012). Numerical modeling of electrometry in wells. Kyiv: Naukova Dumka (in Russian).
7. Myrontsov, M. L. (2019). Eletrometry of oil and gas wells. Kyiv: “Publishing house Yuston” (in Ukrainian).
8. Myrontsov, M. L. (2012). Efficient investigation method for complex structures and anisotropic formations in clastic deposits. Dopov. Nac. akad nauk. Ukr., No. 5, pp. 119-125 (in Russian).
9. Myrontsov, M. L. (2012). Investigation method for “wrong” formations and the relict oil content under the well logging. Dopov. Nac. akad. nauk Ukr., No. 4, pp. 100-106 (in Russian).
10. Myrontsov, M. L. (2012). Hardware-methodical complex for the investigation of collectors with abnormally low resistance. Dopov. Nac. akad. nauk Ukr., No. 1, pp. 117-122 (in Russian).
11. Glinskyh, V. N. & Epov, M. I. (2006) Two-dimensional reconstruction of a geoelectric image according to high-frequency electromagnetic logging. Karotagnik, 147, No. 6, pp. 59-68 (in Russian).
12. Kneller, L. E. & Potapov, A. P. (2010) Determination of electrical resistivity of formations with radial and vertical heterogeneity of a well section. Geolohiya i geofizyka, No. 1, pp. 52-64 (in Russian).
13. Myrontsov, M. L. (2018). A criterion of reliability for a solution of the resistivity logging inverse problem. Dopov. Nac. akad. nauk Ukr., No. 5, pp. 16-21 (in Russian). Doi: https://doi.org/10.15407/dopovidi2018.05.016
14. Myrontsov, M. L. (2018). Features of a numerical solution of the inverse problem of induction logging in the contrast wells. Dopov. Nac. akad. nauk Ukr., No. 2, pp. 19-24 (in Russian). Doi: https://doi.org/10.15407/dopovidi2018.02.019
15. Myrontsov, M. L. (2018). Numerical solution of the inverse induction logging problem for thin-layered sections (“grouse”-type). Dopov. Nac. akad. nauk Ukr., No. 1, pp. 15-21 (in Russian). Doi: https://doi.org/10.15407/dopovidi2018.01.015