Probabilistic analysis of geological and structural Prospects for Oil and gas Potential in Western Yakutia Using three-Dimensional Empirical Mode Decomposition of Potential Fields

Further development of modern formal approaches to extracting geo-structural information from gravimetric and magnetometric data is herein discussed. A practical example of using 3D GEMD (three-dimensional controlled empirical mode decomposition) algorithm to calculate potential fields transforms associated with the impact of deep and medium (of different ranks) geological structures on the adjacent territories of Western Yakutia was considered. Two types of reference groups were determined based on analysis of the known hydrocarbon fields in the Lena-Vilyuy and Lena-Tunguska oil and gas provinces. Statistical efficiency of the observed fields, fields’ area transforms (modified functions of empirical decomposition), and also spatially-linked combinations of the said attributes, aiming to solve the forecasting tasks, was determined. As a result of integration within the testing area, layout diagrams of deep geological and structural prerequisites for oil and gas potential, similar to group standards, were drawn up. A geological interpretation of forecasting and geophysical constructions is presented. It is shown that a number of identified areas predicted with high probabilities correlate with depressions of rift zones. Combined with thick volcanogenic-sedimentary formations, the latter forms most prospective oil and gas content pre-requisites.

1. Astashkin V.A., Varlamov A.I., Gubina N.K. et al. (1984). Geology and prospects for oil and gas potential of Cambrian reef systems of the Siberian Platform. Ed. V.A. Astashkin. Moscow: Nedra, 181 p. (In Russ.)

2. Bugaets A.N., Dudenko L.N. (1976). Mathematical methods for forecasting mineral deposits. Moscow: Nedra, 270 p. (In Russ.)

3. Cheaney R.F. (1986). Statistical methods in geology. Moscow: Mir, 189 p. (In Russ.)

4. Davydov V.A., Davydov A.V. (2010). Control of empirical mode decomposition of signals in the analysis and processing of geophysical data. Karotazhnik, 5, pp. 98–114. (In Russ.)

5. Dmitriev V.I., Morozov V.A., Zhdanov M.S., Nikitin A.A., Brusentsov N.P. (1990). Computational Mathematics and Engineering in Exploration Geophysics: Geophysics Handbook.. Ed. V.I. Dmitriev. Moscow: Nedra, 498 p. (In Russ.)

6. Dolgal A.S., Khristenko L.A. (2017). Application of empirical mode decomposition in geophysical data processing. Bulletin of the Tomsk Polytechnic University. Geo Assets Engineering, 328(1), pp. 100–108. (In Russ.)

7. Dolgal A.S., Muravina O.M., Voroshilov V.A. (2019). Analysis of geophysical fields using the empirical mode decomposition (EMD) method. Geologiya i poleznye iskopaemye Zapadnogo Urala (Geology and minerals of the Western Urals), 2, pp. 212–222. (In Russ.)

8. Dolgal A.S., Voroshilov V.A. (2020). Adaptive algorithm for decomposing geophysical fields into components. Geologiya i poleznye iskopaemye Zapadnogo Urala (Geology and minerals of the Western Urals), 3, pp. 173–180. (In Russ.)

9. Goltsman F.M. (1982). Physical experiment and statistical conclusions: textbook. Leningrad, 191 p. (In Russ.)

10. Huang N. E., Shen Z., Long S. R., Wu M. C., Shih H. H., Zheng Q., Yen N.-C., Tung с. C., Liu H. H. (1998). The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis. Proceedings of the Royal Society of London. Series A. 454, pp. 903–995. https://doi.org/10.1098/rspa.1998.0193

11. Kalinin D.F. (2011). Information and statistical forecast of mineral resources. St.Petersburg: Geologorazvedka, 164 p. (In Russ.)

12. Kalinin D.F., Yanovskaya Yu.A., Dolgal A.S. (2021). Statistical methods for potential fields interpretation: studies of structural and tectonic architecture of oil and gas promising territories. Geologiya Nefti I Gaza (Russian Oil And Gas Geology), 2, pp. 27–36. (In Russ.) https://doi.org/10.31087/0016-7894-2021-2-27-36

13. Kleshchev K.A., Shein V.S. (2010). Oil and gas fields of Russia. Moscow: VNIGNI, 1554 p. (In Russ.)

14. Migursky A.V. (2017). Large remnant uplifts of the basement on the Nepa-Botuobinskaya anteclise (Siberian platform) and the oil and gas potential of the sedimentary cover above them. Proc. Int. Sci. Conf.: Subsoil use. Mining engineering. Directions and technologies for searching, exploration and development of mineral deposits. Interexpo Geo-Siberia. Novosibirsk: SGUGiT, vol.1. (In Russ.)

15. Oil and gas fields of the USSR. (1987). Handbook. Ed. S.P. Maksimov. Moscow: Nedra, 2, 303 p. (In Russ.)

16. Petrov A.V., Trusov A.N. (2000). Computer technology for statistical and spectral-correlation analysis of three-dimensional geoinformation “COSCAD3D”. Geofizika, (4), pp. 29–33. (In Russ.)

17. Pustozerov M.G. (2006). Elements of deep geological structure and their connection with minerals in the southwest of the Siberian Platform. Georesursy = Georesources, 1(18), pp. 37–39. (In Russ.)

18. Yarmolyuk V.V., Nikiforov A.V., Kozlovsky A.M., Kudryashova E.A. (2019). Late Mesozoic magmatic province of East Asia: structure, magmatism and formation conditions. Geotectonika (Geotectonics), 4, p. 60–77. (In Russ.) https://doi.org/10.31857/S0016-853X2019360-77