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Book DOI: 10.21467/abstracts.93 swarm. The Oktyabrsky oil field is located 8 km South-East of the center of Grozny and is tectonically associated with the Oktyabrsky anticline, which belongs to the Sunzha anticline zone. The geological structure of the district includes a complex of rocks from Mesozoic to anthropogenic deposits. In the arch of the Oktyabrsky anticline, upper Sarmatian deposits are exposed. Intensive selection of liquid, oil and gas in the area of the Oktyabrsky field, as well as water injection, was accompanied by a series of earthquakes, timed mainly to the time of the maximum selections and the maximum water injection on the field development schedules (1960-2010). The most intense earthquakes were observed in 1972 (K=10.5), 1974 (K=9.2-11), when liquid and gas samples were approaching the maximum, and in 1982 (K=10), when the volume of water injected into the Deposit increased sharply with sharply reduced production. Thus, the analysis of the development of the upper Cretaceous Deposit allows us to establish a certain dependence of the seismicity of the subsoil on the intensity of technogenic impact on them by extracting fluid or pumping it. It is not possible to assess the impact of the intensity of the development of the Chokrak Deposit on the seismicity of the area, since there is no information about earthquakes during periods of forced fluid extraction. Gudermessky oil field is located in the Eastern part of the Terek ridge, 35 km East of Grozny. In orographic terms, it is represented by the Gudermes range, extending from West-Northwest to East-Southeast for 32 km, its width is 4-4.5 km. The field is located in a highly seismic zone. Earthquakes of various intensities have repeatedly occurred here. Here are the strongest technogenic earthquakes of 1950 and 1955 at the Gudermessky oil field – I Gudermes, March 31, H=19 km, M=4.2, Io=6-7 points; IIGudermes, November 9, H=19 km, hmacr=10-60 km, M=5.0, Iо=6 points; August 23, H=40 km, M=4.6, Io=5 points. The earthquake occurred on the background of a sharp increase in fluid selection when developing oil deposits in the sediments of Chokrak deposits in the Eastern Gudermes. The earthquake was accompanied by fore-and aftershocks and by the nature of the mechanism has been tectonic. Subsequently, more significant earthquakes occurred in this area, for example, Kurchaloy in 2008 with M=5.7 and an intensity of 7-8 points at the epicenter. The relationship between the time course of seismic activity and the dynamics of fluid extraction from the reservoir, as well as significant calculated rates of subsidence of the reservoir roof, indicate the intensive development of geodynamic processes. The relationship between seismicity and fault tectonics of oil fields can be established by analyzing structural maps of fields with earthquake epicenters, profile geological sections with earthquake hypocenters applied to them. Conclusions. The presence of interrelations between the processes of developing mineral deposits and seismicity indicates the need to create mining enterprises in the oil fields of the region, which, along with ensuring geodynamic security, will contribute to the effective solution of scientific and experimentalmethodological problems. The organization of geodynamic monitoring in the oil fields of the region will significantly reduce the cost of eliminating the consequences of emergency situations in the future due to their predictability. The assessment of the seismic hazard of the territory based on modern methods of detailed seismic zoning and seismic micro-zoning should be performed taking into account possible technogenic earthquakes and the influence of parameters of oil and gas fields development on the seismic regime of the area. Acknowledgements: This work was supported by Russian Foundation for Basic Research (RFBR), project number 18-45-200001 r_a.

Technogenic Seismicity on the Oil Fields of the Chechen Republic