This paper presents geodynamics of the Southern Cis-Urals region. It focuses on seismicity induced by hydrocarbon production by summarizing the published case studies. Natural and man-made changes in bowels of the Earth are usually accompanied by tectonic movements and deformations of earth's surface, which is one of the important factors determining environmental changes and requiring mandatory consideration in engineering-geological surveys and exploitation of deposits. The influence of anthropogenic factors on the geodynamic state of platform areas is considered by the example of Orenburg oil and gas condensate field and Baitugan oil field.

The article raises a problem of dangerous geodynamic processes taking place in the eastern part of Orenburg region. The analysis of subsoil geodynamic state of Orenburg region is completed. Effective monitoring of geodynamic processes in the eastern part of Orenburg region using a seismological network is proposed and justified. Seismic events with a magnitude of ML> 2.0 are confidently recorded on this territory as well as subsidence of land surface reaching 50 cm per year. According to long-term monitoring of seismic events in the eastern part of the Orenburg region, a repetition schedule of seismic events was constructed. It allowed us to make a conclusion of the reason for increased geodynamic activity in this region is high technogenic load on geological environment. To study abnormally high seismic activity in the East Orenburg region, it is necessary to create a seismological network of 3-4 seismic stations in the territory of seismic activity in the Gaysky and Novooorsky districts near the cities of Orsk and Gai, Iriklinskaya State District Power Station and Iriklinskoye Reservoir. This will help to identify seismic activity causes and sources, level of danger, help to develop measures for reducing seismicity and increase the security of specific objects of society, industry and energy.

In this paper is presented hydro-geodynamics and geodynamics in hydrocarbon fields by example of the Southern Cis-Urals. Seismicity and geodynamics induced by hydrocarbon production by summarizing the published case studies are considered. Changes in hydro-and gas dynamics affect changes in the geodynamics of the crust. Natural and technogenic changes in subsoil of the Earth Crust are usually entail deformations and tectonic movements of earth’s surface, which is one of the important factors determining environmental changes and requiring attention in geotechnical survey and field development. The method of classification of the geodynamic state of the developed hydrocarbon fields of the oil and gas basin refers to the field of analysis of geophysical processes, its field of application: identification of the geodynamic state of productive strata and developed hydrocarbon fields of the oil and gas basin, identification of dangerous geodynamic processes, selection of a rational mode development of hydrocarbon fields. The predominant field of application is the classification of geodynamic state of the developed hydrocarbon fields of the oil and gas basin.

In this paper is presented hydro-geodynamics and geodynamics in the South Urals. Seismicity and geodynamics induced by hydrocarbon production by summarizing the published case studies are considered. Changes in hydro-and gas dynamics affect changes in the geodynamics of the crust. Natural and technogenic changes in bowels of the Earth are usually entail tectonic movements and deformations of earth’s surface, which is one of the important factors determining environmental changes and requiring mandatory consideration in engineering-geological surveys and exploitation of deposits. The approach is based on identified changes in hydrogeodinamics, stress-deformation state and seismic activity in areas of mineral resources of oil and gas fields. Negative geodynamic processes occurring on the territory of the Eastern Orenburg Region are identified. The analysis of the geodynamic state of the subsurface of the Eastern Orenburg Region is carried out. Based on the analysis, conclusions are made about possible causes of the geodynamic processes. An effective method for observing geodynamic processes using a seismological network is proposed and justified. A method of organizing a geodynamic polygon on a mineral field under development using a network of seismic stations has been developed.