The analysis of spatial-temporal organization of seismicity on the Romashkinskoye oil field (Tatarstan, Russia) was made. The object of analysis was the catalog of about 360 seismic events (0.1<M<4) being registered since 1986. It was found that the slope of magnitude-frequency relationship ship was the same as it is usual for induced seismicity. The analysis of temporal behavior of seismic regime was made in terms of two variables, they are "the activity of seismic process" and "the velocity of activity change". It was shown that the studied seismic process can be consider as Markov chain rather than Poisson' process. Abnormally great number of shocks close in time to each other is observed. The analysis of spatial distribution of such events was made. Correlation between seismic activity and extraction of fluids, injection of water and difference in volume between them was investigated.

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