Introduction. Ensuring the seismic resistance of reservoirs for the oil and gas industry is an important task in ensuring the safe operation of enterprises where they are used. The main difficulty in performing calculations to determine the seismic resistance of such structures is to take into account the joint work of fuel and tank structures. There are various calculation methods to determine the seismic resistance of reservoirs. This article discusses the methods outlined in STO-SA-03-002-2009 and NP-031-01.

Aim. Comparison of the results of calculating the seismic resistance of reservoirs, taking into account hydrodynamic loads using various methods.

Materials and methods. Numerical modeling of the RVS-10000 reservoir for the oil and gas industry by the finite element method has been performed. The study was carried out taking into account the different reservoir occupancy rates, namely 100 % and 50 %, the influence of ground conditions was taken into account – thawing of the frozen base, the seismic load was determined using a linear spectral method and the multi-frequency nature of earthquakes.

Results and conclusions. The difference in the values of internal stresses has been established when calculating using different methods. During medium- and low-frequency seismic impacts, a significant increase in internal stresses in reservoir structures is observed. It is revealed that during thawing of the soil base, the values of internal stresses increase, especially during vertical seismic impacts. It has been found that with a lower filling capacity of the tank, internal stresses in the structures of the walls and roof are significantly reduced.

Today, in the world practice of earthquake-resistant construction, there is a fairly large amount of information about the destruction of reservoirs for storing oil and gas products. To protect such structures abroad, it is proposed to use special means of seismic protection, which make it possible to reduce the destruction of tank structures and preserve the fuel stored in them. However, on the territory of Russia, these methods of seismic protection have not yet become widespread. This report presents research on the application of seismic isolation of reservoirs for oil and gas products in seismically active regions.